Climate and average weather in Acatlán de Osorio
In Acatlán de Osorio, the weather is hot, wet, and mostly clear and remarkably steady, with daytime highs holding near hot levels all year. The wettest stretch peaks around September.
Over the course of the year, the temperature in Acatlán de Osorio typically varies from 12°C to 33°C, and is rarely below 9°C or above 35°C. April is the hottest month of the year, while January is the coldest.
Based on the travel score, the best time of year to visit Acatlán de Osorio for warm-weather activities is from mid November to late February.
- Hottest
- Apr
- 33°
- Coldest
- Jan
- 12°
- Wettest
- Sep
- 168 mm
- Driest
- Dec
- 3 mm
- Rain / yr
- 686 mm
- 84 wet days
- Daylight
- 10.9–13.1 h
- shortest–longest
- Elevation
- 1,185 m
- 18.2°N
- Clearest
- Feb
- 22% cloud
Acatlán de Osorio is municipal seat of Acatlán, State of Puebla, Mexico.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Acatlán de Osorio 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 November to late February.
Temperature through the year
Daily average highs and lows in Acatlán de Osorio, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
Temperatures in Acatlán de Osorio stay fairly even through the year, without a distinct hot or cool season. The warmest month is April, with an average high of 33°C and low of 17°C; the coolest is January, with an average low of 12°C and high of 27°C.
Days typically run about 14°C warmer than nights, with the widest day–night swing (around 16°C) in March.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 27 | 29 | 31 | 33 | 32 | 30 | 30 | 30 | 28 | 29 | 29 | 27 |
| Avg low (°C) | 12 | 13 | 15 | 17 | 18 | 18 | 17 | 17 | 17 | 16 | 14 | 12 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 27 | 12 |
| Feb | 29 | 13 |
| Mar | 31 | 15 |
| Apr | 33 | 17 |
| May | 32 | 18 |
| Jun | 30 | 18 |
| Jul | 30 | 17 |
| Aug | 30 | 17 |
| Sep | 28 | 17 |
| Oct | 29 | 16 |
| Nov | 29 | 14 |
| Dec | 27 | 12 |
How hot and cold Acatlán de Osorio 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 hottest afternoons, once humidity is folded in, Acatlán de Osorio feels like about 33°C (around April 28). About 55 days a year carry some heat stress, peaking in April.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels-like high (°C) | 27 | 29 | 31 | 33 | 32 | 30 | 30 | 30 | 28 | 29 | 29 | 27 |
| Air high (°C) | 27 | 29 | 31 | 33 | 32 | 30 | 30 | 30 | 28 | 29 | 29 | 27 |
| Feels-like low (°C) | 12 | 13 | 14 | 17 | 18 | 18 | 17 | 17 | 17 | 16 | 14 | 12 |
| Air low (°C) | 12 | 13 | 15 | 17 | 18 | 18 | 17 | 17 | 17 | 16 | 14 | 12 |
| Feels-like high (°C) | Air high (°C) | Feels-like low (°C) | Air low (°C) | |
|---|---|---|---|---|
| Jan | 27 | 27 | 12 | 12 |
| Feb | 29 | 29 | 13 | 13 |
| Mar | 31 | 31 | 14 | 15 |
| Apr | 33 | 33 | 17 | 17 |
| May | 32 | 32 | 18 | 18 |
| Jun | 30 | 30 | 18 | 18 |
| Jul | 30 | 30 | 17 | 17 |
| Aug | 30 | 30 | 17 | 17 |
| Sep | 28 | 28 | 17 | 17 |
| Oct | 29 | 29 | 16 | 16 |
| Nov | 29 | 29 | 14 | 14 |
| Dec | 27 | 27 | 12 | 12 |
Average hourly temperature in Acatlán de Osorio
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 April afternoons, near 33°C, and coldest before dawn in January, near 12°C.
