Climate and average weather in Annonay
In Annonay, the summers are warm, showery, and mostly clear and the winters are cold, snowy, and partly cloudy.
Over the course of the year, the temperature in Annonay typically varies from 0°C to 26°C, and is rarely below -5°C or above 32°C. July is the hottest month of the year, while January is the coldest.
Based on the travel score, the best time of year to visit Annonay for warm-weather activities is from mid May to late September.
- Hottest
- Jul
- 26°
- Coldest
- Jan
- 0°
- Wettest
- Oct
- 111 mm
- Driest
- Feb
- 54 mm
- Rain / yr
- 1003 mm
- 131 wet days
- Daylight
- 8.5–15.5 h
- shortest–longest
- Elevation
- 340 m
- 45.2°N
- Clearest
- Jul
- 46% cloud
Annonay weather by month, at a glance
The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.
Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around mid May to late September.
Temperature through the year
Daily average highs and lows in Annonay, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
The hot season lasts 3.4 months, from June 2 to September 13, with daily high temperatures above 22°C. The hottest month of the year in Annonay is July, with an average high of 26°C and low of 15°C.
The cool season lasts 3.6 months, from November 15 to March 3, with daily high temperatures below 10°C. The coldest month of the year in Annonay is January, with an average low of 0°C and high of 6°C.
Days typically run about 9°C warmer than nights, with the widest day–night swing (around 11°C) in July.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 6 | 8 | 12 | 15 | 19 | 24 | 26 | 26 | 21 | 16 | 10 | 7 |
| Avg low (°C) | 0 | 1 | 3 | 6 | 10 | 13 | 15 | 15 | 12 | 8 | 4 | 1 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 6 | 0 |
| Feb | 8 | 1 |
| Mar | 12 | 3 |
| Apr | 15 | 6 |
| May | 19 | 10 |
| Jun | 24 | 13 |
| Jul | 26 | 15 |
| Aug | 26 | 15 |
| Sep | 21 | 12 |
| Oct | 16 | 8 |
| Nov | 10 | 4 |
| Dec | 7 | 1 |
How hot and cold Annonay really feels
The felt-temperature range through the year — heat index on the day's high (summer humidity), wind chill on the night's low (winter wind). The dashed lines are the plain thermometer; the gap is how much hotter or colder it really feels.
On the coldest nights, wind chill pulls the feels-like down to about -4°C (around February 6), with roughly 111 freezing days a year (feels-like at or below 0°C), worst in February.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels-like high (°C) | 6 | 8 | 12 | 15 | 19 | 23 | 26 | 26 | 21 | 16 | 10 | 7 |
| Air high (°C) | 6 | 8 | 12 | 15 | 19 | 24 | 26 | 26 | 21 | 16 | 10 | 7 |
| Feels-like low (°C) | -3 | -3 | 0 | 3 | 8 | 13 | 15 | 15 | 11 | 6 | 1 | -2 |
| Air low (°C) | 0 | 1 | 3 | 6 | 10 | 13 | 15 | 15 | 12 | 8 | 4 | 1 |
| Feels-like high (°C) | Air high (°C) | Feels-like low (°C) | Air low (°C) | |
|---|---|---|---|---|
| Jan | 6 | 6 | -3 | 0 |
| Feb | 8 | 8 | -3 | 1 |
| Mar | 12 | 12 | 0 | 3 |
| Apr | 15 | 15 | 3 | 6 |
| May | 19 | 19 | 8 | 10 |
| Jun | 23 | 24 | 13 | 13 |
| Jul | 26 | 26 | 15 | 15 |
| Aug | 26 | 26 | 15 | 15 |
| Sep | 21 | 21 | 11 | 12 |
| Oct | 16 | 16 | 6 | 8 |
| Nov | 10 | 10 | 1 | 4 |
| Dec | 7 | 7 | -2 | 1 |
Average hourly temperature in Annonay
A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on July afternoons, near 26°C, and coldest before dawn in January, near 0°C.
