Climate averages 1991–2020
Montevideo weather
in May.
A mild, moderately wet month: the 8th warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in Montevideo: daytime highs average 16.7°C and nights cool to about 12.6°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 87 mm of rain on roughly 8 days, which makes May a moderately wet month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 19 min on an average May day.
The nearest other city in this atlas is Maldonado (113 km away). In May its highs average 16.8°C, about as warm as Montevideo, with 92 mm of rain.
Among the 4 cities listed in Uruguay, Montevideo ranks 4th of 4 for the warmest May highs and 1st of 4 for the driest May (rainfall, lowest first). The mean May high of those 4 cities is 18.0°C; Montevideo is 1.3°C cooler than that mean.
From May to June, average highs fall by 2.8°C to 14.0°C, and monthly rainfall rises from 87 mm to 90 mm.
The annual picture
May 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 | 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, selected | 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
May in nearby cities
- Maldonado in MayUruguay · 113 kmHigh 16.8°C · Low 12.7°C · 92 mm rain
- Berisso in MayArgentina · 155 kmHigh 17.1°C · Low 11.5°C · 72 mm rain
- La Plata in MayArgentina · 161 kmHigh 17.0°C · Low 11.2°C · 60 mm rain
- Berazategui in MayArgentina · 185 kmHigh 17.1°C · Low 11.4°C · 63 mm rain
- Quilmes in MayArgentina · 190 kmHigh 17.3°C · Low 11.0°C · 63 mm rain
- Mar del Tuyú in MayArgentina · 191 kmHigh 15.6°C · Low 12.1°C · 60 mm rain
- Avellaneda in MayArgentina · 201 kmHigh 17.3°C · Low 11.2°C · 63 mm rain
- Buenos Aires in MayArgentina · 203 kmHigh 17.2°C · Low 11.5°C · 72 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.