Montevideo, Uruguay Climate & Monthly Averages
The climate of Montevideo
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).
Climate quick facts
- 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%
Temperatures through the year
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.
Rain, sun and snow
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.
How Montevideo compares
- 28% of the year's precipitation falls in its wettest three months - more evenly spread than almost every other city we track.
Ranked against every city in our dataset, each measured on the same ten-year window.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 80° | 68° | 9 | 2.8 in | 12.1 h/day | 70% |
| February | 79° | 68° | 8 | 3.0 in | 11.3 h/day | 71% |
| March | 76° | 65° | 10 | 3.4 in | 10.3 h/day | 72% |
| April | 71° | 61° | 9 | 4.3 in | 8.7 h/day | 75% |
| May | 63° | 54° | 7 | 3.1 in | 7.5 h/day | 77% |
| June | 59° | 50° | 8 | 2.7 in | 7.2 h/day | 79% |
| July | 57° | 48° | 9 | 4.0 in | 7.1 h/day | 80% |
| August | 60° | 49° | 8 | 3.5 in | 7.9 h/day | 78% |
| September | 62° | 51° | 7 | 2.4 in | 8.7 h/day | 77% |
| October | 66° | 55° | 10 | 3.4 in | 9.9 h/day | 75% |
| November | 72° | 60° | 7 | 2.9 in | 11.2 h/day | 71% |
| December | 76° | 64° | 8 | 2.8 in | 12.2 h/day | 69% |
Montevideo month by month
Montevideo weather in January
January brings highs around 80°F (26°C), lows near 68°F (20°C), about 9 wet days - typically the hottest month of the year in Montevideo.
Montevideo weather in February
February brings highs around 79°F (26°C), lows near 68°F (20°C), about 8 wet days.
Montevideo weather in March
March brings highs around 76°F (24°C), lows near 65°F (18°C), about 10 wet days.
Montevideo weather in April
April brings highs around 71°F (21°C), lows near 61°F (16°C), about 9 wet days - typically the wettest month of the year in Montevideo.
Montevideo weather in May
May brings highs around 63°F (17°C), lows near 54°F (12°C), about 7 wet days.
Montevideo weather in June
June brings highs around 59°F (15°C), lows near 50°F (10°C), about 8 wet days.
Montevideo weather in July
July brings highs around 57°F (14°C), lows near 48°F (9°C), about 9 wet days - typically the coldest month of the year in Montevideo.
Montevideo weather in August
August brings highs around 60°F (15°C), lows near 49°F (10°C), about 8 wet days.
Montevideo weather in September
September brings highs around 62°F (16°C), lows near 51°F (11°C), about 7 wet days - typically the driest month of the year in Montevideo.
Montevideo weather in October
October brings highs around 66°F (19°C), lows near 55°F (13°C), about 10 wet days.
Montevideo weather in November
November brings highs around 72°F (22°C), lows near 60°F (16°C), about 7 wet days.
Montevideo weather in December
December brings highs around 76°F (25°C), lows near 64°F (18°C), about 8 wet days - typically the sunniest month of the year in Montevideo.
Seasons in Montevideo
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.
Climate questions, answered
How much sun does Montevideo get?
How warm is Montevideo on average?
How cold does Montevideo get in winter?
How hot does Montevideo get in summer?
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.
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.
Montevideo temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ.