Climate averages 1991–2020
Avellaneda weather
in May.
A mild, moderately wet month: the 9th warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in Avellaneda: daytime highs average 17.3°C and nights cool to about 11.2°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 63 mm of rain on roughly 6 days, which makes May a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 10 h 20 min on an average May day.
The nearest other city in this atlas is Buenos Aires (5 km away). In May its highs average 17.2°C, about as warm as Avellaneda, with 72 mm of rain.
Among the 67 cities listed in Argentina, Avellaneda ranks joint 46th of 67 for the warmest May highs and joint 38th of 67 for the driest May (rainfall, lowest first). The mean May high of those 67 cities is 18.0°C; Avellaneda is 0.7°C cooler than that mean.
From May to June, average highs fall by 2.9°C to 14.4°C, and monthly rainfall rises from 63 mm to 67 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
Avellaneda climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.9°C20.2°C | 20.2°C | 83 | 7.1 | 14.214 h |
| February | 26.7°C19.5°C | 19.5°C | 92 | 7.8 | 13.413 h |
| March | 24.7°C17.9°C | 17.9°C | 88 | 7.2 | 12.312 h |
| April | 21.1°C14.3°C | 14.3°C | 94 | 7.9 | 11.211 h |
| May, selected | 17.3°C11.2°C | 11.2°C | 63 | 6.0 | 10.310 h |
| June | 14.4°C8.2°C | 8.2°C | 67 | 6.4 | 9.910 h |
| July | 13.5°C7.1°C | 7.1°C | 67 | 6.8 | 10.110 h |
| August | 15.7°C8.5°C | 8.5°C | 66 | 6.4 | 10.811 h |
| September | 17.5°C10.1°C | 10.1°C | 74 | 7.1 | 11.812 h |
| October | 20.4°C13.0°C | 13.0°C | 109 | 9.3 | 12.913 h |
| November | 23.7°C15.8°C | 15.8°C | 94 | 8.1 | 13.914 h |
| December | 26.7°C18.5°C | 18.5°C | 81 | 8.0 | 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
- Buenos Aires in MayArgentina · 5 kmHigh 17.2°C · Low 11.5°C · 72 mm rain
- Lomas de Zamora in MayArgentina · 11 kmHigh 17.5°C · Low 10.6°C · 61 mm rain
- Quilmes in MayArgentina · 12 kmHigh 17.3°C · Low 11.0°C · 63 mm rain
- Berazategui in MayArgentina · 18 kmHigh 17.1°C · Low 11.4°C · 63 mm rain
- Isidro Casanova in MayArgentina · 21 kmHigh 17.8°C · Low 10.2°C · 61 mm rain
- Laferrere in MayArgentina · 22 kmHigh 17.8°C · Low 10.1°C · 61 mm rain
- Ezeiza in MayArgentina · 26 kmHigh 17.8°C · Low 10.0°C · 61 mm rain
- Don Torcuato in MayArgentina · 30 kmHigh 17.7°C · Low 10.8°C · 65 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 Avellaneda) is explained once on the Avellaneda year overview and on the Sources, method and limits page.
Quilmes and Berazategui lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.