Ushuaia in Summer
In summer (December, January and February), Ushuaia sees average daytime highs around 11°C and overnight lows near 4°C, with 275 mm of precipitation over about 62 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 11°C. The sky is clear or mostly clear about 3% of the time across summer, and the air most often feels dry.
Summer is Ushuaia's best season of the year to visit on our travel score. For the whole year in context, see Ushuaia's year-round climate.
- Avg daytime high
- 11°C
- warmest season of the year
- Avg overnight low
- 4°C
- Precipitation
- 275 mm
- 62 wet days
- Avg wind
- 10 km/h
- Travel score
- 1.8
- best season of the year
- Months
- Dec · Jan · Feb
Temperature in Ushuaia in Summer
Across summer, daytime highs hold fairly steady around 11°C.
A typical summer day in Ushuaia reaches about 11°C and drops to 4°C overnight. The warmest of the three months is January, the coolest December.
How summer really feels in Ushuaia
Once humidity and wind are folded in, summer brings about 0 days that feel above 32°C and 10 that feel at or below 0°C.
The story in summer is cold — wind chill drags the overnight "feels like" below the raw low.
Ushuaia 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 | 11° / 4° | 100 | 22.4 | 1 | 16.4 | 1.9 |
| Feb | 11° / 4° | 76 | 17.6 | 1.3 | 14.7 | 2.0 |
| Mar | 9° / 3° | 79 | 16.8 | 3 | 12.6 | 1.5 |
| Apr | 6° / 1° | 66 | 15.2 | 6.9 | 10.3 | 0.5 |
| May | 3° / -2° | 57 | 12.5 | 8.7 | 8.2 | 0.0 |
| Jun | 0° / -4° | 50 | 12.1 | 12 | 7.1 | 0.0 |
| Jul | 0° / -5° | 49 | 12.2 | 12.4 | 7.5 | 0.0 |
| Aug | 2° / -4° | 50 | 12 | 12.3 | 9.3 | 0.0 |
| Sep | 4° / -3° | 48 | 12.5 | 10.7 | 11.5 | 0.0 |
| Oct | 6° / -1° | 56 | 14.7 | 8.3 | 13.8 | 0.5 |
| Nov | 9° / 1° | 76 | 18.7 | 5.6 | 15.9 | 1.3 |
| Dec | 10° / 3° | 99 | 21.8 | 2.9 | 16.9 | 1.6 |
Cloud cover in Summer
The sky is clear or mostly clear about 3% of the time across summer.
Chance of precipitation in Summer
Ushuaia gets around 275 mm of rain and snow over 62 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 10 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 16 h 36 min in early December to 13 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 5.2 kWh/m².
Is summer a good time to visit Ushuaia?
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 a weaker month for outdoor sightseeing in Ushuaia.
What to pack for Ushuaia in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Ushuaia sees daytime highs around 11°C and nights near 4°C. Pack a warm layer and rain gear. Worth having: sun protection. About 62 days see rain.
Sea temperature near Ushuaia in Summer
The nearest coast averages about 9°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 64 km away) is warmest in February at about 9°C and coldest in August near 6°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) | 9 | 9 | 9 | 8 | 8 | 7 | 6 | 6 | 6 | 6 | 7 | 8 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 9 | Bracing |
| Feb | 9 | Bracing |
| Mar | 9 | Bracing |
| Apr | 8 | Bracing |
| May | 8 | Bracing |
| Jun | 7 | Bracing |
| Jul | 6 | Bracing |
| Aug | 6 | Bracing |
| Sep | 6 | Bracing |
| Oct | 6 | Bracing |
| Nov | 7 | Bracing |
| Dec | 8 | Bracing |
UV index in Ushuaia in Summer
Clear-sky midday UV across summer averages around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Ushuaia peaks around January 14 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 0 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 9 | 7 | 3 | 2 | 1 | 0 | 1 | 1 | 2 | 4 | 6 | 8 |
| Level | Very high | High | Moderate | Low | Low | Low | Low | Low | Moderate | Moderate | High | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 9 | Very high |
| Feb | 7 | High |
| Mar | 3 | Moderate |
| Apr | 2 | Low |
| May | 1 | Low |
| Jun | 0 | Low |
| Jul | 1 | Low |
| Aug | 1 | Low |
| Sep | 2 | Moderate |
| Oct | 4 | Moderate |
| Nov | 6 | High |
| Dec | 8 | Very high |
Where is Ushuaia?
Ushuaia sits at 54.8°S, 68.3°W, 6 m above sea level, in Argentina. The nearest listed city is Río Grande, 120 km away.
Topography around Ushuaia
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Ushuaia.
Within 3 km, the terrain around Ushuaia has significant variations in elevation — a maximum elevation change of 422 m around an average of 92 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,443 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,279 m.
The land around Ushuaia is covered by trees (38%) and water (28%) within 3 km, water (34%) and trees (32%) within 16 km, and grassland (31%), trees (30%) and water (23%) within 80 km.
Argentina travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type C / I
- 220 V · 50 Hz
- Prices
- ≈ 46% of US
- price level, 2025
- GDP per capita
- $14,898
- 2025
- Happiness
- 6.4 / 10
- World Happiness, 2025
- Homicide rate
- 4.5
- per 100k, 2023
- Road deaths
- 14.1
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- High
- EF EPI 575
- 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 Ushuaia (-54.8108°, -68.3159°, elevation 6 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.