Annonay weather by month
Every month at a glance. Click a month for its detailed page.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 6° / 0° | 69 | 11.2 | 3.5 | 9 | 0.5 |
| Feb | 8° / 1° | 54 | 9.4 | 2.9 | 10.1 | 1.2 |
| Mar | 12° / 3° | 61 | 10.8 | 1.5 | 11.6 | 3.2 |
| Apr | 15° / 6° | 89 | 11.9 | 0.9 | 13.2 | 4.5 |
| May | 19° / 10° | 94 | 12.5 | 0.2 | 14.6 | 5.8 |
| Jun | 24° / 13° | 80 | 11.3 | 0 | 15.4 | 6.7 |
| Jul | 26° / 15° | 86 | 9.9 | 0 | 15.1 | 6.9 |
| Aug | 26° / 15° | 80 | 9.8 | 0 | 13.9 | 7.0 |
| Sep | 21° / 12° | 103 | 9.5 | 0 | 12.3 | 6.6 |
| Oct | 16° / 8° | 111 | 11.1 | 0.2 | 10.7 | 4.8 |
| Nov | 10° / 4° | 108 | 12.3 | 1.6 | 9.3 | 2.2 |
| Dec | 7° / 1° | 69 | 11.1 | 2.5 | 8.6 | 0.8 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
Annonay gets about 1003 mm of precipitation a year. On a typical day the chance of rain is often wet, but that rises and falls sharply with the seasons.
The wetter season lasts 2.7 months, from around Mar 27 to Jun 17, peaking in May at about 46% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Aug 31.
October is the wettest month by volume, with 111 mm over about 11 wet days; February is the driest, with 54 mm. Some of the cold-season precipitation falls as snow.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 36 | 35 | 34 | 39 | 41 | 37 | 32 | 31 | 32 | 36 | 40 | 36 |
| Rain days | 11 | 9 | 11 | 12 | 13 | 11 | 10 | 10 | 10 | 11 | 12 | 11 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 36 | 11 |
| Feb | 35 | 9 |
| Mar | 34 | 11 |
| Apr | 39 | 12 |
| May | 41 | 13 |
| Jun | 37 | 11 |
| Jul | 32 | 10 |
| Aug | 31 | 10 |
| Sep | 32 | 10 |
| Oct | 36 | 11 |
| Nov | 40 | 12 |
| Dec | 36 | 11 |
Monthly rainfall
Over a full year, Annonay collects about 1003 mm of rain across 131 wet days — roughly 84 mm in an average month.
It doesn’t fall evenly. October is the wettest month with 111 mm, while February is the driest at just 54 mm. The three wettest months alone bring about 32% of the year’s total, and some of the cold-season precipitation falls as snow.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (mm) | 69 | 54 | 61 | 89 | 94 | 80 | 86 | 80 | 103 | 111 | 108 | 69 |
| Rain days | 11 | 9 | 11 | 12 | 13 | 11 | 10 | 10 | 10 | 11 | 12 | 11 |
| Snow days | 4 | 3 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 3 |
| Rainfall (mm) | Rain days | Snow days | |
|---|---|---|---|
| Jan | 69 | 11 | 4 |
| Feb | 54 | 9 | 3 |
| Mar | 61 | 11 | 2 |
| Apr | 89 | 12 | 1 |
| May | 94 | 13 | 0 |
| Jun | 80 | 11 | 0 |
| Jul | 86 | 10 | 0 |
| Aug | 80 | 10 | 0 |
| Sep | 103 | 10 | 0 |
| Oct | 111 | 11 | 0 |
| Nov | 108 | 12 | 2 |
| Dec | 69 | 11 | 3 |
Snow in Annonay
Average snowy days through the year, the snow-season span, and estimated snowfall — for ski trips and the perennial 'will there be snow at Christmas?' question.
Annonay averages about 13 snowy days a year. Snow season runs roughly Nov 3 to May 1 — about 5.9 months.
January is snowiest, with roughly 3 days of snow and an estimated 14 cm of snowfall. Over the year that adds up to an estimated 53 cm of snow.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Snow days | 4 | 3 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 3 |
| Snowfall (cm) | 14 | 10 | 4 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 9 |
| Snow days | Snowfall (cm) | |
|---|---|---|
| Jan | 4 | 14 |
| Feb | 3 | 10 |
| Mar | 2 | 4 |
| Apr | 1 | 5 |
| May | 0 | 0 |
| Jun | 0 | 0 |
| Jul | 0 | 0 |
| Aug | 0 | 0 |
| Sep | 0 | 0 |
| Oct | 0 | 0 |
| Nov | 2 | 11 |
| Dec | 3 | 9 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In Annonay, the average share of the sky covered by clouds shows significant seasonal variation over the course of the year.
The clearer part of the year begins around June 9 and lasts for 3.5 months, ending around September 23. The clearest month is July, when the sky is clear, mostly clear, or partly cloudy 67% of the time on average.
