San Nicolás de los Arroyos in Fall
In fall (March, April and May), San Nicolás de los Arroyos sees average daytime highs around 23°C and overnight lows near 14°C, with 289 mm of rain over about 22 wet days across the season. It is the 3rd-warmest season and the 3rd-wettest season.
Over the season highs ease from about 28°C in early March to 18°C by late May. The sky is clear or mostly clear about 45% of the time across fall, and the air most often feels dry.
Fall is San Nicolás de los Arroyos's 2nd-best season to visit on our travel score. For the whole year in context, see San Nicolás de los Arroyos's year-round climate.
- Avg daytime high
- 23°C
- 3rd-warmest season
- Avg overnight low
- 14°C
- Rainfall
- 289 mm
- 22 wet days
- Avg wind
- 11 km/h
- Travel score
- 7.1
- 2nd-best season
- Months
- Mar · Apr · May
Temperature in San Nicolás de los Arroyos in Fall
Over the season highs ease from about 28°C in early March to 18°C by late May.
A typical fall day in San Nicolás de los Arroyos reaches about 23°C and drops to 14°C overnight. The warmest of the three months is March, the coolest May.
San Nicolás de los Arroyos 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 | 30° / 19° | 103 | 8.2 | 14 | 5.4 |
| Feb | 29° / 19° | 107 | 8.1 | 13.2 | 5.9 |
| Mar | 27° / 17° | 117 | 7.5 | 12.3 | 7.0 |
| Apr | 23° / 14° | 106 | 8.1 | 11.2 | 7.4 |
| May | 19° / 11° | 66 | 6 | 10.3 | 6.8 |
| Jun | 16° / 8° | 44 | 5.2 | 9.8 | 5.8 |
| Jul | 16° / 7° | 42 | 5.1 | 10 | 5.6 |
| Aug | 18° / 8° | 56 | 5 | 10.8 | 6.8 |
| Sep | 21° / 10° | 67 | 6.3 | 11.8 | 7.1 |
| Oct | 23° / 13° | 112 | 9.7 | 12.8 | 7.1 |
| Nov | 26° / 15° | 115 | 7.6 | 13.7 | 7.2 |
| Dec | 29° / 18° | 107 | 8.6 | 14.2 | 6.0 |
Cloud cover in Fall
The sky is clear or mostly clear about 45% of the time across fall.
Chance of precipitation in Fall
San Nicolás de los Arroyos gets around 289 mm of rain over 22 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 11 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 3.8 kWh/m².
Is fall a good time to visit San Nicolás de los Arroyos?
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 Nicolás de los Arroyos for general sightseeing.
What to pack for San Nicolás de los Arroyos in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, San Nicolás de los Arroyos sees daytime highs around 23°C and nights near 14°C. Pack light clothes. Worth having: rain gear and sun protection. About 22 days see rain.
UV index in San Nicolás de los Arroyos 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 Nicolás de los Arroyos peaks around January 15 at about 13 (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 | 12 | 10 | 6 | 4 | 3 | 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 | 14 | Extreme |
| Feb | 12 | Extreme |
| Mar | 10 | Very high |
| Apr | 6 | High |
| May | 4 | Moderate |
| Jun | 3 | Moderate |
| Jul | 3 | Moderate |
| Aug | 4 | Moderate |
| Sep | 6 | High |
| Oct | 9 | Very high |
| Nov | 11 | Extreme |
| Dec | 12 | Extreme |
Air quality in San Nicolás de los Arroyos in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in San Nicolás de los Arroyos is worst in August — around 46 µg/m³ PM2.5 (poor), about 8.0× the cleanest month (April, 6 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) | 8 | 7 | 7 | 6 | 7 | 10 | 28 | 46 | 20 | 14 | 8 | 7 |
| Level | Good | Good | Good | Good | Good | Good | Moderate | Poor | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 7 | Good |
| Mar | 7 | Good |
| Apr | 6 | Good |
| May | 7 | Good |
| Jun | 10 | Good |
| Jul | 28 | Moderate |
| Aug | 46 | Poor |
| Sep | 20 | Moderate |
| Oct | 14 | Moderate |
| Nov | 8 | Good |
| Dec | 7 | Good |
Where is San Nicolás de los Arroyos?
San Nicolás de los Arroyos sits at 33.3°S, 60.2°W, 28 m above sea level, in Argentina. The nearest listed city is Villa Constitución, 16 km away.
Topography around San Nicolás de los Arroyos
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San Nicolás de los Arroyos.
Within 3 km, the terrain around San Nicolás de los Arroyos has only modest variations in elevation — a maximum elevation change of 38 m around an average of 16 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 98 m.
The land around San Nicolás de los Arroyos is covered by artificial surfaces (42%) within 3 km, cropland (39%) and wetland (32%) within 16 km, and cropland (50%) and wetland (31%) 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 Nicolás de los Arroyos (-33.3342°, -60.2108°, elevation 28 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.