Climate and average weather in Rengo
In Rengo, the summers are warm, dry, and clear and the winters are cool, snowy, and partly cloudy.
Over the course of the year, the temperature in Rengo typically varies from -0°C to 24°C, and is rarely below -6°C or above 27°C. January is the hottest month of the year, while July is the coldest.
Based on the travel score, the best time of year to visit Rengo for warm-weather activities is from late November to early April.
- Hottest
- Jan
- 24°
- Coldest
- Jul
- -0°
- Wettest
- Jun
- 209 mm
- Driest
- Jan
- 10 mm
- Rain / yr
- 896 mm
- 77 wet days
- Daylight
- 9.7–14.3 h
- shortest–longest
- Elevation
- 326 m
- 34.4°S
- Clearest
- Jan
- 15% cloud
Rengo is municipality in Chile.
- Air quality
- Elevated
- PM2.5 23.8 µg/m³ · 2019
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Rengo 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 late November to early April.
Temperature through the year
Daily average highs and lows in Rengo, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
The hot season lasts 4.2 months, from November 23 to March 29, with daily high temperatures above 21°C. The hottest month of the year in Rengo is January, with an average high of 24°C and low of 11°C.
The cool season lasts 3.2 months, from May 26 to August 30, with daily high temperatures below 13°C. The coldest month of the year in Rengo is July, with an average low of -0°C and high of 10°C.
Days typically run about 12°C warmer than nights, with the widest day–night swing (around 13°C) in November.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 24 | 24 | 22 | 18 | 15 | 11 | 10 | 12 | 14 | 17 | 20 | 23 |
| Avg low (°C) | 11 | 11 | 9 | 6 | 3 | 1 | 0 | 1 | 3 | 4 | 6 | 9 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 24 | 11 |
| Feb | 24 | 11 |
| Mar | 22 | 9 |
| Apr | 18 | 6 |
| May | 15 | 3 |
| Jun | 11 | 1 |
| Jul | 10 | 0 |
| Aug | 12 | 1 |
| Sep | 14 | 3 |
| Oct | 17 | 4 |
| Nov | 20 | 6 |
| Dec | 23 | 9 |
How hot and cold Rengo 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 -0°C (around July 19), with roughly 32 freezing days a year (feels-like at or below 0°C), worst in July.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels-like high (°C) | 24 | 24 | 22 | 18 | 14 | 11 | 10 | 12 | 14 | 17 | 20 | 22 |
| Air high (°C) | 24 | 24 | 22 | 18 | 15 | 11 | 10 | 12 | 14 | 17 | 20 | 23 |
| Feels-like low (°C) | 11 | 11 | 9 | 6 | 3 | 1 | 0 | 1 | 2 | 4 | 6 | 9 |
| Air low (°C) | 11 | 11 | 9 | 6 | 3 | 1 | 0 | 1 | 3 | 4 | 6 | 9 |
| Feels-like high (°C) | Air high (°C) | Feels-like low (°C) | Air low (°C) | |
|---|---|---|---|---|
| Jan | 24 | 24 | 11 | 11 |
| Feb | 24 | 24 | 11 | 11 |
| Mar | 22 | 22 | 9 | 9 |
| Apr | 18 | 18 | 6 | 6 |
| May | 14 | 15 | 3 | 3 |
| Jun | 11 | 11 | 1 | 1 |
| Jul | 10 | 10 | 0 | 0 |
| Aug | 12 | 12 | 1 | 1 |
| Sep | 14 | 14 | 2 | 3 |
| Oct | 17 | 17 | 4 | 4 |
| Nov | 20 | 20 | 6 | 6 |
| Dec | 22 | 23 | 9 | 9 |
Average hourly temperature in Rengo
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 January afternoons, near 24°C, and coldest before dawn in July, near -0°C.
