San Antonio Oeste in Summer
In summer (December, January and February), San Antonio Oeste sees average daytime highs around 27°C and overnight lows near 17°C, with 57 mm of rain over about 10 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 27°C. The sky is clear or mostly clear about 65% of the time across summer, and the air most often feels dry.
Summer is San Antonio Oeste's best season of the year to visit on our travel score. For the whole year in context, see San Antonio Oeste's year-round climate.
- Avg daytime high
- 27°C
- warmest season of the year
- Avg overnight low
- 17°C
- Rainfall
- 57 mm
- 10 wet days
- Avg wind
- 19 km/h
- Travel score
- 8.1
- best season of the year
- Months
- Dec · Jan · Feb
Temperature in San Antonio Oeste in Summer
Across summer, daytime highs hold fairly steady around 27°C.
A typical summer day in San Antonio Oeste reaches about 27°C and drops to 17°C overnight. The warmest of the three months is January, the coolest December.
San Antonio Oeste 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 | 28° / 18° | 19 | 3.3 | 14.6 | 8.0 |
| Feb | 27° / 17° | 23 | 3.4 | 13.6 | 8.1 |
| Mar | 24° / 15° | 30 | 3.7 | 12.3 | 8.3 |
| Apr | 20° / 12° | 30 | 3.6 | 10.9 | 7.5 |
| May | 16° / 8° | 27 | 4.7 | 9.8 | 5.7 |
| Jun | 13° / 6° | 25 | 4.6 | 9.1 | 4.1 |
| Jul | 12° / 5° | 21 | 4 | 9.4 | 3.9 |
| Aug | 14° / 6° | 18 | 3.2 | 10.4 | 5.0 |
| Sep | 17° / 8° | 22 | 3.7 | 11.7 | 6.2 |
| Oct | 20° / 11° | 28 | 4.4 | 13.1 | 7.3 |
| Nov | 23° / 14° | 23 | 3.8 | 14.3 | 8.1 |
| Dec | 26° / 16° | 15 | 3 | 14.9 | 8.2 |
Cloud cover in Summer
The sky is clear or mostly clear about 65% of the time across summer.
Chance of precipitation in Summer
San Antonio Oeste gets around 57 mm of rain over 10 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 42 min in early December to 13 h 06 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 7.6 kWh/m².
Is summer a good time to visit San Antonio Oeste?
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 San Antonio Oeste for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for San Antonio Oeste in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, San Antonio Oeste sees daytime highs around 27°C and nights near 17°C. Pack light clothes and sun protection. About 10 days see rain.
Sea temperature near San Antonio Oeste in Summer
The nearest coast averages about 18°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 17 km away) is warmest in February at about 19°C and coldest in August near 11°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) | 19 | 19 | 18 | 16 | 15 | 13 | 12 | 11 | 11 | 13 | 15 | 17 |
| Comfort | Cool | Cool | Cool | Cool | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 19 | Cool |
| Feb | 19 | Cool |
| Mar | 18 | Cool |
| Apr | 16 | Cool |
| May | 15 | Bracing |
| Jun | 13 | Bracing |
| Jul | 12 | Bracing |
| Aug | 11 | Bracing |
| Sep | 11 | Bracing |
| Oct | 13 | Bracing |
| Nov | 15 | Bracing |
| Dec | 17 | Cool |
UV index in San Antonio Oeste in Summer
Clear-sky midday UV across summer averages around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in San Antonio Oeste peaks around December 20 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 2 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 11 | 11 | 7 | 5 | 3 | 2 | 2 | 3 | 4 | 7 | 9 | 12 |
| Level | Extreme | Extreme | Very high | Moderate | Moderate | Low | Low | Moderate | Moderate | High | Very high | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 11 | Extreme |
| Feb | 11 | Extreme |
| Mar | 7 | Very high |
| Apr | 5 | Moderate |
| May | 3 | Moderate |
| Jun | 2 | Low |
| Jul | 2 | Low |
| Aug | 3 | Moderate |
| Sep | 4 | Moderate |
| Oct | 7 | High |
| Nov | 9 | Very high |
| Dec | 12 | Extreme |
Where is San Antonio Oeste?
San Antonio Oeste sits at 40.7°S, 64.9°W, 12 m above sea level, in Argentina. The nearest listed city is Viedma, 164 km away.
Topography around San Antonio Oeste
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San Antonio Oeste.
Within 3 km, the terrain around San Antonio Oeste has only modest variations in elevation — a maximum elevation change of 26 m around an average of 5 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 162 m; within 80 km, significant variations in elevation — a maximum elevation change of 389 m.
The land around San Antonio Oeste is covered by shrubs (40%) and water (23%) within 3 km, shrubs (53%) and water (34%) within 16 km, and shrubs (73%) and water (21%) 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 San Antonio Oeste (-40.7319°, -64.9477°, 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.