Acatlán de Osorio weather by month
Every month at a glance. Click a month for its detailed page.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 27° / 12° | 4 | 0.8 | 11 | 8.5 |
| Feb | 29° / 13° | 3 | 0.6 | 11.4 | 7.5 |
| Mar | 31° / 15° | 4 | 1 | 11.9 | 6.0 |
| Apr | 33° / 17° | 10 | 2.4 | 12.4 | 4.6 |
| May | 32° / 18° | 43 | 8.2 | 12.8 | 4.0 |
| Jun | 30° / 18° | 144 | 15.9 | 13.1 | 4.2 |
| Jul | 30° / 17° | 103 | 12.1 | 13 | 4.7 |
| Aug | 30° / 17° | 135 | 14.9 | 12.6 | 4.3 |
| Sep | 28° / 17° | 168 | 17 | 12.1 | 4.7 |
| Oct | 29° / 16° | 59 | 8.6 | 11.6 | 5.8 |
| Nov | 29° / 14° | 9 | 1.9 | 11.1 | 7.1 |
| Dec | 27° / 12° | 3 | 0.3 | 10.9 | 8.4 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
Acatlán de Osorio gets about 686 mm of precipitation a year. On a typical day the chance of rain is some rain, but that rises and falls sharply with the seasons.
The wetter season lasts 5.3 months, from around May 12 to Oct 19, peaking in September at about 59% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Dec 8.
September is the wettest month by volume, with 168 mm over about 17 wet days; December is the driest, with 3 mm.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 2 | 2 | 3 | 9 | 27 | 51 | 40 | 48 | 55 | 28 | 7 | 1 |
| Rain days | 1 | 1 | 1 | 2 | 8 | 16 | 12 | 15 | 17 | 9 | 2 | 0 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 2 | 1 |
| Feb | 2 | 1 |
| Mar | 3 | 1 |
| Apr | 9 | 2 |
| May | 27 | 8 |
| Jun | 51 | 16 |
| Jul | 40 | 12 |
| Aug | 48 | 15 |
| Sep | 55 | 17 |
| Oct | 28 | 9 |
| Nov | 7 | 2 |
| Dec | 1 | 0 |
Monthly rainfall
Over a full year, Acatlán de Osorio collects about 686 mm of rain across 84 wet days — roughly 57 mm in an average month.
It doesn’t fall evenly. September is the wettest month with 168 mm, while December is the driest at just 3 mm. The three wettest months alone bring about 65% of the year’s total.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (mm) | 4 | 3 | 4 | 10 | 43 | 144 | 103 | 135 | 168 | 59 | 9 | 3 |
| Rain days | 1 | 1 | 1 | 2 | 8 | 16 | 12 | 15 | 17 | 9 | 2 | 0 |
| Rainfall (mm) | Rain days | |
|---|---|---|
| Jan | 4 | 1 |
| Feb | 3 | 1 |
| Mar | 4 | 1 |
| Apr | 10 | 2 |
| May | 43 | 8 |
| Jun | 144 | 16 |
| Jul | 103 | 12 |
| Aug | 135 | 15 |
| Sep | 168 | 17 |
| Oct | 59 | 9 |
| Nov | 9 | 2 |
| Dec | 3 | 0 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In Acatlán de Osorio, 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 October 25 and lasts for 6.9 months, ending around May 22. The clearest month is March, when the sky is clear, mostly clear, or partly cloudy 87% of the time on average.
