Río Segundo in Summer
In summer (December, January and February), Río Segundo sees average daytime highs around 29°C and overnight lows near 18°C, with 299 mm of rain over about 31 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 29°C. The sky is clear or mostly clear about 48% of the time across summer, and the air most often feels humid.
Summer is Río Segundo's weakest season of the year to visit on our travel score. For the whole year in context, see Río Segundo's year-round climate.
- Avg daytime high
- 29°C
- warmest season of the year
- Avg overnight low
- 18°C
- Rainfall
- 299 mm
- 31 wet days
- Avg wind
- 10 km/h
- Travel score
- 5.6
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Río Segundo in Summer
Across summer, daytime highs hold fairly steady around 29°C.
A typical summer day in Río Segundo reaches about 29°C and drops to 18°C overnight. The warmest of the three months is January, the coolest February.
Río Segundo 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 | 30° / 19° | 108 | 10.1 | 13.8 | 5.3 |
| Feb | 28° / 18° | 89 | 9.8 | 13.2 | 6.3 |
| Mar | 26° / 16° | 89 | 9.2 | 12.2 | 7.0 |
| Apr | 23° / 13° | 61 | 7 | 11.2 | 7.6 |
| May | 20° / 9° | 29 | 4.3 | 10.4 | 7.2 |
| Jun | 17° / 6° | 15 | 3 | 10 | 6.5 |
| Jul | 16° / 5° | 12 | 2.5 | 10.1 | 6.5 |
| Aug | 19° / 7° | 15 | 2.4 | 10.8 | 7.7 |
| Sep | 22° / 9° | 30 | 4.4 | 11.8 | 8.0 |
| Oct | 25° / 13° | 68 | 8.2 | 12.8 | 7.4 |
| Nov | 28° / 16° | 83 | 9.7 | 13.6 | 6.5 |
| Dec | 30° / 18° | 102 | 10.8 | 14 | 5.3 |
Cloud cover in Summer
The sky is clear or mostly clear about 48% of the time across summer.
Chance of precipitation in Summer
Río Segundo gets around 299 mm of rain over 31 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 10 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 h 54 min in early December to 12 h 48 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 6.7 kWh/m².
Hazard calendar for Río Segundo
In summer, Río Segundo overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Río Segundo's rainy season runs October–April, when most of the year's rain falls.
Is summer a good time to visit Río Segundo?
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 a reasonable time to visit Río Segundo for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Río Segundo in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Río Segundo sees daytime highs around 29°C and nights near 18°C. Pack light clothes and sun protection. Worth having: rain gear. About 31 days see rain.
UV index in Río Segundo in Summer
Clear-sky midday UV across summer averages around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Río Segundo peaks around January 19 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 3 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 14 | 13 | 11 | 6 | 4 | 3 | 4 | 5 | 7 | 10 | 12 | 12 |
| Level | Extreme | Extreme | Extreme | High | Moderate | Moderate | Moderate | Moderate | High | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 13 | Extreme |
| Mar | 11 | Extreme |
| Apr | 6 | High |
| May | 4 | Moderate |
| Jun | 3 | Moderate |
| Jul | 4 | Moderate |
| Aug | 5 | Moderate |
| Sep | 7 | High |
| Oct | 10 | Extreme |
| Nov | 12 | Extreme |
| Dec | 12 | Extreme |
Where is Río Segundo?
Río Segundo sits at 31.7°S, 63.9°W, 343 m above sea level, in Argentina. The nearest listed city is Pilar, 4.0 km away.
Topography around Río Segundo
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Río Segundo.
Within 3 km, the terrain around Río Segundo has only modest variations in elevation — a maximum elevation change of 28 m around an average of 339 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 96 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,998 m.
The land around Río Segundo is covered by cropland (41%) and grassland (29%) within 3 km, cropland (91%) within 16 km, and cropland (74%) 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 Río Segundo (-31.6501°, -63.9117°, elevation 343 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.