Tristán Suárez in Winter
In winter (June, July and August), Tristán Suárez sees average daytime highs around 15°C and overnight lows near 6°C, with 183 mm of rain over about 18 wet days across the season. It is the coldest season of the year and the driest season of the year.
Across winter, daytime highs hold fairly steady around 15°C. The sky is clear or mostly clear about 35% of the time across winter, and the air most often feels dry.
Winter is Tristán Suárez's weakest season of the year to visit on our travel score. For the whole year in context, see Tristán Suárez's year-round climate.
- Avg daytime high
- 15°C
- coldest season of the year
- Avg overnight low
- 6°C
- Rainfall
- 183 mm
- 18 wet days
- Avg wind
- 13 km/h
- Travel score
- 5.2
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Tristán Suárez in Winter
Across winter, daytime highs hold fairly steady around 15°C.
A typical winter day in Tristán Suárez reaches about 15°C and drops to 6°C overnight. The warmest of the three months is August, the coolest July.
Tristán Suárez weather by month
How the three winter months (June, July and August) 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 | 29° / 18° | 89 | 7.9 | 14.1 | 6.0 |
| Feb | 28° / 17° | 89 | 8.6 | 13.3 | 6.6 |
| Mar | 26° / 16° | 81 | 7.2 | 12.3 | 7.4 |
| Apr | 22° / 12° | 90 | 8.2 | 11.1 | 7.1 |
| May | 18° / 9° | 59 | 6.1 | 10.2 | 6.4 |
| Jun | 15° / 7° | 60 | 5.6 | 9.7 | 5.1 |
| Jul | 14° / 5° | 59 | 6.1 | 9.9 | 4.6 |
| Aug | 16° / 7° | 64 | 6 | 10.7 | 5.8 |
| Sep | 18° / 9° | 72 | 7 | 11.8 | 6.4 |
| Oct | 21° / 11° | 106 | 9.4 | 12.9 | 6.7 |
| Nov | 24° / 14° | 94 | 8.4 | 13.8 | 7.2 |
| Dec | 28° / 16° | 86 | 8.6 | 14.3 | 6.7 |
Cloud cover in Winter
The sky is clear or mostly clear about 35% of the time across winter.
Chance of precipitation in Winter
Tristán Suárez gets around 183 mm of rain over 18 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 13 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 9 h 48 min in early June to 11 h 12 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 2.7 kWh/m².
Is winter a good time to visit Tristán Suárez?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a reasonable time to visit Tristán Suárez for sightseeing.
What to pack for Tristán Suárez in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Tristán Suárez sees daytime highs around 15°C and nights near 6°C. Worth packing: a warm layer. About 18 days see rain.
Sea temperature near Tristán Suárez in Winter
The nearest coast averages about 13°C across winter — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 34 km away) is warmest in January at about 25°C and coldest in July near 13°C.
It's comfortable for a long swim from Nov 9 to Apr 20 — about 5.4 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 25 | 25 | 23 | 21 | 17 | 14 | 13 | 13 | 15 | 18 | 21 | 23 |
| Comfort | Warm | Warm | Refreshing | Refreshing | Cool | Bracing | Bracing | Bracing | Cool | Cool | Refreshing | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 25 | Warm |
| Feb | 25 | Warm |
| Mar | 23 | Refreshing |
| Apr | 21 | Refreshing |
| May | 17 | Cool |
| Jun | 14 | Bracing |
| Jul | 13 | Bracing |
| Aug | 13 | Bracing |
| Sep | 15 | Cool |
| Oct | 18 | Cool |
| Nov | 21 | Refreshing |
| Dec | 23 | Refreshing |
UV index in Tristán Suárez in Winter
Clear-sky midday UV across winter averages around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Tristán Suárez peaks around January 14 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 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 | 11 | 10 | 6 | 3 | 3 | 3 | 4 | 6 | 8 | 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 | 10 | Very high |
| Apr | 6 | High |
| May | 3 | Moderate |
| Jun | 3 | Moderate |
| Jul | 3 | Moderate |
| Aug | 4 | Moderate |
| Sep | 6 | High |
| Oct | 8 | Very high |
| Nov | 11 | Extreme |
| Dec | 12 | Extreme |
Air quality in Tristán Suárez in Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter falls, not just the annual average.
Air quality in Tristán Suárez is worst in August — around 17 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (December, 9 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) | 10 | 10 | 11 | 12 | 14 | 15 | 16 | 17 | 14 | 11 | 10 | 9 |
| Level | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 10 | Good |
| Feb | 10 | Good |
| Mar | 11 | Good |
| Apr | 12 | Good |
| May | 14 | Moderate |
| Jun | 15 | Moderate |
| Jul | 16 | Moderate |
| Aug | 17 | Moderate |
| Sep | 14 | Moderate |
| Oct | 11 | Good |
| Nov | 10 | Good |
| Dec | 9 | Good |
Where is Tristán Suárez?
Tristán Suárez sits at 34.9°S, 58.6°W, 12 m above sea level, in Argentina. The nearest listed city is La Unión, 3.0 km away.
Topography around Tristán Suárez
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Tristán Suárez.
Within 3 km, the terrain around Tristán Suárez has only modest variations in elevation — a maximum elevation change of 23 m around an average of 20 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 53 m; within 80 km, only modest variations in elevation — a maximum elevation change of 70 m.
The land around Tristán Suárez is covered by artificial surfaces (37%), grassland (36%) and trees (22%) within 3 km, grassland (45%) and artificial surfaces (20%) within 16 km, and grassland (35%) and cropland (29%) 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 Tristán Suárez (-34.8898°, -58.5676°, elevation 12 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.