Climate averages 1991–2020
Montevideo weather
in January.
A warm, moderately wet month: the warmest and the driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
January is a warm month in Montevideo: daytime highs average 25.2°C and nights cool to about 19.6°C. By daytime temperature it is the warmest month of the year.
Expect about 68 mm of rain on roughly 6 days, which makes January a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 14 h 12 min on an average January day.
The nearest other city in this atlas is Maldonado (113 km away). In January its highs average 24.3°C, 0.9°C cooler than Montevideo, with 63 mm of rain.
Among the 4 cities listed in Uruguay, Montevideo ranks 3rd of 4 for the warmest January highs and 2nd of 4 for the driest January (rainfall, lowest first). The mean January high of those 4 cities is 27.2°C; Montevideo is 2.0°C cooler than that mean.
From January to February, average highs fall by 0.5°C to 24.7°C, and monthly rainfall rises from 68 mm to 92 mm.
The annual picture
January in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Montevideo climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 25.2°C19.6°C | 19.6°C | 68 | 5.9 | 14.214 h |
| February | 24.7°C19.6°C | 19.6°C | 92 | 7.8 | 13.413 h |
| March | 23.2°C18.3°C | 18.3°C | 97 | 7.9 | 12.312 h |
| April | 20.1°C15.5°C | 15.5°C | 107 | 8.3 | 11.211 h |
| May | 16.7°C12.6°C | 12.6°C | 87 | 7.9 | 10.310 h |
| June | 14.0°C9.8°C | 9.8°C | 90 | 8.6 | 9.910 h |
| July | 12.8°C8.5°C | 8.5°C | 96 | 8.9 | 10.010 h |
| August | 14.5°C9.5°C | 9.5°C | 97 | 8.5 | 10.811 h |
| September | 15.6°C10.6°C | 10.6°C | 92 | 8.3 | 11.812 h |
| October | 18.2°C13.1°C | 13.1°C | 111 | 8.7 | 12.913 h |
| November | 21.1°C15.4°C | 15.4°C | 101 | 7.7 | 13.914 h |
| December | 23.7°C17.9°C | 17.9°C | 73 | 6.9 | 14.414 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
January in nearby cities
- Maldonado in JanuaryUruguay · 113 kmHigh 24.3°C · Low 19.0°C · 63 mm rain
- Berisso in JanuaryArgentina · 155 kmHigh 27.4°C · Low 20.2°C · 79 mm rain
- La Plata in JanuaryArgentina · 161 kmHigh 27.4°C · Low 19.9°C · 92 mm rain
- Berazategui in JanuaryArgentina · 185 kmHigh 27.5°C · Low 20.2°C · 83 mm rain
- Quilmes in JanuaryArgentina · 190 kmHigh 27.9°C · Low 19.9°C · 83 mm rain
- Mar del Tuyú in JanuaryArgentina · 191 kmHigh 23.5°C · Low 19.3°C · 75 mm rain
- Avellaneda in JanuaryArgentina · 201 kmHigh 27.9°C · Low 20.2°C · 83 mm rain
- Buenos Aires in JanuaryArgentina · 203 kmHigh 27.6°C · Low 20.3°C · 83 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Montevideo) is explained once on the Montevideo year overview and on the Sources, method and limits page.