Montevideo, Uruguay Weather
Montevideo hourly forecast: next 24 hours
Today's high of 59°F (15°C) is about 3°F (2°C) below the typical September high of 62°F (16°C).
Current conditions in detail
Montevideo weather tomorrow (Thursday, September 17)
Tomorrow in Montevideo looks sunny, with a high of 69° and an overnight low of 44°. Rain is unlikely (7% chance). Winds top out near 9 mph, and the UV index reaches 7 (high).
Montevideo 14-day forecast
About the weather in 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).
Montevideo weather: 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.
Season by season
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.
Average temperatures in Montevideo by month
| 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% |