The cloudier part of the year begins around May 23 and lasts for 5.1 months, ending around October 24. The cloudiest month is September, when it is overcast or mostly cloudy 69% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 82 | 87 | 87 | 81 | 67 | 40 | 43 | 39 | 31 | 55 | 78 | 83 |
| Cloudier (%) | 18 | 13 | 13 | 19 | 33 | 60 | 57 | 61 | 69 | 45 | 22 | 17 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 82 | 18 |
| Feb | 87 | 13 |
| Mar | 87 | 13 |
| Apr | 81 | 19 |
| May | 67 | 33 |
| Jun | 40 | 60 |
| Jul | 43 | 57 |
| Aug | 39 | 61 |
| Sep | 31 | 69 |
| Oct | 55 | 45 |
| Nov | 78 | 22 |
| Dec | 83 | 17 |
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 8, brings about 13 h 06 min of light; the shortest, around January 1, only 10 h 54 min — a swing of roughly 2 h 12 min.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 11.0 | 11.4 | 11.9 | 12.4 | 12.8 | 13.1 | 13.0 | 12.6 | 12.1 | 11.6 | 11.1 | 10.9 |
| Sunrise (AM) | 7:11 | 7:05 | 6:46 | 6:20 | 6:03 | 6:00 | 6:08 | 6:18 | 6:23 | 6:30 | 6:44 | 7:01 |
| Sunset (PM) | 6:12 | 6:28 | 6:38 | 6:45 | 6:54 | 7:05 | 7:08 | 6:55 | 6:30 | 6:05 | 5:51 | 5:56 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 11.0 | 7:11 | 6:12 |
| Feb | 11.4 | 7:05 | 6:28 |
| Mar | 11.9 | 6:46 | 6:38 |
| Apr | 12.4 | 6:20 | 6:45 |
| May | 12.8 | 6:03 | 6:54 |
| Jun | 13.1 | 6:00 | 7:05 |
| Jul | 13.0 | 6:08 | 7:08 |
| Aug | 12.6 | 6:18 | 6:55 |
| Sep | 12.1 | 6:23 | 6:30 |
| Oct | 11.6 | 6:30 | 6:05 |
| Nov | 11.1 | 6:44 | 5:51 |
| Dec | 10.9 | 7:01 | 5:56 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
Acatlán de Osorio averages about 15 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 4 and 25 days.
The sunnier stretch runs 6.1 months, from around Oct 31 to May 5. The sunniest month is February, with roughly 24 sunny days (brilliant).
The greyest month is September, down near 5 sunny days — about 80% fewer than the February peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 22 | 22 | 24 | 19 | 13 | 7 | 7 | 6 | 5 | 11 | 19 | 22 |
| Sky | Bright | Brilliant | Brilliant | Bright | Mixed | Gloomy | Gloomy | Gloomy | Gloomy | Mixed | Bright | Bright |
| Sunny days | Sky | |
|---|---|---|
| Jan | 22 | Bright |
| Feb | 22 | Brilliant |
| Mar | 24 | Brilliant |
| Apr | 19 | Bright |
| May | 13 | Mixed |
| Jun | 7 | Gloomy |
| Jul | 7 | Gloomy |
| Aug | 6 | Gloomy |
| Sep | 5 | Gloomy |
| Oct | 11 | Mixed |
| Nov | 19 | Bright |
| Dec | 22 | Bright |
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 Acatlán de Osorio, how humid it feels changes dramatically over the year.
The more humid part of the year lasts 4.9 months, from around May 23 to October 19. The muggiest month is September, when the air feels humid, muggy or worse about 44% of the time.
The most comfortable stretch runs from around October 20 to May 22, and April is the most comfortable month — the air is dry or comfortable 99% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 100 | 100 | 98 | 88 | 54 | 22 | 41 | 37 | 14 | 42 | 85 | 99 |
| Comfortable (%) | 0 | 0 | 2 | 12 | 34 | 40 | 35 | 32 | 43 | 38 | 13 | 1 |
| Humid (%) | 0 | 0 | 0 | 1 | 11 | 37 | 24 | 30 | 42 | 19 | 1 | 0 |
| Muggy (%) | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 2 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| Jan | 100 | 0 | 0 | 0 |
| Feb | 100 | 0 | 0 | 0 |
| Mar | 98 | 2 | 0 | 0 |
| Apr | 88 | 12 | 1 | 0 |
| May | 54 | 34 | 11 | 0 |
| Jun | 22 | 40 | 37 | 1 |
| Jul | 41 | 35 | 24 | 1 |
| Aug | 37 | 32 | 30 | 1 |
| Sep | 14 | 43 | 42 | 2 |
| Oct | 42 | 38 | 19 | 0 |
| Nov | 85 | 13 | 1 | 0 |
| Dec | 99 | 1 | 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.
Across the year, average wind speed in Acatlán de Osorio is typically calm, near 9 km/h, and varies little with the seasons.
