Climate averages 1991–2020
San Rafael weather
in September.
A mild, fairly dry month: the 8th warmest and the 4th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in San Rafael: daytime highs average 19.4°C and nights cool to about 6.3°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 28 mm of rain on roughly 5 days, which makes September a fairly dry month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 51 min on an average September day.
The nearest other city in this atlas is San Martín (171 km away). In September its highs average 21.1°C, 1.7°C warmer than San Rafael, with 11 mm of rain.
Among the 67 cities listed in Argentina, San Rafael ranks 30th of 67 for the warmest September highs and joint 11th of 67 for the driest September (rainfall, lowest first). The mean September high of those 67 cities is 19.4°C; San Rafael is level with that mean.
From September to October, average highs rise by 3.3°C to 22.7°C, and monthly rainfall rises from 28 mm to 60 mm.
The annual picture
September 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 Rafael climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 30.5°C18.3°C | 18.3°C | 45 | 8.8 | 14.214 h |
| February | 28.7°C17.0°C | 17.0°C | 48 | 7.2 | 13.413 h |
| March | 25.7°C14.6°C | 14.6°C | 48 | 6.8 | 12.312 h |
| April | 20.9°C10.1°C | 10.1°C | 42 | 6.0 | 11.211 h |
| May | 17.1°C6.5°C | 6.5°C | 31 | 5.0 | 10.310 h |
| June | 14.6°C2.7°C | 2.7°C | 18 | 3.7 | 9.910 h |
| July | 13.8°C1.5°C | 1.5°C | 16 | 3.2 | 10.110 h |
| August | 16.5°C3.2°C | 3.2°C | 22 | 3.4 | 10.811 h |
| September, selected | 19.4°C6.3°C | 6.3°C | 28 | 4.7 | 11.812 h |
| October | 22.7°C10.0°C | 10.0°C | 60 | 7.6 | 12.913 h |
| November | 26.3°C13.7°C | 13.7°C | 53 | 8.0 | 13.914 h |
| December | 29.3°C16.7°C | 16.7°C | 53 | 8.6 | 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
September in nearby cities
- San Martín in SeptemberArgentina · 171 kmHigh 21.1°C · Low 8.5°C · 11 mm rain
- Mendoza in SeptemberArgentina · 198 kmHigh 18.3°C · Low 6.1°C · 28 mm rain
- Rancagua in SeptemberChile · 226 kmHigh 17.8°C · Low 4.5°C · 81 mm rain
- Puente Alto in SeptemberChile · 235 kmHigh 17.2°C · Low 3.8°C · 72 mm rain
- San Luis in SeptemberArgentina · 237 kmHigh 21.3°C · Low 9.4°C · 30 mm rain
- Paine in SeptemberChile · 239 kmHigh 19.0°C · Low 5.8°C · 57 mm rain
- Peñalolén in SeptemberChile · 240 kmHigh 16.3°C · Low 4.9°C · 72 mm rain
- San Bernardo in SeptemberChile · 246 kmHigh 18.4°C · Low 4.8°C · 55 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 Rafael) is explained once on the San Rafael year overview and on the Sources, method and limits page.