Tres Arroyos in Fall
In fall (March, April and May), Tres Arroyos sees average daytime highs around 21°C and overnight lows near 10°C, with 185 mm of rain over about 22 wet days across the season. It is the 2nd-warmest season and the 3rd-wettest season.
Over the season highs ease from about 26°C in early March to 15°C by late May. The sky is clear or mostly clear about 40% of the time across fall, and the air most often feels dry.
Fall is Tres Arroyos's best season of the year to visit on our travel score. For the whole year in context, see Tres Arroyos's year-round climate.
- Avg daytime high
- 21°C
- 2nd-warmest season
- Avg overnight low
- 10°C
- Rainfall
- 185 mm
- 22 wet days
- Avg wind
- 15 km/h
- Travel score
- 6.7
- best season of the year
- Months
- Mar · Apr · May
Temperature in Tres Arroyos in Fall
Over the season highs ease from about 26°C in early March to 15°C by late May.
A typical fall day in Tres Arroyos reaches about 21°C and drops to 10°C overnight. The warmest of the three months is March, the coolest May.
How fall really feels in Tres Arroyos
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.
Tres 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 | 28° / 15° | 74 | 9.7 | 14.4 | 6.1 |
| Feb | 27° / 15° | 75 | 8.3 | 13.5 | 6.9 |
| Mar | 25° / 13° | 76 | 8.2 | 12.3 | 7.4 |
| Apr | 21° / 10° | 64 | 7.2 | 11 | 6.9 |
| May | 17° / 7° | 46 | 6.2 | 9.9 | 5.7 |
| Jun | 13° / 4° | 33 | 5.2 | 9.4 | 4.2 |
| Jul | 13° / 4° | 38 | 6.1 | 9.6 | 3.8 |
| Aug | 15° / 5° | 47 | 5.8 | 10.5 | 4.9 |
| Sep | 17° / 6° | 51 | 6.9 | 11.7 | 5.8 |
| Oct | 20° / 9° | 78 | 9.4 | 13 | 6.4 |
| Nov | 23° / 11° | 83 | 9.3 | 14.1 | 7.1 |
| Dec | 27° / 14° | 78 | 8.8 | 14.6 | 6.9 |
Cloud cover in Fall
The sky is clear or mostly clear about 40% of the time across fall.
Chance of precipitation in Fall
Tres Arroyos gets around 185 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 15 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 54 min in early March to 9 h 36 min 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 3.6 kWh/m².
Is fall a good time to visit Tres 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 a reasonable time to visit Tres Arroyos for sightseeing.
What to pack for Tres Arroyos in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Tres Arroyos sees daytime highs around 21°C and nights near 10°C. Worth packing: light clothes, a warm layer, rain gear and sun protection. About 22 days see rain.
Sea temperature near Tres Arroyos in Fall
The nearest coast averages about 18°C across fall — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 56 km away) is warmest in February at about 21°C and coldest in August near 10°C.
It's comfortable for a long swim from Jan 8 to Mar 21 — about 2.4 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 21 | 21 | 20 | 18 | 15 | 12 | 10 | 10 | 11 | 13 | 16 | 18 |
| Comfort | Refreshing | Refreshing | Refreshing | Cool | Cool | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 21 | Refreshing |
| Feb | 21 | Refreshing |
| Mar | 20 | Refreshing |
| Apr | 18 | Cool |
| May | 15 | Cool |
| Jun | 12 | Bracing |
| Jul | 10 | Bracing |
| Aug | 10 | Bracing |
| Sep | 11 | Bracing |
| Oct | 13 | Bracing |
| Nov | 16 | Cool |
| Dec | 18 | Cool |
UV index in Tres Arroyos in Fall
Clear-sky midday UV across fall averages around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Tres Arroyos peaks around December 20 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 2 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 12 | 12 | 8 | 6 | 3 | 2 | 2 | 3 | 5 | 7 | 10 | 13 |
| Level | Extreme | Extreme | Very high | High | Moderate | Low | Moderate | Moderate | Moderate | Very high | Very high | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 12 | Extreme |
| Feb | 12 | Extreme |
| Mar | 8 | Very high |
| Apr | 6 | High |
| May | 3 | Moderate |
| Jun | 2 | Low |
| Jul | 2 | Moderate |
| Aug | 3 | Moderate |
| Sep | 5 | Moderate |
| Oct | 7 | Very high |
| Nov | 10 | Very high |
| Dec | 13 | Extreme |
Where is Tres Arroyos?
Tres Arroyos sits at 38.4°S, 60.3°W, 100 m above sea level, in Argentina. The nearest listed city is Benito Juárez, 89 km away.
Topography around Tres Arroyos
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Tres Arroyos.
Within 3 km, the terrain around Tres Arroyos has only modest variations in elevation — a maximum elevation change of 21 m around an average of 109 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 93 m; within 80 km, significant variations in elevation — a maximum elevation change of 268 m.
The land around Tres Arroyos is covered by artificial surfaces (43%) and grassland (41%) within 3 km, cropland (81%) within 16 km, and cropland (61%) and grassland (28%) 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 Tres Arroyos (-38.3769°, -60.2756°, elevation 100 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.