Climate averages 1991–2020
San Nicolás de los Arroyos weather
in October.
A warm, wet month: the 6th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a warm month in San Nicolás de los Arroyos: daytime highs average 22.7°C and nights cool to about 13.3°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 112 mm of rain on roughly 10 days, which makes October a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 54 min on an average October day.
The nearest other city in this atlas is Gobernador Gálvez (52 km away). In October its highs average 23.1°C, about as warm as San Nicolás de los Arroyos, with 111 mm of rain.
Among the 67 cities listed in Argentina, San Nicolás de los Arroyos ranks joint 27th of 67 for the warmest October highs and 43rd of 67 for the driest October (rainfall, lowest first). The mean October high of those 67 cities is 22.2°C; San Nicolás de los Arroyos is 0.5°C warmer than that mean.
From October to November, average highs rise by 3.2°C to 25.9°C, and monthly rainfall rises from 112 mm to 115 mm.
The annual picture
October 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 | 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, selected | 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
October in nearby cities
- Gobernador Gálvez in OctoberArgentina · 52 kmHigh 23.1°C · Low 13.3°C · 111 mm rain
- Rosario in OctoberArgentina · 59 kmHigh 23.2°C · Low 13.1°C · 111 mm rain
- Pergamino in OctoberArgentina · 70 kmHigh 22.4°C · Low 12.2°C · 125 mm rain
- Zárate in OctoberArgentina · 139 kmHigh 21.8°C · Low 12.1°C · 131 mm rain
- Campana in OctoberArgentina · 148 kmHigh 21.8°C · Low 11.9°C · 128 mm rain
- Junín in OctoberArgentina · 156 kmHigh 21.9°C · Low 11.8°C · 119 mm rain
- Gualeguaychú in OctoberArgentina · 162 kmHigh 22.5°C · Low 13.1°C · 124 mm rain
- Venado Tuerto in OctoberArgentina · 169 kmHigh 22.8°C · Low 12.6°C · 111 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.