Arroyo Seco in Winter
In winter (June, July and August), Arroyo Seco sees average daytime highs around 17°C and overnight lows near 7°C, with 134 mm of rain over about 15 wet days across the season. It is the coldest season of the year and the driest season of the year.
Over the season highs climb from about 17°C in early June to 19°C by late August. The sky is clear or mostly clear about 43% of the time across winter, and the air most often feels dry.
Winter is Arroyo Seco's 3rd-best season to visit on our travel score. For the whole year in context, see Arroyo Seco's year-round climate.
- Avg daytime high
- 17°C
- coldest season of the year
- Avg overnight low
- 7°C
- Rainfall
- 134 mm
- 15 wet days
- Avg wind
- 12 km/h
- Travel score
- 6.1
- 3rd-best season
- Months
- Jun · Jul · Aug
Temperature in Arroyo Seco in Winter
Over the season highs climb from about 17°C in early June to 19°C by late August.
A typical winter day in Arroyo Seco reaches about 17°C and drops to 7°C overnight. The warmest of the three months is August, the coolest July.
Arroyo Seco 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 | 30° / 19° | 105 | 8 | 13.9 | 5.5 |
| Feb | 29° / 18° | 111 | 8.2 | 13.2 | 6.0 |
| Mar | 27° / 17° | 121 | 7.4 | 12.3 | 7.1 |
| Apr | 23° / 13° | 104 | 8.2 | 11.2 | 7.4 |
| May | 19° / 10° | 67 | 5.9 | 10.3 | 6.8 |
| Jun | 16° / 7° | 42 | 4.9 | 9.9 | 5.8 |
| Jul | 16° / 6° | 39 | 5.1 | 10 | 5.6 |
| Aug | 18° / 7° | 54 | 4.8 | 10.8 | 6.8 |
| Sep | 21° / 10° | 65 | 6 | 11.8 | 7.2 |
| Oct | 23° / 13° | 113 | 9.8 | 12.8 | 7.1 |
| Nov | 26° / 15° | 113 | 8 | 13.7 | 7.1 |
| Dec | 29° / 18° | 107 | 9 | 14.2 | 5.9 |
Cloud cover in Winter
The sky is clear or mostly clear about 43% of the time across winter.
Chance of precipitation in Winter
Arroyo Seco gets around 134 mm of rain over 15 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 12 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 10 hours 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 2.9 kWh/m².
Is winter a good time to visit Arroyo Seco?
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 Arroyo Seco for sightseeing.
What to pack for Arroyo Seco in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Arroyo Seco sees daytime highs around 17°C and nights near 7°C. Worth packing: a warm layer. About 15 days see rain.
UV index in Arroyo Seco 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 Arroyo Seco 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 Arroyo Seco 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 Arroyo Seco is worst in August — around 20 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (April, 7 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) | 9 | 8 | 8 | 7 | 8 | 10 | 13 | 20 | 19 | 10 | 8 | 8 |
| Level | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 9 | Good |
| Feb | 8 | Good |
| Mar | 8 | Good |
| Apr | 7 | Good |
| May | 8 | Good |
| Jun | 10 | Good |
| Jul | 13 | Moderate |
| Aug | 20 | Moderate |
| Sep | 19 | Moderate |
| Oct | 10 | Good |
| Nov | 8 | Good |
| Dec | 8 | Good |
Where is Arroyo Seco?
Arroyo Seco sits at 33.2°S, 60.5°W, 31 m above sea level, in Argentina. The nearest listed city is Gobernador Gálvez, 18 km away.
Topography around Arroyo Seco
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Arroyo Seco.
Within 3 km, the terrain around Arroyo Seco has only modest variations in elevation — a maximum elevation change of 29 m around an average of 22 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 59 m; within 80 km, only modest variations in elevation — a maximum elevation change of 101 m.
The land around Arroyo Seco is covered by cropland (46%) and grassland (23%) within 3 km, cropland (53%) and wetland (23%) within 16 km, and cropland (57%) and wetland (27%) 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 Arroyo Seco (-33.1536°, -60.5117°, elevation 31 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.