Constitución in Summer
In summer (December, January and February), Constitución sees average daytime highs around 18°C and overnight lows near 14°C, with 13 mm of rain over about 2 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 18°C. The sky is clear or mostly clear about 78% of the time across summer, and the air most often feels dry.
Summer is Constitución's best season of the year to visit on our travel score. Constitución has little temperature swing across the year, so its calendar seasons blur — the season framing matters less here than for a place with four distinct seasons. For the whole year in context, see Constitución's year-round climate.
- Avg daytime high
- 18°C
- warmest season of the year
- Avg overnight low
- 14°C
- Rainfall
- 13 mm
- 2 wet days
- Avg wind
- 19 km/h
- Travel score
- 7.7
- best season of the year
- Months
- Dec · Jan · Feb
Temperature in Constitución in Summer
Across summer, daytime highs hold fairly steady around 18°C.
A typical summer day in Constitución reaches about 18°C and drops to 14°C overnight. The warmest of the three months is January, the coolest December.
Constitución 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 | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 18° / 15° | 2 | 0.5 | 14.1 | 8.0 |
| Feb | 18° / 15° | 5 | 0.7 | 13.3 | 8.0 |
| Mar | 18° / 14° | 9 | 1.2 | 12.3 | 7.5 |
| Apr | 16° / 13° | 31 | 3.6 | 11.1 | 5.9 |
| May | 14° / 11° | 122 | 7.7 | 10.2 | 4.4 |
| Jun | 13° / 11° | 169 | 11 | 9.7 | 3.6 |
| Jul | 12° / 10° | 121 | 8.9 | 9.9 | 3.5 |
| Aug | 13° / 10° | 98 | 8.4 | 10.7 | 3.6 |
| Sep | 13° / 10° | 49 | 5.1 | 11.8 | 4.2 |
| Oct | 14° / 11° | 28 | 4.3 | 12.9 | 5.0 |
| Nov | 16° / 12° | 11 | 1.4 | 13.9 | 6.2 |
| Dec | 17° / 14° | 6 | 1 | 14.3 | 7.2 |
Cloud cover in Summer
The sky is clear or mostly clear about 78% of the time across summer.
Chance of precipitation in Summer
Constitución gets around 13 mm of rain over 2 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 19 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 12 min in early December to 12 h 54 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 8.3 kWh/m².
Hazard calendar for Constitución
None of Constitución's seasonal hazards peak in summer. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Constitución's rainy season runs May–August, when most of the year's rain falls.
Is summer a good time to visit Constitución?
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 Constitución for general sightseeing.
What to pack for Constitución in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Constitución sees daytime highs around 18°C and nights near 14°C. Pack sun protection. Worth having: a warm layer and a windbreaker.
Sea temperature near Constitución in Summer
The nearest coast averages about 15°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 20 km away) is warmest in February at about 15°C and coldest in August near 12°C.
The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 15 | 15 | 15 | 14 | 14 | 13 | 13 | 12 | 12 | 13 | 13 | 14 |
| Comfort | Bracing | Cool | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 15 | Bracing |
| Feb | 15 | Cool |
| Mar | 15 | Bracing |
| Apr | 14 | Bracing |
| May | 14 | Bracing |
| Jun | 13 | Bracing |
| Jul | 13 | Bracing |
| Aug | 12 | Bracing |
| Sep | 12 | Bracing |
| Oct | 13 | Bracing |
| Nov | 13 | Bracing |
| Dec | 14 | Bracing |
UV index in Constitución in Summer
Clear-sky midday UV across summer averages around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Constitución peaks around January 16 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 15 at about 2 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 13 | 11 | 9 | 5 | 3 | 2 | 3 | 4 | 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 | 11 | Extreme |
| Mar | 9 | Very high |
| Apr | 5 | High |
| May | 3 | Moderate |
| Jun | 2 | Moderate |
| Jul | 3 | Moderate |
| Aug | 4 | Moderate |
| Sep | 6 | High |
| Oct | 9 | Very high |
| Nov | 11 | Extreme |
| Dec | 12 | Extreme |
Where is Constitución?
Constitución sits at 35.3°S, 72.4°W, 19 m above sea level, in Chile. The nearest listed city is San Javier, 68 km away.
Topography around Constitución
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Constitución.
Within 3 km, the terrain around Constitución has significant variations in elevation — a maximum elevation change of 265 m around an average of 60 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 577 m; within 80 km, large variations in elevation — a maximum elevation change of 891 m.
The land around Constitución is covered by trees (35%) and water (34%) within 3 km, water (42%), trees (33%) and grassland (21%) within 16 km, and water (34%), trees (30%) and grassland (27%) 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 Constitución (-35.3332°, -72.4116°, elevation 19 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.