Climate averages 1991–2020
San Antonio, Chile weather
in August.
A cool, moderately wet month: the joint 10th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a cool month in San Antonio, Chile: daytime highs average 14.7°C and nights cool to about 7.4°C. By daytime temperature it is the joint 10th warmest of the 12 months.
Expect about 59 mm of rain on roughly 5 days, which makes August a moderately wet month (the 9th 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 Valparaíso (62 km away). In August its highs average 14.9°C, about as warm as San Antonio, Chile, with 57 mm of rain.
Among the 40 cities listed in Chile, San Antonio, Chile ranks 25th of 40 for the warmest August highs and 13th of 40 for the driest August (rainfall, lowest first). The mean August high of those 40 cities is 15.5°C; San Antonio, Chile is 0.9°C cooler than that mean.
From August to September, average highs rise by 1.2°C to 15.8°C, and monthly rainfall falls from 59 mm to 28 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 Antonio, Chile climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 21.6°C14.5°C | 14.5°C | 0.4 | 0.1 | 14.114 h |
| February | 21.4°C14.4°C | 14.4°C | 1.6 | 0.3 | 13.313 h |
| March | 20.9°C13.4°C | 13.4°C | 3.5 | 0.8 | 12.312 h |
| April | 18.9°C11.3°C | 11.3°C | 18 | 2.1 | 11.311 h |
| May | 16.6°C9.6°C | 9.6°C | 61 | 4.7 | 10.410 h |
| June | 14.7°C8.0°C | 8.0°C | 122 | 7.0 | 10.010 h |
| July | 14.0°C6.9°C | 6.9°C | 67 | 5.6 | 10.110 h |
| August, selected | 14.7°C7.4°C | 7.4°C | 59 | 5.1 | 10.911 h |
| September | 15.8°C8.6°C | 8.6°C | 28 | 3.0 | 11.912 h |
| October | 17.3°C10.0°C | 10.0°C | 14 | 1.8 | 12.913 h |
| November | 19.1°C11.7°C | 11.7°C | 3.5 | 0.7 | 13.814 h |
| December | 20.4°C13.2°C | 13.2°C | 2.9 | 0.4 | 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
- Valparaíso in AugustChile · 62 kmHigh 14.9°C · Low 9.8°C · 57 mm rain
- Quilpué in AugustChile · 63 kmHigh 16.2°C · Low 6.8°C · 53 mm rain
- Viña del Mar in AugustChile · 64 kmHigh 16.2°C · Low 7.8°C · 53 mm rain
- Peñaflor in AugustChile · 68 kmHigh 17.0°C · Low 4.1°C · 71 mm rain
- Lampa in AugustChile · 76 kmHigh 17.6°C · Low 6.2°C · 71 mm rain
- Maipú in AugustChile · 79 kmHigh 16.5°C · Low 3.9°C · 81 mm rain
- Paine in AugustChile · 84 kmHigh 17.0°C · Low 3.9°C · 83 mm rain
- San Bernardo in AugustChile · 84 kmHigh 16.3°C · Low 2.7°C · 81 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 Antonio) is explained once on the San Antonio, Chile year overview and on the Sources, method and limits page.