Climate averages 1991–2020
San Nicolás de los Arroyos weather
in August.
A mild, moderately wet month: the 10th warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a mild month in San Nicolás de los Arroyos: daytime highs average 17.8°C and nights cool to about 8.6°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 56 mm of rain on roughly 5 days, which makes August a moderately wet month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 53 min on an average August day.
The nearest other city in this atlas is Gobernador Gálvez (52 km away). In August its highs average 18.1°C, about as warm as San Nicolás de los Arroyos, with 53 mm of rain.
Among the 67 cities listed in Argentina, San Nicolás de los Arroyos ranks joint 25th of 67 for the warmest August highs and joint 32nd of 67 for the driest August (rainfall, lowest first). The mean August high of those 67 cities is 17.2°C; San Nicolás de los Arroyos is 0.6°C warmer than that mean.
From August to September, average highs rise by 2.2°C to 20.0°C, and monthly rainfall rises from 56 mm to 67 mm.
The annual picture
August 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 | 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, selected | 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
August in nearby cities
- Gobernador Gálvez in AugustArgentina · 52 kmHigh 18.1°C · Low 8.3°C · 53 mm rain
- Rosario in AugustArgentina · 59 kmHigh 18.1°C · Low 8.1°C · 53 mm rain
- Pergamino in AugustArgentina · 70 kmHigh 17.5°C · Low 7.4°C · 56 mm rain
- Zárate in AugustArgentina · 139 kmHigh 17.2°C · Low 7.5°C · 69 mm rain
- Campana in AugustArgentina · 148 kmHigh 17.2°C · Low 7.3°C · 64 mm rain
- Junín in AugustArgentina · 156 kmHigh 17.2°C · Low 7.0°C · 45 mm rain
- Gualeguaychú in AugustArgentina · 162 kmHigh 17.9°C · Low 8.5°C · 87 mm rain
- Venado Tuerto in AugustArgentina · 169 kmHigh 17.8°C · Low 7.4°C · 36 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.