Climate averages 1991–2020
Colina weather
in September.
A mild, moderately wet month: the 9th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Colina: daytime highs average 18.8°C and nights cool to about 7.8°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 77 mm of rain on roughly 10 days, which makes September a moderately wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 52 min on an average September day.
The nearest other city in this atlas is Quilicura (19 km away). In September its highs average 18.0°C, 0.8°C cooler than Colina, with 77 mm of rain.
Among the 40 cities listed in Chile, Colina ranks 11th of 40 for the warmest September highs and joint 28th of 40 for the driest September (rainfall, lowest first). The mean September high of those 40 cities is 17.2°C; Colina is 1.6°C warmer than that mean.
From September to October, average highs rise by 2.6°C to 21.4°C, and monthly rainfall falls from 77 mm to 59 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
Colina climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.7°C18.3°C | 18.3°C | 7.7 | 2.0 | 14.114 h |
| February | 29.3°C18.1°C | 18.1°C | 8.9 | 1.8 | 13.313 h |
| March | 27.7°C16.9°C | 16.9°C | 14 | 1.9 | 12.312 h |
| April | 23.5°C12.8°C | 12.8°C | 38 | 3.8 | 11.311 h |
| May | 19.7°C8.8°C | 8.8°C | 81 | 7.1 | 10.410 h |
| June | 16.5°C5.8°C | 5.8°C | 116 | 8.0 | 10.010 h |
| July | 15.6°C4.8°C | 4.8°C | 96 | 8.3 | 10.210 h |
| August | 16.9°C5.9°C | 5.9°C | 99 | 9.2 | 10.911 h |
| September, selected | 18.8°C7.8°C | 7.8°C | 77 | 10.1 | 11.912 h |
| October | 21.4°C10.4°C | 10.4°C | 59 | 8.5 | 12.913 h |
| November | 24.9°C13.5°C | 13.5°C | 28 | 4.7 | 13.814 h |
| December | 27.9°C16.3°C | 16.3°C | 13 | 2.2 | 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
September in nearby cities
- Quilicura in SeptemberChile · 19 kmHigh 18.0°C · Low 6.4°C · 77 mm rain
- Lampa in SeptemberChile · 21 kmHigh 19.5°C · Low 8.1°C · 39 mm rain
- Santiago in SeptemberChile · 28 kmHigh 17.6°C · Low 5.0°C · 55 mm rain
- Peñalolén in SeptemberChile · 32 kmHigh 16.3°C · Low 4.9°C · 72 mm rain
- Maipú in SeptemberChile · 35 kmHigh 18.4°C · Low 5.9°C · 55 mm rain
- San Bernardo in SeptemberChile · 43 kmHigh 18.4°C · Low 4.8°C · 55 mm rain
- Puente Alto in SeptemberChile · 46 kmHigh 17.2°C · Low 3.8°C · 72 mm rain
- Peñaflor in SeptemberChile · 48 kmHigh 19.0°C · Low 6.2°C · 41 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 Colina) is explained once on the Colina year overview and on the Sources, method and limits page.
Quilicura lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.