Rengo in Summer
In summer (December, January and February), Rengo sees average daytime highs around 23°C and overnight lows near 10°C, with 40 mm of rain over about 8 wet days across the season. It is the warmest season of the year and the driest season of the year.
Across summer, daytime highs hold fairly steady around 23°C. The sky is clear or mostly clear about 83% of the time across summer, and the air most often feels dry.
Summer is Rengo's best season of the year to visit on our travel score. For the whole year in context, see Rengo's year-round climate.
- Avg daytime high
- 23°C
- warmest season of the year
- Avg overnight low
- 10°C
- Rainfall
- 40 mm
- 8 wet days
- Avg wind
- 5 km/h
- Travel score
- 8.9
- best season of the year
- Months
- Dec · Jan · Feb
Temperature in Rengo in Summer
Across summer, daytime highs hold fairly steady around 23°C.
A typical summer day in Rengo reaches about 23°C and drops to 10°C overnight. The warmest of the three months is January, the coolest December.
How summer really feels in Rengo
Once humidity and wind are folded in, summer brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
summer sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Rengo weather by month
How the three summer months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| 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 |
Cloud cover in Summer
The sky is clear or mostly clear about 83% of the time across summer.
Chance of precipitation in Summer
Rengo gets around 40 mm of rain over 8 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 5 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 06 min in early December to 12 h 48 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 8.5 kWh/m².
Hazard calendar for Rengo
None of Rengo's seasonal hazards peak in summer. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Rengo's rainy season runs May–August, when most of the year's rain falls.
Is summer a good time to visit Rengo?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is one of the better times to visit Rengo for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Rengo in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Rengo sees daytime highs around 23°C and nights near 10°C. Pack sun protection. Worth having: light clothes. About 8 days see rain.
UV index in Rengo in Summer
Clear-sky midday UV across summer averages around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
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 |
Air quality in Rengo in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual 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 |
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.