San Martín in Fall
In fall (March, April and May), San Martín sees average daytime highs around 23°C and overnight lows near 12°C, with 75 mm of rain over about 13 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 30°C in early March to 17°C by late May. The sky is clear or mostly clear about 57% of the time across fall, and the air most often feels dry.
Fall is San Martín's 2nd-best season to visit on our travel score. For the whole year in context, see San Martín's year-round climate.
- Avg daytime high
- 23°C
- 3rd-warmest season
- Avg overnight low
- 12°C
- Rainfall
- 75 mm
- 13 wet days
- Avg wind
- 9 km/h
- Travel score
- 7.4
- 2nd-best season
- Months
- Mar · Apr · May
Temperature in San Martín in Fall
Over the season highs ease from about 30°C in early March to 17°C by late May.
A typical fall day in San Martín reaches about 23°C and drops to 12°C overnight. The warmest of the three months is March, the coolest May.
How fall really feels in San Martín
Once humidity and wind are folded in, fall brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
fall sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
San Martín weather by month
How the three fall months (March, April and May) 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 | 33° / 21° | 48 | 7.8 | 13.9 | 4.0 |
| Feb | 31° / 19° | 37 | 6.3 | 13.2 | 5.0 |
| Mar | 28° / 17° | 43 | 6.2 | 12.3 | 6.9 |
| Apr | 23° / 12° | 20 | 4.3 | 11.2 | 8.2 |
| May | 19° / 8° | 13 | 2.6 | 10.3 | 7.2 |
| Jun | 15° / 4° | 6 | 1.3 | 9.9 | 5.9 |
| Jul | 15° / 3° | 6 | 1.6 | 10 | 5.9 |
| Aug | 18° / 6° | 10 | 1.9 | 10.8 | 7.6 |
| Sep | 22° / 10° | 12 | 2.3 | 11.8 | 8.4 |
| Oct | 26° / 14° | 20 | 3.9 | 12.8 | 8.1 |
| Nov | 30° / 17° | 27 | 5.1 | 13.7 | 6.1 |
| Dec | 32° / 19° | 38 | 6.7 | 14.1 | 4.4 |
Cloud cover in Fall
The sky is clear or mostly clear about 57% of the time across fall.
Chance of precipitation in Fall
San Martín gets around 75 mm of rain over 13 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 9 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 48 min in early March to 10 hours by late May. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 4.1 kWh/m².
Is fall a good time to visit San Martín?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is one of the better times to visit San Martín for general sightseeing.
What to pack for San Martín in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, San Martín sees daytime highs around 23°C and nights near 12°C. Pack light clothes. Worth having: a warm layer and sun protection. About 13 days see rain.
UV index in San Martín in Fall
Clear-sky midday UV across fall averages around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in San Martín peaks around January 18 at about 14 (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 11 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 14 | 13 | 10 | 6 | 4 | 3 | 3 | 4 | 6 | 10 | 12 | 13 |
| Level | Extreme | Extreme | Extreme | High | Moderate | Moderate | Moderate | Moderate | High | Very high | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 13 | Extreme |
| Mar | 10 | Extreme |
| Apr | 6 | High |
| May | 4 | Moderate |
| Jun | 3 | Moderate |
| Jul | 3 | Moderate |
| Aug | 4 | Moderate |
| Sep | 6 | High |
| Oct | 10 | Very high |
| Nov | 12 | Extreme |
| Dec | 13 | Extreme |
Where is San Martín?
San Martín sits at 33.1°S, 68.5°W, 656 m above sea level, in Argentina. The nearest listed city is Rivadavia, 12 km away.
Topography around San Martín
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San Martín.
Within 3 km, the terrain around San Martín has only modest variations in elevation — a maximum elevation change of 18 m around an average of 658 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 67 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,924 m.
The land around San Martín is covered by artificial surfaces (44%) within 3 km, cropland (38%), shrubs (25%) and grassland (25%) within 16 km, and shrubs (69%) 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 Martín (-33.0834°, -68.4731°, elevation 656 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.