Montevideo features a humid subtropical climate with warm, sunny summers and mild, damp winters. The city experiences four distinct seasons, moderate rainfall year-round, and significant changes in daylight. Summer brings lively beach life and festivals, while spring and autumn offer mild, pleasant weather – making Montevideo a comfortable and vibrant destination throughout the year.
The best times to travel section shows how the months compare for a visit, so you can find the time of year that fits what you want to do.
Background colours of the months:
The colour shows the typical temperature: yellow (hot), green (mild) and blue (cold). How strong the colour is shows the travel season: full colour means high season, soft colour means shoulder season and soft-striped means off season.
Weather symbols:
Each month has one symbol showing what the weather is typically like, such as hot and sunny, freezing or a rainy or snowy season. Use them to quickly spot months that match the weather you want, or to avoid the ones that don't.
Crowdedness:
The people icon shows how busy the place usually is. The more people, the more crowded it gets.
Additional notes:
The grey info boxes point out special things worth knowing, like recurring weather issues or seasonal events.
Montevideo’s climate is shaped by its southern coastal location and proximity to the Atlantic Ocean, resulting in moderate year-round temperatures and regular rainfall. Summers (December–February) are warm and humid, with average highs of 27–29°C and lows around 17–19°C. Heatwaves can push temperatures above 35°C, but sea breezes provide relief, and nights are generally pleasant. Rainfall is moderate, with January and February averaging 70–90 mm over 5–9 days, and sunshine is abundant – up to 10 hours daily. The city’s beaches and outdoor festivals are at their peak during these months, and water temperatures reach a comfortable 21–23°C.
Winters (June–August) are mild to cool, with highs of 14–16°C and lows near 6–8°C. Frost is rare, but humidity and winds off the South Atlantic can make it feel colder. Rain is frequent, especially in July, with 90–110 mm monthly, and cloudy skies are common. Snow is virtually unknown. Spring (September–November) and autumn (March–May) are transitional and particularly pleasant, with highs from 18–25°C, cool nights, and moderate rainfall. These seasons offer blooming parks, fewer crowds, and vibrant city life. Annual precipitation averages 950–1,000 mm, well distributed throughout the year. Montevideo enjoys about 2,400–2,500 hours of sunshine annually, with daylight ranging from 9 hours in winter to 14 hours in summer. Winds are generally moderate (10–18 km/h), but can be brisk during storms, especially in winter and spring.
| Average climate data for Montevideo, Uruguay | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Average maximum temperature (°C) | 29 | 28 | 25 | 22 | 19 | 15 | 15 | 16 | 18 | 20 | 24 | 27 | 29 |
| Average minimum temperature (°C) | 18 | 18 | 16 | 13 | 10 | 8 | 7 | 8 | 9 | 11 | 14 | 16 | 7 |
| Average precipitation (mm) | 86 | 101 | 105 | 85 | 89 | 84 | 87 | 87 | 95 | 107 | 90 | 85 | 1,102 |
| Average rainfall days (days) | 6 | 7 | 6 | 6 | 6 | 7 | 7 | 6 | 6 | 7 | 7 | 6 | 77 |
| Average relative humidity (%) | 68 | 69 | 74 | 76 | 78 | 83 | 81 | 77 | 75 | 72 | 71 | 67 | 74 |
| Average water temperature (°C) | 24 | 23 | 23 | 19 | 16 | 13 | 11 | 12 | 13 | 17 | 20 | 22 | 18 |
| Average daily daylight hours (h) | 14 | 13 | 12 | 11 | 10 | 9 | 10 | 10 | 11 | 13 | 14 | 14 | 12 |
| Average daily sunshine hours (h) | 9 | 8 | 7 | 6 | 5 | 4 | 4 | 5 | 6 | 7 | 8 | 9 | 7 |
| Average UV index | 12 | 11 | 9 | 6 | 3 | 2 | 2 | 4 | 6 | 8 | 10 | 12 | 7 |
The best time to visit Montevideo is during the shoulder seasons – spring (October to December) and autumn (March to May) – when temperatures are mild (18–25°C), rainfall is moderate, and the city is lively but less crowded. These periods are ideal for sightseeing, cultural festivals, and enjoying the beaches before or after the summer rush.
The least favourable time to visit is in winter (June–August), when days are shortest, rain and wind are frequent, and the weather can feel chilly and damp. While the city remains vibrant, outdoor activities and beach life are limited, and some coastal businesses may close for the season.
Montevideo has a humid subtropical climate with warm, sunny summers and mild, damp winters. Rainfall is spread throughout the year, and the city enjoys significant sunshine, especially in summer.
Summer temperatures in Montevideo typically reach 27–29°C, with occasional heatwaves above 35°C. Nights are pleasant, and sea breezes help moderate the heat, making the city comfortable for outdoor activities.
Snow is extremely rare in Montevideo. Winter temperatures usually range from 6–16°C, though humidity and wind can make it feel colder. Frost is possible but not common, and most winter days are mild.
Rain falls year-round, but the wettest months are typically in late autumn and winter (May–July), with monthly totals of 90–110 mm. Summer rain is less frequent and often comes as brief thunderstorms.
Montevideo enjoys about 2,400–2,500 hours of sunshine annually. Summer months have up to 10 hours of sunshine per day, while winter averages 4–5 hours daily, making the city bright and lively most of the year.
Pack light, breathable clothes and sun protection for summer. In spring and autumn, bring layers and a rain jacket. For winter, warm, waterproof layers and sturdy shoes are recommended for chilly, damp days.
Montevideo is humid year-round, especially in winter and spring. Winds are moderate to brisk, particularly in winter, which can make cold days feel chillier. Sea breezes are common in summer.
The warmest month, with the highest average maximum temperature, is January (28.5 °C). The month with the lowest average maximum temperature is July (15.1 °C). Overall, the average maximum temperature over the whole year is 21.5 °C.
The month with the highest average minimum temperature is January (18 °C). The coldest month, with the lowest average minimum temperature, is July (7.2 °C). Overall, the average minimum temperature over the whole year is 12.4 °C.
The month with the highest average water temperature is January (24.3 °C). The month with the lowest average water temperature is July (11.4 °C). Overall, the average water temperature over the whole year is 17.8 °C.
The wettest month, with the highest amount of precipitation, is October (107 mm). The driest month, with the least amount of precipitation, is June (83.8 mm). Over the whole year there are 1,101.6 mm of rainfall on average.
The month with the most days of rain is October (7.1 days). The month with the fewest days of rain is March (5.9 days). Over the whole year there are 77.2 days of rain on average.
The month with the highest average relative humidity is June (83 %). The month with the lowest average relative humidity is December (66.9 %). The overall average relative humidity over the whole year is 74.3 %.
The month with the longest days, so the most daylight, is December (Average daylight: 14 h). The month with the shortest days, so the least daylight, is June (Average daylight: 9.1 h). Over the whole year there are 11.8 h of daylight per day on average.
The month with the most sunshine per day is December (Average sunshine: 8.9 h). The month with the least sunshine per day is July (Average sunshine: 4 h). Over the whole year there are 6.5 h of sunlight per day on average.
The months with the highest average UV index are January and December (UV index: 12). The months with the lowest average UV index are June and July (UV index: 2). Over the whole year the average UV index is 7.1.
