Mercedes in Summer
In summer (December, January and February), Mercedes sees average daytime highs around 29°C and overnight lows near 17°C, with 280 mm of rain over about 25 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 51% of the time across summer, and the air most often feels humid.
Summer is Mercedes's 3rd-best season to visit on our travel score. For the whole year in context, see Mercedes's year-round climate.
- Avg daytime high
- 29°C
- warmest season of the year
- Avg overnight low
- 17°C
- Rainfall
- 280 mm
- 25 wet days
- Avg wind
- 12 km/h
- Travel score
- 6.2
- 3rd-best season
- Months
- Dec · Jan · Feb
Temperature in Mercedes in Summer
Across summer, daytime highs hold fairly steady around 29°C.
A typical summer day in Mercedes reaches about 29°C and drops to 17°C overnight. The warmest of the three months is January, the coolest December.
Mercedes 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 | 29° / 18° | 93 | 8 | 14.1 | 5.8 |
| Feb | 28° / 17° | 96 | 8 | 13.3 | 6.4 |
| Mar | 26° / 15° | 88 | 7.5 | 12.3 | 7.3 |
| Apr | 22° / 12° | 100 | 8.4 | 11.2 | 7.2 |
| May | 18° / 9° | 64 | 6.2 | 10.2 | 6.5 |
| Jun | 15° / 6° | 51 | 5.7 | 9.7 | 5.2 |
| Jul | 15° / 5° | 48 | 5.5 | 9.9 | 4.8 |
| Aug | 17° / 7° | 57 | 5.2 | 10.7 | 6.1 |
| Sep | 19° / 8° | 67 | 6.5 | 11.8 | 6.7 |
| Oct | 22° / 11° | 111 | 9.5 | 12.9 | 6.8 |
| Nov | 25° / 14° | 95 | 8.4 | 13.8 | 7.2 |
| Dec | 28° / 16° | 91 | 9.2 | 14.3 | 6.3 |
Cloud cover in Summer
The sky is clear or mostly clear about 51% of the time across summer.
Chance of precipitation in Summer
Mercedes gets around 280 mm of rain over 25 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 12 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 12 min in early December to 12 h 54 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 7.0 kWh/m².
Is summer a good time to visit Mercedes?
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 Mercedes for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Mercedes in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Mercedes sees daytime highs around 29°C and nights near 17°C. Pack light clothes and sun protection. Worth having: rain gear. About 25 days see rain.
UV index in Mercedes in Summer
Clear-sky midday UV across summer averages around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Mercedes peaks around January 14 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 3 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 13 | 11 | 9 | 6 | 4 | 3 | 3 | 4 | 6 | 8 | 11 | 12 |
| Level | Extreme | Extreme | Very high | High | Moderate | Moderate | Moderate | Moderate | High | Very high | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 11 | Extreme |
| Mar | 9 | Very high |
| Apr | 6 | High |
| May | 4 | Moderate |
| Jun | 3 | Moderate |
| Jul | 3 | Moderate |
| Aug | 4 | Moderate |
| Sep | 6 | High |
| Oct | 8 | Very high |
| Nov | 11 | Extreme |
| Dec | 12 | Extreme |
Air quality in Mercedes in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Mercedes is worst in August — around 20 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (November, 10 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) | 12 | 11 | 12 | 11 | 14 | 16 | 16 | 20 | 15 | 13 | 10 | 11 |
| Level | Moderate | Good | Moderate | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 12 | Moderate |
| Feb | 11 | Good |
| Mar | 12 | Moderate |
| Apr | 11 | Good |
| May | 14 | Moderate |
| Jun | 16 | Moderate |
| Jul | 16 | Moderate |
| Aug | 20 | Moderate |
| Sep | 15 | Moderate |
| Oct | 13 | Moderate |
| Nov | 10 | Good |
| Dec | 11 | Good |
Where is Mercedes?
Mercedes sits at 34.7°S, 59.4°W, 40 m above sea level, in Argentina. The nearest listed city is Luján, 30 km away.
Topography around Mercedes
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Mercedes.
Within 3 km, the terrain around Mercedes has only modest variations in elevation — a maximum elevation change of 24 m around an average of 38 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 49 m; within 80 km, only modest variations in elevation — a maximum elevation change of 89 m.
The land around Mercedes is covered by artificial surfaces (35%), grassland (33%) and trees (21%) within 3 km, cropland (55%) and grassland (36%) within 16 km, and cropland (62%) and grassland (26%) 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 Mercedes (-34.6507°, -59.4314°, elevation 40 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.