Rengo 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 | 24° / 11° | 10 | 2.2 | 0 | 14 | 9.2 |
| Feb | 24° / 11° | 11 | 2.3 | 0 | 13.3 | 9.1 |
| Mar | 22° / 9° | 14 | 2.4 | 0 | 12.3 | 8.7 |
| Apr | 18° / 6° | 57 | 4.7 | 0.4 | 11.2 | 7.0 |
| May | 15° / 3° | 127 | 8 | 2.1 | 10.2 | 4.7 |
| Jun | 11° / 1° | 209 | 10.6 | 5.6 | 9.7 | 2.6 |
| Jul | 10° / -0° | 147 | 9.7 | 6 | 9.9 | 2.5 |
| Aug | 12° / 1° | 123 | 8.7 | 5.2 | 10.7 | 3.3 |
| Sep | 14° / 3° | 84 | 8.9 | 2.9 | 11.8 | 4.3 |
| Oct | 17° / 4° | 59 | 8.7 | 1.7 | 12.9 | 5.8 |
| Nov | 20° / 6° | 35 | 6.9 | 0.3 | 13.8 | 7.2 |
| Dec | 23° / 9° | 19 | 3.8 | 0.1 | 14.3 | 8.5 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
Rengo gets about 896 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 6.4 months, from around May 12 to Nov 21, peaking in June at about 38% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jan 30.
June is the wettest month by volume, with 209 mm over about 11 wet days; January is the driest, with 10 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 (%) | 7 | 8 | 8 | 16 | 25 | 36 | 31 | 29 | 30 | 28 | 23 | 12 |
| Rain days | 2 | 2 | 2 | 5 | 8 | 11 | 10 | 9 | 9 | 9 | 7 | 4 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 7 | 2 |
| Feb | 8 | 2 |
| Mar | 8 | 2 |
| Apr | 16 | 5 |
| May | 25 | 8 |
| Jun | 36 | 11 |
| Jul | 31 | 10 |
| Aug | 29 | 9 |
| Sep | 30 | 9 |
| Oct | 28 | 9 |
| Nov | 23 | 7 |
| Dec | 12 | 4 |
Monthly rainfall
Over a full year, Rengo collects about 896 mm of rain across 77 wet days — roughly 75 mm in an average month.
It doesn’t fall evenly. June is the wettest month with 209 mm, while January is the driest at just 10 mm. The three wettest months alone bring about 54% 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) | 10 | 11 | 14 | 57 | 127 | 209 | 147 | 123 | 84 | 59 | 35 | 19 |
| Rain days | 2 | 2 | 2 | 5 | 8 | 11 | 10 | 9 | 9 | 9 | 7 | 4 |
| Snow days | 0 | 0 | 0 | 0 | 2 | 6 | 6 | 5 | 3 | 2 | 0 | 0 |
| Rainfall (mm) | Rain days | Snow days | |
|---|---|---|---|
| Jan | 10 | 2 | 0 |
| Feb | 11 | 2 | 0 |
| Mar | 14 | 2 | 0 |
| Apr | 57 | 5 | 0 |
| May | 127 | 8 | 2 |
| Jun | 209 | 11 | 6 |
| Jul | 147 | 10 | 6 |
| Aug | 123 | 9 | 5 |
| Sep | 84 | 9 | 3 |
| Oct | 59 | 9 | 2 |
| Nov | 35 | 7 | 0 |
| Dec | 19 | 4 | 0 |
Snow in Rengo
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.
Rengo averages about 24 snowy days a year. Snow season runs roughly Apr 19 to Nov 2 — about 6.5 months.
June is snowiest, with roughly 6 days of snow and an estimated 50 cm of snowfall. Over the year that adds up to an estimated 163 cm of snow.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Snow days | 0 | 0 | 0 | 0 | 2 | 6 | 6 | 5 | 3 | 2 | 0 | 0 |
| Snowfall (cm) | 0 | 0 | 0 | 1 | 9 | 50 | 40 | 36 | 17 | 8 | 1 | 0 |
| Snow days | Snowfall (cm) | |
|---|---|---|
| Jan | 0 | 0 |
| Feb | 0 | 0 |
| Mar | 0 | 0 |
| Apr | 0 | 1 |
| May | 2 | 9 |
| Jun | 6 | 50 |
| Jul | 6 | 40 |
| Aug | 5 | 36 |
| Sep | 3 | 17 |
| Oct | 2 | 8 |
| Nov | 0 | 1 |
| Dec | 0 | 0 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In Rengo, 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 November 1 and lasts for 5.7 months, ending around April 22. The clearest month is February, when the sky is clear, mostly clear, or partly cloudy 93% of the time on average.