The cloudier part of the year begins around September 24 and lasts for 5.4 months, ending around March 7. The cloudiest month is November, when it is overcast or mostly cloudy 67% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 34 | 39 | 46 | 44 | 42 | 53 | 67 | 64 | 52 | 39 | 33 | 34 |
| Cloudier (%) | 66 | 61 | 54 | 56 | 58 | 47 | 33 | 36 | 48 | 61 | 67 | 66 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 34 | 66 |
| Feb | 39 | 61 |
| Mar | 46 | 54 |
| Apr | 44 | 56 |
| May | 42 | 58 |
| Jun | 53 | 47 |
| Jul | 67 | 33 |
| Aug | 64 | 36 |
| Sep | 52 | 48 |
| Oct | 39 | 61 |
| Nov | 33 | 67 |
| Dec | 34 | 66 |
Daylight, sunrise and sunset
Hours of daylight through the year, with sunrise and sunset times.
The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. The longest day, around June 20, brings about 15 h 30 min of light; the shortest, around December 19, only 8 h 30 min — a swing of roughly 7 hours.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 9.0 | 10.1 | 11.6 | 13.2 | 14.6 | 15.4 | 15.1 | 13.9 | 12.3 | 10.7 | 9.3 | 8.6 |
| Sunrise (AM) | 8:23 | 7:53 | 7:03 | 6:03 | 5:18 | 4:59 | 5:13 | 5:48 | 6:26 | 7:05 | 7:48 | 8:21 |
| Sunset (PM) | 5:18 | 5:59 | 6:39 | 7:20 | 7:58 | 8:24 | 8:21 | 7:43 | 6:45 | 5:47 | 5:05 | 4:54 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 9.0 | 8:23 | 5:18 |
| Feb | 10.1 | 7:53 | 5:59 |
| Mar | 11.6 | 7:03 | 6:39 |
| Apr | 13.2 | 6:03 | 7:20 |
| May | 14.6 | 5:18 | 7:58 |
| Jun | 15.4 | 4:59 | 8:24 |
| Jul | 15.1 | 5:13 | 8:21 |
| Aug | 13.9 | 5:48 | 7:43 |
| Sep | 12.3 | 6:26 | 6:45 |
| Oct | 10.7 | 7:05 | 5:47 |
| Nov | 9.3 | 7:48 | 5:05 |
| Dec | 8.6 | 8:21 | 4:54 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
Annonay averages about 8 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 5 and 14 days.
The sunnier stretch runs 3.5 months, from around Jun 13 to Sep 26. The sunniest month is July, with roughly 13 sunny days (mixed).
The greyest month is November, down near 5 sunny days — about 60% fewer than the July peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 6 | 7 | 9 | 8 | 8 | 9 | 13 | 13 | 10 | 7 | 5 | 5 |
| Sky | Gloomy | Gloomy | Mixed | Mixed | Gloomy | Mixed | Mixed | Mixed | Mixed | Gloomy | Gloomy | Gloomy |
| Sunny days | Sky | |
|---|---|---|
| Jan | 6 | Gloomy |
| Feb | 7 | Gloomy |
| Mar | 9 | Mixed |
| Apr | 8 | Mixed |
| May | 8 | Gloomy |
| Jun | 9 | Mixed |
| Jul | 13 | Mixed |
| Aug | 13 | Mixed |
| Sep | 10 | Mixed |
| Oct | 7 | Gloomy |
| Nov | 5 | Gloomy |
| Dec | 5 | Gloomy |
Humidity comfort
Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.
Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.
In Annonay, how humid it feels changes noticeably over the year.
The more humid part of the year lasts 3.3 months, from around June 8 to September 14. The muggiest month is August, when the air feels humid, muggy or worse about 20% of the time.
