Montevideo weather in December
December is one of the best months to visit Montevideo: highs of 25°C (76°F) and about 86 mm (3.4 in) of rain on average. Nights average 18°C (65°F) and cloud cover 44% (NASA POWER, 2001–2025 averages). The sea averages 23°C (74°F). It is the 2nd driest month of the year and the 3rd warmest. Compared with November, it is warmer and about as wet; January brings highs of 26°C (80°F) and 102 mm (4.0 in) of rain.
Is December a good time to visit Montevideo?
best month Weather score 77/100.
Yes. December is one of the best months for weather in Montevideo.
Does it rain a lot in Montevideo in December?
Some rain is normal: about 86 mm (3.4 in) falls in an average December. It is the 2nd driest month of the year.
How warm is Montevideo in December?
Days average 25°C (76°F) and nights 18°C (65°F).
Montevideo weather by month
| Month | High | Low | Rain | Cloud | Sea | Weather |
|---|---|---|---|---|---|---|
| January | 26°C (80°F) | 20°C (68°F) | 102 mm | 44% | 25°C (76°F) | best |
| February | 26°C (78°F) | 20°C (68°F) | 106 mm | 49% | 25°C (78°F) | best |
| March | 24°C (75°F) | 19°C (65°F) | 118 mm | 45% | 24°C (75°F) | best |
| April | 20°C (69°F) | 16°C (60°F) | 114 mm | 48% | 20°C (67°F) | best |
| May | 17°C (62°F) | 13°C (55°F) | 84 mm | 56% | 16°C (60°F) | fair |
| June | 14°C (57°F) | 10°C (49°F) | 98 mm | 57% | 13°C (55°F) | least pleasant |
| July | 12°C (54°F) | 8°C (47°F) | 92 mm | 59% | 10°C (50°F) | least pleasant |
| August | 14°C (57°F) | 9°C (48°F) | 89 mm | 57% | 12°C (53°F) | least pleasant |
| September | 16°C (60°F) | 11°C (51°F) | 96 mm | 55% | 15°C (59°F) | fair |
| October | 19°C (65°F) | 13°C (56°F) | 103 mm | 53% | 19°C (66°F) | fair |
| November | 22°C (71°F) | 16°C (60°F) | 96 mm | 47% | 21°C (70°F) | best |
| December | 25°C (76°F) | 18°C (65°F) | 86 mm | 44% | 23°C (74°F) | best |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), sea temperature from Open-Meteo Marine. Page updated . How we rate months