The cloudier part of the year begins around April 23 and lasts for 6.3 months, ending around October 31. The cloudiest month is June, when it is overcast or mostly cloudy 56% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 93 | 93 | 88 | 72 | 51 | 44 | 48 | 51 | 55 | 62 | 79 | 89 |
| Cloudier (%) | 7 | 7 | 12 | 28 | 49 | 56 | 52 | 49 | 45 | 38 | 21 | 11 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 93 | 7 |
| Feb | 93 | 7 |
| Mar | 88 | 12 |
| Apr | 72 | 28 |
| May | 51 | 49 |
| Jun | 44 | 56 |
| Jul | 48 | 52 |
| Aug | 51 | 49 |
| Sep | 55 | 45 |
| Oct | 62 | 38 |
| Nov | 79 | 21 |
| Dec | 89 | 11 |
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 January 1, brings about 14 h 18 min of light; the shortest, around June 11, only 9 h 42 min — a swing of roughly 4 h 36 min.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 14.0 | 13.3 | 12.3 | 11.2 | 10.2 | 9.7 | 9.9 | 10.7 | 11.8 | 12.9 | 13.8 | 14.3 |
| Sunrise (AM) | 6:51 | 7:20 | 7:45 | 8:09 | 8:33 | 8:52 | 8:52 | 8:26 | 7:44 | 7:02 | 6:34 | 6:31 |
| Sunset (PM) | 8:55 | 8:36 | 8:01 | 7:18 | 6:46 | 6:35 | 6:46 | 7:09 | 7:31 | 7:55 | 8:24 | 8:48 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 14.0 | 6:51 | 8:55 |
| Feb | 13.3 | 7:20 | 8:36 |
| Mar | 12.3 | 7:45 | 8:01 |
| Apr | 11.2 | 8:09 | 7:18 |
| May | 10.2 | 8:33 | 6:46 |
| Jun | 9.7 | 8:52 | 6:35 |
| Jul | 9.9 | 8:52 | 6:46 |
| Aug | 10.7 | 8:26 | 7:09 |
| Sep | 11.8 | 7:44 | 7:31 |
| Oct | 12.9 | 7:02 | 7:55 |
| Nov | 13.8 | 6:34 | 8:24 |
| Dec | 14.3 | 6:31 | 8:48 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
Rengo averages about 18 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 10 and 27 days.
The sunnier stretch runs 5.3 months, from around Nov 7 to Apr 17. The sunniest month is January, with roughly 26 sunny days (brilliant).
The greyest month is May, down near 12 sunny days — about 55% fewer than the January peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 27 | 24 | 25 | 18 | 12 | 10 | 12 | 12 | 13 | 15 | 20 | 24 |
| Sky | Brilliant | Brilliant | Brilliant | Bright | Mixed | Mixed | Mixed | Mixed | Mixed | Mixed | Bright | Brilliant |
| Sunny days | Sky | |
|---|---|---|
| Jan | 27 | Brilliant |
| Feb | 24 | Brilliant |
| Mar | 25 | Brilliant |
| Apr | 18 | Bright |
| May | 12 | Mixed |
| Jun | 10 | Mixed |
| Jul | 12 | Mixed |
| Aug | 12 | Mixed |
| Sep | 13 | Mixed |
| Oct | 15 | Mixed |
| Nov | 20 | Bright |
| Dec | 24 | Brilliant |
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 Rengo, the air stays dry or comfortable essentially all year. Even in January, the muggiest month, it feels humid or worse only about 0% of the time — humidity is not something you need to plan around here.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 92 | 94 | 99 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 98 |
| Comfortable (%) | 8 | 6 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| Dry (%) | Comfortable (%) | |
|---|---|---|
| Jan | 92 | 8 |
| Feb | 94 | 6 |
| Mar | 99 | 1 |
| 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 | 98 | 2 |
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 Rengo is steady company: average speeds sit near 4 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) | 5 | 5 | 4 | 4 | 4 | 5 | 4 | 4 | 4 | 4 | 5 | 5 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 5 | calm |
| Feb | 5 | calm |
| Mar | 4 | calm |
| Apr | 4 | calm |
| May | 4 | calm |
| Jun | 5 | calm |
| Jul | 4 | calm |
| Aug | 4 | calm |
| Sep | 4 | calm |
| Oct | 4 | calm |
| Nov | 5 | calm |
| Dec | 5 | calm |
Hazard calendar for Rengo
When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.