The windier part of the year lasts 6.1 months, from around Oct 18 to Apr 21. The windiest month is November, averaging about 11 km/h (calm).
The calmer part of the year runs from around Apr 22 to Oct 17, with September the calmest month at about 7 km/h.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 11 | 10 | 10 | 9 | 8 | 7 | 9 | 8 | 7 | 9 | 11 | 11 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 11 | calm |
| Feb | 10 | calm |
| Mar | 10 | calm |
| Apr | 9 | calm |
| May | 8 | calm |
| Jun | 7 | calm |
| Jul | 9 | calm |
| Aug | 8 | calm |
| Sep | 7 | calm |
| Oct | 9 | calm |
| Nov | 11 | calm |
| Dec | 11 | calm |
Hazard calendar for Acatlán de Osorio
When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.
Acatlán de Osorio's rainy season runs June–September, when most of the year's rain falls.
Best time to visit Acatlán de Osorio
To characterize how pleasant the weather is in Acatlán de Osorio throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around mid February, Acatlán de Osorio is still near the tail of its best-weather window — great conditions with the peak-season crowds already thinning.
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 Acatlán de Osorio for general outdoor tourist activities is from mid November to late February, with a peak score in the second week of January.
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) | 8.5 | 7.5 | 6.0 | 4.6 | 4.1 | 4.3 | 4.7 | 4.3 | 4.7 | 5.8 | 7.1 | 8.4 |
| Rating | ideal | ideal | good | fair | fair | fair | fair | fair | fair | good | good | ideal |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 8.5 | ideal |
| Feb | 7.5 | ideal |
| Mar | 6.0 | good |
| Apr | 4.6 | fair |
| May | 4.1 | fair |
| Jun | 4.3 | fair |
| Jul | 4.7 | fair |
| Aug | 4.3 | fair |
| Sep | 4.7 | fair |
| Oct | 5.8 | good |
| Nov | 7.1 | good |
| Dec | 8.4 | ideal |
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 Acatlán de Osorio for hot-weather activities is from mid October to late April, with a peak score in the third week of February.
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 Acatlán de Osorio, 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.
Acatlán de Osorio packs about the same all year — highs hold near 33°C. Across the year the things worth having are light clothes and sun protection.
In April, Acatlán de Osorio sees daytime highs around 33°C and nights near 17°C. Pack light clothes and sun protection.
UV index (midday) in Acatlán de Osorio 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 Acatlán de Osorio peaks around April 11 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 8 (very high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 9 | 12 | 13 | 14 | 9 | 13 | 12 | 14 | 12 | 11 | 9 | 8 |
| Level | Very high | Extreme | Extreme | Extreme | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 9 | Very high |
| Feb | 12 | Extreme |
| Mar | 13 | Extreme |
| Apr | 14 | Extreme |
| May | 9 | Very high |
| Jun | 13 | Extreme |
| Jul | 12 | Extreme |
| Aug | 14 | Extreme |
| Sep | 12 | Extreme |
| Oct | 11 | Extreme |
| Nov | 9 | Very high |
| Dec | 8 | Very high |
Average hourly UV index in Acatlán de Osorio
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 April the burn window is concentrated in the middle of the day: about 8.5 hours a day reach index 3 (protection recommended), and 6.5 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) | 7 | 7.5 | 8 | 8.5 | 7.5 | 8.5 | 8.5 | 8.5 | 8 | 7.5 | 6.5 | 6.5 |
| UV ≥ 6 (h/day) | 4.5 | 5.5 | 6 | 6.5 | 5 | 6.5 | 6.5 | 6.5 | 6 | 5.5 | 4 | 3.5 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 7 | 4.5 |
| Feb | 7.5 | 5.5 |
| Mar | 8 | 6 |
| Apr | 8.5 | 6.5 |
| May | 7.5 | 5 |
| Jun | 8.5 | 6.5 |
| Jul | 8.5 | 6.5 |
| Aug | 8.5 | 6.5 |
| Sep | 8 | 6 |
| Oct | 7.5 | 5.5 |
| Nov | 6.5 | 4 |
| Dec | 6.5 | 3.5 |