The most comfortable stretch runs from around September 15 to June 7, and April is the most comfortable month — the air is dry or comfortable 100% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 100 | 100 | 100 | 100 | 92 | 63 | 45 | 44 | 72 | 90 | 100 | 100 |
| Comfortable (%) | 0 | 0 | 0 | 0 | 8 | 28 | 35 | 36 | 23 | 10 | 0 | 0 |
| Humid (%) | 0 | 0 | 0 | 0 | 0 | 8 | 19 | 20 | 5 | 0 | 0 | 0 |
| Muggy (%) | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| Jan | 100 | 0 | 0 | 0 |
| Feb | 100 | 0 | 0 | 0 |
| Mar | 100 | 0 | 0 | 0 |
| Apr | 100 | 0 | 0 | 0 |
| May | 92 | 8 | 0 | 0 |
| Jun | 63 | 28 | 8 | 0 |
| Jul | 45 | 35 | 19 | 1 |
| Aug | 44 | 36 | 20 | 0 |
| Sep | 72 | 23 | 5 | 0 |
| Oct | 90 | 10 | 0 | 0 |
| Nov | 100 | 0 | 0 | 0 |
| Dec | 100 | 0 | 0 | 0 |
Wind
Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.
This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.
Wind in Annonay is steady company: average speeds sit near 11 km/h — calm — in every month of the year, with no meaningful windy or calm season.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 11 | 11 | 12 | 12 | 12 | 11 | 10 | 10 | 10 | 11 | 11 | 11 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 11 | calm |
| Feb | 11 | calm |
| Mar | 12 | calm |
| Apr | 12 | calm |
| May | 12 | calm |
| Jun | 11 | calm |
| Jul | 10 | calm |
| Aug | 10 | calm |
| Sep | 10 | calm |
| Oct | 11 | calm |
| Nov | 11 | calm |
| Dec | 11 | calm |
Best time to visit Annonay
To characterize how pleasant the weather is in Annonay throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around late May, Annonay is still near the start of its best-weather window — great conditions with the peak-season crowds not yet at full swing.
Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.
The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, the best time of year to visit Annonay for general outdoor tourist activities is from mid May to late September, with a peak score in the last week of August.
The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Travel score (0–10) | 0.6 | 1.3 | 3.2 | 4.5 | 5.7 | 6.7 | 7.0 | 7.0 | 6.6 | 4.8 | 2.2 | 0.8 |
| Rating | poor | poor | poor | fair | good | good | good | good | good | fair | poor | poor |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 0.6 | poor |
| Feb | 1.3 | poor |
| Mar | 3.2 | poor |
| Apr | 4.5 | fair |
| May | 5.7 | good |
| Jun | 6.7 | good |
| Jul | 7.0 | good |
| Aug | 7.0 | good |
| Sep | 6.6 | good |
| Oct | 4.8 | fair |
| Nov | 2.2 | poor |
| Dec | 0.8 | poor |
The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best time of year to visit Annonay for hot-weather activities is from mid June to early September, with a peak score in the last week of July.
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
What to pack for Annonay, by month
Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.
For a warm-season trip around July (highs near 26°C), the essentials are light clothes, rain gear and sun protection. In the cold season around January (highs near 6°C), pack a warm layer, a heavy coat and rain gear.
In July, Annonay sees daytime highs around 26°C and nights near 15°C. Pack sun protection. Worth having: light clothes and rain gear. About 10 days see rain.
UV index (midday) in Annonay by month
Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.
Under clear skies, the midday UV index in Annonay peaks around July 16 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 4 | 5 | 6 | 7 | 9 | 7 | 5 | 3 | 2 | 1 |
| Level | Low | Moderate | Moderate | Moderate | High | Very high | Very high | High | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Moderate |
| Mar | 4 | Moderate |
| Apr | 5 | Moderate |
| May | 6 | High |
| Jun | 7 | Very high |
| Jul | 9 | Very high |
| Aug | 7 | High |
| Sep | 5 | Moderate |
| Oct | 3 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Average hourly UV index in Annonay
Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.
The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
UV falls off far faster than brightness as the sun drops, so even in July the burn window is concentrated in the middle of the day: about 8.5 hours a day reach index 3 (protection recommended), and 5 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV ≥ 3 (h/day) | 0 | 0 | 4 | 5.5 | 7 | 8 | 8.5 | 7 | 5 | 2 | 0 | 0 |
| UV ≥ 6 (h/day) | 0 | 0 | 0 | 0 | 1.5 | 3.5 | 5 | 3 | 0 | 0 | 0 | 0 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 0 | 0 |
| Feb | 0 | 0 |
| Mar | 4 | 0 |
| Apr | 5.5 | 0 |
| May | 7 | 1.5 |
| Jun | 8 | 3.5 |
| Jul | 8.5 | 5 |
| Aug | 7 | 3 |
| Sep | 5 | 0 |
| Oct | 2 | 0 |
| Nov | 0 | 0 |
| Dec | 0 | 0 |
Air quality in Annonay by month
Average fine-particle pollution (PM2.5) through the year — so you can see which months the air is worst, not just the yearly average.
