Montevideo Weather in May
What's the weather like in Montevideo (Montevideo) in May 2026?
The climate in Montevideo during May can be summarized as mild and reasonably dry.
May is in the fall / autumn in Montevideo and is typically the 5th coldest month of the year. Daytime maximum temperatures average around 19°C (66°F), whilst at night 10°C (50°F) is normal.
| Daytime temperature | 18.7°C 65.7°F |
|---|---|
| Nightly temperature | 10.1°C 50.2°F |
| Average temperature | 14.4°C 57.9°F |
| Daily sunshine | 5.8 hrs |
| Avg rainfall | 76 mm 3 ins |
| Rainy days | 9 days |
| Sea temperature | 16.2°C 61.2°F |
| Humidity | 78% |
| Windspeed | 14.8kph 9 mph |
On average May is the 5th wettest month of the year in Montevideo with around 76mm 3 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.8 hours of sunshine per day.
May temperatures in Montevideo
May rainfall
May hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Montevideo in May 2025.
Other monthly averages
Montevideo weather stats
| Hottest month: | January | 27.9°C 82.2°F |
|---|---|---|
| Driest month: | December | 62mm 2.4ins |
| Sunniest month: | January | 10.1hrs |
| Coldest month: | July | 14.7°C 58.5°F |
| Wettest month: | October | 88mm 3.5ins |
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