Air quality in Acatlán de Osorio 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 Acatlán de Osorio is worst in May — around 29 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (February, 13 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 14 | 13 | 15 | 23 | 29 | 21 | 19 | 18 | 21 | 21 | 18 | 16 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 14 | Moderate |
| Feb | 13 | Moderate |
| Mar | 15 | Moderate |
| Apr | 23 | Moderate |
| May | 29 | Moderate |
| Jun | 21 | Moderate |
| Jul | 19 | Moderate |
| Aug | 18 | Moderate |
| Sep | 21 | Moderate |
| Oct | 21 | Moderate |
| Nov | 18 | Moderate |
| Dec | 16 | Moderate |
Growing season
Acatlán de Osorio is frost-free year round — even the coldest nights rarely reach freezing, so there is no start or end to the growing season.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Frost-free chance (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Frost nights | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Frost-free chance (%) | Frost nights | |
|---|---|---|
| Jan | 100 | 0 |
| Feb | 100 | 0 |
| Mar | 100 | 0 |
| Apr | 100 | 0 |
| May | 100 | 0 |
| Jun | 100 | 0 |
| Jul | 100 | 0 |
| Aug | 100 | 0 |
| Sep | 100 | 0 |
| Oct | 100 | 0 |
| Nov | 100 | 0 |
| Dec | 100 | 0 |
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. Acatlán de Osorio banks about 4,542 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around May.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Growing degree days (°C·days) | 286 | 300 | 393 | 440 | 471 | 416 | 415 | 422 | 382 | 382 | 335 | 301 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 286 |
| Feb | 300 |
| Mar | 393 |
| Apr | 440 |
| May | 471 |
| Jun | 416 |
| Jul | 415 |
| Aug | 422 |
| Sep | 382 |
| Oct | 382 |
| Nov | 335 |
| Dec | 301 |
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.
Acatlán de Osorio receives about 6.2 kWh/m² a day of solar energy on average — intense — with a clear seasonal swing between 5.2 and 7.4 kWh/m².
The brighter stretch of the year lasts 4.2 months, from around Feb 14 to Jun 21. The brightest month is April, averaging about 7.4 kWh/m² (intense).
The dimmest month is December, down near 5.2 kWh/m² — roughly 29% less than the April peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 5.4 | 6.2 | 7.0 | 7.4 | 7.0 | 6.2 | 6.6 | 6.3 | 5.6 | 5.6 | 5.4 | 5.2 |
| Level | Bright | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 5.4 | Bright |
| Feb | 6.2 | Intense |
| Mar | 7.0 | Intense |
| Apr | 7.4 | Intense |
| May | 7.0 | Intense |
| Jun | 6.2 | Intense |
| Jul | 6.6 | Intense |
| Aug | 6.3 | Intense |
| Sep | 5.6 | Bright |
| Oct | 5.6 | Bright |
| Nov | 5.4 | Bright |
| Dec | 5.2 | Bright |
Where is Acatlán de Osorio?
Acatlán de Osorio sits at 18.2°N, 98.0°W, 1,185 m above sea level, in Mexico. The nearest listed city is Ciudad de Huajuapan de León, 52 km away.
Topography around Acatlán de Osorio
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Acatlán de Osorio.
Within 3 km, the terrain around Acatlán de Osorio has only modest variations in elevation — a maximum elevation change of 237 m around an average of 1,217 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 890 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,306 m.
The land around Acatlán de Osorio is covered by shrubs (55%) within 3 km, shrubs (83%) within 16 km, and shrubs (64%) within 80 km.
Mexico travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type A / B
- 120 / 127 V · 60 Hz
- Prices
- ≈ 54% of US
- price level, 2025
- GDP per capita
- $13,889
- 2025
- Happiness
- 7.0 / 10
- World Happiness, 2025
- Safe drinking water
- 43%
- of population, 2024
- Homicide rate
- 24.9
- per 100k, 2023
- Road deaths
- 12.8
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Very low
- EF EPI 440
- 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 Acatlán de Osorio (18.2025°, -98.0486°, elevation 1,185 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).