Climate averages 1991–2020
San Nicolás de los Arroyos weather
in May.
A mild, moderately wet month: the 9th warmest and the 4th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in San Nicolás de los Arroyos: daytime highs average 18.7°C and nights cool to about 11.5°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 66 mm of rain on roughly 6 days, which makes May a moderately wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 26 min on an average May day.
The nearest other city in this atlas is Gobernador Gálvez (52 km away). In May its highs average 18.8°C, about as warm as San Nicolás de los Arroyos, with 66 mm of rain.
Among the 67 cities listed in Argentina, San Nicolás de los Arroyos ranks joint 22nd of 67 for the warmest May highs and joint 46th of 67 for the driest May (rainfall, lowest first). The mean May high of those 67 cities is 18.0°C; San Nicolás de los Arroyos is 0.7°C warmer than that mean.
From May to June, average highs fall by 2.8°C to 15.8°C, and monthly rainfall falls from 66 mm to 44 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
San Nicolás de los Arroyos climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.7°C20.3°C | 20.3°C | 103 | 8.2 | 14.114 h |
| February | 28.1°C19.5°C | 19.5°C | 109 | 8.1 | 13.313 h |
| March | 26.3°C17.8°C | 17.8°C | 117 | 7.4 | 12.312 h |
| April | 22.4°C14.5°C | 14.5°C | 106 | 8.1 | 11.311 h |
| May, selected | 18.7°C11.5°C | 11.5°C | 66 | 6.0 | 10.410 h |
| June | 15.8°C8.7°C | 8.7°C | 44 | 5.2 | 10.010 h |
| July | 15.1°C7.4°C | 7.4°C | 42 | 5.1 | 10.210 h |
| August | 17.8°C8.6°C | 8.6°C | 56 | 5.0 | 10.911 h |
| September | 20.0°C10.4°C | 10.4°C | 67 | 6.3 | 11.912 h |
| October | 22.7°C13.3°C | 13.3°C | 112 | 9.7 | 12.913 h |
| November | 25.9°C16.1°C | 16.1°C | 115 | 7.6 | 13.814 h |
| December | 28.4°C18.6°C | 18.6°C | 108 | 8.6 | 14.314 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
- Gobernador Gálvez in MayArgentina · 52 kmHigh 18.8°C · Low 11.3°C · 66 mm rain
- Rosario in MayArgentina · 59 kmHigh 18.8°C · Low 11.1°C · 66 mm rain
- Pergamino in MayArgentina · 70 kmHigh 18.5°C · Low 10.2°C · 66 mm rain
- Zárate in MayArgentina · 139 kmHigh 18.2°C · Low 10.1°C · 70 mm rain
- Campana in MayArgentina · 148 kmHigh 18.3°C · Low 9.9°C · 68 mm rain
- Junín in MayArgentina · 156 kmHigh 18.1°C · Low 9.8°C · 62 mm rain
- Gualeguaychú in MayArgentina · 162 kmHigh 18.9°C · Low 11.1°C · 80 mm rain
- Venado Tuerto in MayArgentina · 169 kmHigh 18.5°C · Low 10.2°C · 59 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 San Nicolás de los Arroyos) is explained once on the San Nicolás de los Arroyos year overview and on the Sources, method and limits page.