Montevideo, Uruguay Climate & Monthly Averages
Montevideo has a humid subtropical climate. January is the hottest month, averaging 80° by day; July is the coldest at 57°.
Sunshine is a defining feature of Montevideo's climate
Weather in Montevideo follows a humid subtropical pattern. The warmest and coolest months, January and July, average 80°F (26°C) and 57°F (14°C) by day; nights in those months run 68°F (20°C) and 48°F (9°C).
How sun, temperature and rain fit together
Warmth peaks in January: highs of 80°F (26°C), lows of 68°F (20°C). July sits at the other end of the year: 57°F (14°C) by day, 48°F (9°C) at night. Across the gridded 2015-2024 daily record, the highest daily maximum for this location was 102°F (39°C) and the lowest daily minimum 33°F (1°C). Seven of the twelve months pair mild highs with fewer than twelve wet days; the longest unbroken run is October through April.
Precipitation concentrates in April - 4.3 inches (110 mm) on 9 days - and thins out by September. Days and nights are about 6°C apart on average - narrower than all but 8% of the 3496 cities in our dataset. December is the brightest month at 12.2 hours of sun a day, against an annual average of 9.5.
More climate facts for Montevideo
- Hottest month: January - highs near 80°F (26°C)
- Coldest month: July - highs near 57°F (14°C)
- Decade extremes (2015-2024): 102°F (39°C) high · 33°F (1°C) low
- Wettest month: April (9 rainy days) · Sunniest: December (12.2 h sun/day)
- Climate type: humid subtropical
- Annual swing: 12°C between the average warmest and coolest month · day to night: 6°C
- Average humidity: 74%
The most comfortable sunny-weather window
Best time to visit Montevideo
November to December and May is the sweet spot for Montevideo - warm days, manageable rainfall and plenty of daylight line up. Expect 68°F (20°C) in the afternoon and around 7 days of rain in a typical month of it. For the same question asked the other way round, see where else is warm in November.
What to pack
Pack for Montevideo with a warm jacket and layers for the cooler season and a compact umbrella or rain shell. January nights average 68°F (20°C), so evenings rarely match the afternoons.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 80° | 68° | 9 | 2.8 in | 12.1 h/day | 14.3 h | 28% | 70% |
| February | 79° | 68° | 8 | 3.0 in | 11.3 h/day | 13.4 h | 30% | 71% |
| March | 76° | 65° | 10 | 3.4 in | 10.3 h/day | 12.4 h | 34% | 72% |
| April | 71° | 61° | 9 | 4.3 in | 8.7 h/day | 11.3 h | 31% | 75% |
| May | 63° | 54° | 7 | 3.1 in | 7.5 h/day | 10.3 h | 22% | 77% |
| June | 59° | 50° | 8 | 2.7 in | 7.2 h/day | 9.8 h | 26% | 79% |
| July | 57° | 48° | 9 | 4.0 in | 7.1 h/day | 10.0 h | 30% | 80% |
| August | 60° | 49° | 8 | 3.5 in | 7.9 h/day | 10.8 h | 26% | 78% |
| September | 62° | 51° | 7 | 2.4 in | 8.7 h/day | 11.9 h | 25% | 77% |
| October | 66° | 55° | 10 | 3.4 in | 9.9 h/day | 13.0 h | 33% | 75% |
| November | 72° | 60° | 7 | 2.9 in | 11.2 h/day | 14.0 h | 24% | 71% |
| December | 76° | 64° | 8 | 2.8 in | 12.2 h/day | 14.5 h | 26% | 69% |
Montevideo month by month
Each card shows the average high and low. The bar places that month between Montevideo's coldest night and warmest afternoon.
January
- Rain
- 9 days
- Sunshine
- 12.1 h
- Daylight
- 14.3 h
February
- Rain
- 8 days
- Sunshine
- 11.3 h
- Daylight
- 13.4 h
March
- Rain
- 10 days
- Sunshine
- 10.3 h
- Daylight
- 12.4 h
April
- Rain
- 9 days
- Sunshine
- 8.7 h
- Daylight
- 11.3 h
May
- Rain
- 7 days
- Sunshine
- 7.5 h
- Daylight
- 10.3 h
June
- Rain
- 8 days
- Sunshine
- 7.2 h
- Daylight
- 9.8 h
July
- Rain
- 9 days
- Sunshine
- 7.1 h
- Daylight
- 10.0 h
August
- Rain
- 8 days
- Sunshine
- 7.9 h
- Daylight
- 10.8 h
September
- Rain
- 7 days
- Sunshine
- 8.7 h
- Daylight
- 11.9 h
October
- Rain
- 10 days
- Sunshine
- 9.9 h
- Daylight
- 13.0 h
November
- Rain
- 7 days
- Sunshine
- 11.2 h
- Daylight
- 14.0 h
December
- Rain
- 8 days
- Sunshine
- 12.2 h
- Daylight
- 14.5 h
Looking for warmer alternatives? Browse warm places by month, or compare Montevideo's coolest part of the year: July, June, August.
Seasonal weather under Montevideo's sunnier skies
Spring (September through November)
Through spring, Montevideo stays on the cool side of mild: 66°F (19°C) by day, 56°F (13°C) after dark, and expect showers on roughly 25 days across the season.
Summer (December through February)
Summer in Montevideo is pleasantly warm, with daytime highs averaging 78°F (26°C) and nights around 66°F (19°C); expect showers on roughly 25 days across the season. Daylight is generous - around 11.9 hours of sun a day.
Fall (March through May)
Through fall, Montevideo is mild and warm: 70°F (21°C) by day, 60°F (16°C) after dark, and expect showers on roughly 27 days across the season.
Winter (June through August)
Winter in Montevideo is mild, with daytime highs averaging 58°F (15°C) and nights around 49°F (9°C); expect showers on roughly 25 days across the season.
How unusual is Montevideo?
- 28% of the year's precipitation falls in its wettest three months - more evenly spread than almost every other city we track.
These comparisons use the same ten-year window for every city in the dataset.
Montevideo temperature extremes in the 2015–2024 dataset
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need another precipitation unit? Use the rainfall converter.