Rengo's rainy season runs May–August, when most of the year's rain falls.
Best time to visit Rengo
To characterize how pleasant the weather is in Rengo throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around late March, Rengo 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 Rengo for general outdoor tourist activities is from late November to early April, with a peak score in the last 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) | 9.2 | 9.1 | 8.6 | 7.0 | 4.7 | 2.6 | 2.5 | 3.3 | 4.4 | 5.8 | 7.2 | 8.5 |
| Rating | ideal | ideal | ideal | good | fair | poor | poor | poor | fair | good | good | ideal |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 9.2 | ideal |
| Feb | 9.1 | ideal |
| Mar | 8.6 | ideal |
| Apr | 7.0 | good |
| May | 4.7 | fair |
| Jun | 2.6 | poor |
| Jul | 2.5 | poor |
| Aug | 3.3 | poor |
| Sep | 4.4 | fair |
| Oct | 5.8 | good |
| Nov | 7.2 | good |
| Dec | 8.5 | 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 Rengo for hot-weather activities is from mid December to mid March, with a peak score in the last week of January.
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 Rengo, 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 January (highs near 24°C), the essentials are light clothes and sun protection. In the cold season around July (highs near 10°C), pack a warm layer and rain gear.
In January, Rengo sees daytime highs around 24°C and nights near 11°C. Pack sun protection. Worth having: light clothes.
UV index (midday) in Rengo 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 Rengo peaks around January 17 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near May 24 at about 3 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 13 | 13 | 10 | 5 | 3 | 3 | 3 | 3 | 6 | 9 | 11 | 12 |
| Level | Extreme | Extreme | Very high | High | Moderate | Moderate | Moderate | Moderate | High | Very high | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 13 | Extreme |
| Mar | 10 | Very high |
| Apr | 5 | High |
| May | 3 | Moderate |
| Jun | 3 | Moderate |
| Jul | 3 | Moderate |
| Aug | 3 | Moderate |
| Sep | 6 | High |
| Oct | 9 | Very high |
| Nov | 11 | Extreme |
| Dec | 12 | Extreme |
Average hourly UV index in Rengo
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 January the burn window is concentrated in the middle of the day: about 9 hours a day reach index 3 (protection recommended), and 7 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) | 9 | 8.5 | 7.5 | 5 | 0 | 0 | 1.5 | 2.5 | 5.5 | 7.5 | 8.5 | 9 |
| UV ≥ 6 (h/day) | 7 | 6.5 | 5 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | 6 | 7 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 9 | 7 |
| Feb | 8.5 | 6.5 |
| Mar | 7.5 | 5 |
| Apr | 5 | 0 |
| May | 0 | 0 |
| Jun | 0 | 0 |
| Jul | 1.5 | 0 |
| Aug | 2.5 | 0 |
| Sep | 5.5 | 1 |
| Oct | 7.5 | 5 |
| Nov | 8.5 | 6 |
| Dec | 9 | 7 |
Air quality in Rengo 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 Rengo is worst in July — around 32 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (December, 16 µg/m³).
