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 | 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
Average high and low for each month, with the bar showing where it sits in Montevideo's year (left is the coldest night, right is the 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
Warmer places to go, by month: January · February · March · April · May · June · July · August · September · October · November · December
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. Need the precipitation in other units? The mm-to-inches rainfall converter handles it.