Treinta y Tres Weather in May
What's the weather like in Treinta y Tres (Treinta y Tres) in May 2026?
The climate in Treinta y Tres during May can be summarized as mild and a little damp.
May is in the fall / autumn in Treinta y Tres and is typically the 5th coldest month of the year. Daytime maximum temperatures average around 20°C (68°F), whilst at night 9°C (48°F) is normal.
| Daytime temperature | 20°C 67.9°F |
|---|---|
| Nightly temperature | 8.7°C 47.6°F |
| Average temperature | 14.3°C 57.7°F |
| Daily sunshine | 5.8 hrs |
| Avg rainfall | 98 mm 3.9 ins |
| Rainy days | 9 days |
| Sea temperature | 17.3°C 63.2°F |
| Humidity | 77% |
| Windspeed | 10.1kph 6 mph |
On average May is the 4th driest month of the year in Treinta y Tres with around 98mm 3.9 inches of rain making it a a little damp 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 Treinta y Tres
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 Treinta y Tres in May 2025.
Other monthly averages
Treinta y Tres weather stats
| Hottest month: | January | 29.3°C 84.7°F |
|---|---|---|
| Driest month: | April | 82mm 3.2ins |
| Sunniest month: | December | 9.4hrs |
| Coldest month: | July | 16.2°C 61.2°F |
| Wettest month: | July | 130mm 5.1ins |
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