Seasonal pattern from CAMS reanalysis, scaled to Rengo's WHO annual average of 23.8 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 20 | 17 | 17 | 23 | 31 | 31 | 32 | 31 | 29 | 22 | 17 | 16 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 20 | Moderate |
| Feb | 17 | Moderate |
| Mar | 17 | Moderate |
| Apr | 23 | Moderate |
| May | 31 | Moderate |
| Jun | 31 | Moderate |
| Jul | 32 | Moderate |
| Aug | 31 | Moderate |
| Sep | 29 | Moderate |
| Oct | 22 | Moderate |
| Nov | 17 | Moderate |
| Dec | 16 | Moderate |
Growing season
The growing season in Rengo typically lasts about 336 days, from around August 6 to July 7 — the span where a frost-free day is more likely than not. It is reliably frost-free from October 9 to May 1.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Frost-free chance (%) | 100 | 100 | 100 | 96 | 80 | 59 | 48 | 59 | 77 | 93 | 99 | 100 |
| Frost nights | 0 | 0 | 0 | 0 | 31 | 30 | 31 | 31 | 30 | 11 | 0 | 0 |
| Frost-free chance (%) | Frost nights | |
|---|---|---|
| Jan | 100 | 0 |
| Feb | 100 | 0 |
| Mar | 100 | 0 |
| Apr | 96 | 0 |
| May | 80 | 31 |
| Jun | 59 | 30 |
| Jul | 48 | 31 |
| Aug | 59 | 31 |
| Sep | 77 | 30 |
| Oct | 93 | 11 |
| Nov | 99 | 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. Rengo banks about 964 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around January.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Growing degree days (°C·days) | 239 | 202 | 169 | 57 | 1 | 0 | 0 | 0 | 0 | 21 | 96 | 180 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 239 |
| Feb | 202 |
| Mar | 169 |
| Apr | 57 |
| May | 1 |
| Jun | 0 |
| Jul | 0 |
| Aug | 0 |
| Sep | 0 |
| Oct | 21 |
| Nov | 96 |
| Dec | 180 |
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.
Rengo receives about 5.5 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 2.2 and 9.0 kWh/m².
The brighter stretch of the year lasts 6.0 months, from around Sep 29 to Mar 29. The brightest month is January, averaging about 8.8 kWh/m² (intense).
The dimmest month is June, down near 2.2 kWh/m² — roughly 75% less than the January peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 8.8 | 7.8 | 6.4 | 4.4 | 2.8 | 2.2 | 2.6 | 3.5 | 4.8 | 6.4 | 7.9 | 8.8 |
| Level | Intense | Intense | Intense | Bright | Moderate | Moderate | Moderate | Moderate | Bright | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 8.8 | Intense |
| Feb | 7.8 | Intense |
| Mar | 6.4 | Intense |
| Apr | 4.4 | Bright |
| May | 2.8 | Moderate |
| Jun | 2.2 | Moderate |
| Jul | 2.6 | Moderate |
| Aug | 3.5 | Moderate |
| Sep | 4.8 | Bright |
| Oct | 6.4 | Intense |
| Nov | 7.9 | Intense |
| Dec | 8.8 | Intense |
Where is Rengo?
Rengo sits at 34.4°S, 70.9°W, 326 m above sea level, in Chile. The nearest listed city is San Vicente de Tagua Tagua, 20 km away.
Topography around Rengo
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Rengo.
Within 3 km, the terrain around Rengo has only modest variations in elevation — a maximum elevation change of 96 m around an average of 320 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,632 m; within 80 km, extreme variations in elevation — a maximum elevation change of 5,128 m.
The land around Rengo is covered by cropland (41%), trees (24%) and artificial surfaces (22%) within 3 km, cropland (34%), trees (28%) and shrubs (23%) within 16 km, and trees (23%), bare terrain (22%) and grassland (20%) within 80 km.
Chile travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / F / L
- 220 V · 50 Hz
- Prices
- ≈ 48% of US
- price level, 2025
- GDP per capita
- $17,995
- 2025
- Happiness
- 6.3 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 6.3
- per 100k, 2023
- Road deaths
- 14.9
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Moderate
- EF EPI 517
- 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 Rengo (-34.4064°, -70.8583°, elevation 326 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).