Climate averages 1991–2020
San Rafael weather
in May.
A mild, fairly dry month: the 9th warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in San Rafael: daytime highs average 17.1°C and nights cool to about 6.5°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 31 mm of rain on roughly 5 days, which makes May a fairly dry month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 20 min on an average May day.
The nearest other city in this atlas is San Martín (171 km away). In May its highs average 17.8°C, 0.7°C warmer than San Rafael, with 12 mm of rain.
Among the 67 cities listed in Argentina, San Rafael ranks joint 49th of 67 for the warmest May highs and joint 15th of 67 for the driest May (rainfall, lowest first). The mean May high of those 67 cities is 18.0°C; San Rafael is 0.9°C cooler than that mean.
From May to June, average highs fall by 2.5°C to 14.6°C, and monthly rainfall falls from 31 mm to 18 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 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, selected | 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 | 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
May in nearby cities
- San Martín in MayArgentina · 171 kmHigh 17.8°C · Low 8.1°C · 12 mm rain
- Mendoza in MayArgentina · 198 kmHigh 15.5°C · Low 6.4°C · 30 mm rain
- Rancagua in MayChile · 226 kmHigh 18.4°C · Low 5.4°C · 99 mm rain
- Puente Alto in MayChile · 235 kmHigh 17.9°C · Low 5.0°C · 79 mm rain
- San Luis in MayArgentina · 237 kmHigh 18.6°C · Low 9.1°C · 25 mm rain
- Paine in MayChile · 239 kmHigh 19.8°C · Low 6.8°C · 70 mm rain
- Peñalolén in MayChile · 240 kmHigh 17.2°C · Low 6.0°C · 79 mm rain
- San Bernardo in MayChile · 246 kmHigh 18.9°C · Low 5.8°C · 62 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.