Air quality in Annonay is worst in March — around 16 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 13 | 14 | 16 | 15 | 13 | 15 | 11 | 11 | 12 | 12 | 11 | 12 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good | Good | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 13 | Moderate |
| Feb | 14 | Moderate |
| Mar | 16 | Moderate |
| Apr | 15 | Moderate |
| May | 13 | Moderate |
| Jun | 15 | Moderate |
| Jul | 11 | Good |
| Aug | 11 | Good |
| Sep | 12 | Good |
| Oct | 12 | Good |
| Nov | 11 | Good |
| Dec | 12 | Moderate |
Growing season
Annonay is mild enough that a frost-free day stays more likely than not even in midwinter. Nights are reliably above freezing from about March 29 to November 9 (226 days); outside that window a hard frost is an occasional risk.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Frost-free chance (%) | 54 | 56 | 82 | 96 | 100 | 100 | 100 | 100 | 100 | 98 | 84 | 63 |
| Frost nights | 31 | 28 | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 20 | 31 |
| Frost-free chance (%) | Frost nights | |
|---|---|---|
| Jan | 54 | 31 |
| Feb | 56 | 28 |
| Mar | 82 | 30 |
| Apr | 96 | 0 |
| May | 100 | 0 |
| Jun | 100 | 0 |
| Jul | 100 | 0 |
| Aug | 100 | 0 |
| Sep | 100 | 0 |
| Oct | 98 | 0 |
| Nov | 84 | 20 |
| Dec | 63 | 31 |
Growing degree days
Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. Annonay banks about 1,311 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around July.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Growing degree days (°C·days) | 0 | 0 | 0 | 23 | 138 | 249 | 328 | 317 | 189 | 68 | 0 | 0 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 0 |
| Feb | 0 |
| Mar | 0 |
| Apr | 23 |
| May | 138 |
| Jun | 249 |
| Jul | 328 |
| Aug | 317 |
| Sep | 189 |
| Oct | 68 |
| Nov | 0 |
| Dec | 0 |
Solar energy
Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.
Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.
Annonay receives about 3.8 kWh/m² a day of solar energy on average — moderate — with a clear seasonal swing between 1.2 and 6.5 kWh/m².
The brighter stretch of the year lasts 6.1 months, from around Mar 18 to Sep 19. The brightest month is June, averaging about 6.2 kWh/m² (intense).
The dimmest month is December, down near 1.2 kWh/m² — roughly 81% less than the June peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 1.4 | 2.3 | 3.7 | 4.9 | 5.6 | 6.2 | 6.3 | 5.5 | 4.0 | 2.6 | 1.6 | 1.2 |
| Level | Dim | Moderate | Moderate | Bright | Bright | Intense | Intense | Bright | Bright | Moderate | Dim | Dim |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 1.4 | Dim |
| Feb | 2.3 | Moderate |
| Mar | 3.7 | Moderate |
| Apr | 4.9 | Bright |
| May | 5.6 | Bright |
| Jun | 6.2 | Intense |
| Jul | 6.3 | Intense |
| Aug | 5.5 | Bright |
| Sep | 4.0 | Bright |
| Oct | 2.6 | Moderate |
| Nov | 1.6 | Dim |
| Dec | 1.2 | Dim |
Where is Annonay?
Annonay sits at 45.2°N, 4.7°E, 340 m above sea level, in France. The nearest listed city is Saint-Chamond, 29 km away.
Topography around Annonay
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Annonay.
Within 3 km, the terrain around Annonay has significant variations in elevation — a maximum elevation change of 424 m around an average of 414 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,277 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,234 m.
The land around Annonay is covered by trees (40%), grassland (32%) and artificial surfaces (22%) within 3 km, trees (52%) and grassland (31%) within 16 km, and trees (51%) and grassland (29%) within 80 km.
France travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / E
- 230 V · 50 Hz
- Prices
- ≈ 77% of US
- price level, 2025
- GDP per capita
- $48,986
- 2025
- Happiness
- 6.6 / 10
- World Happiness, 2025
- Safe drinking water
- 100%
- of population, 2024
- Homicide rate
- 1.3
- per 100k, 2023
- Road deaths
- 5.1
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Moderate
- EF EPI 539
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Annonay (45.2399°, 4.6707°, elevation 340 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).