Climate averages 1991–2020
Concepción 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 Concepción: daytime highs average 15.4°C and nights cool to about 6.8°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 62 mm of rain on roughly 7 days, which makes September a moderately wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 50 min on an average September day.
The nearest other city in this atlas is San Pedro de la Paz (5 km away). In September its highs average 14.8°C, 0.7°C cooler than Concepción, with 62 mm of rain.
Among the 40 cities listed in Chile, Concepción ranks 29th of 40 for the warmest September highs and joint 21st of 40 for the driest September (rainfall, lowest first). The mean September high of those 40 cities is 17.2°C; Concepción is 1.7°C cooler than that mean.
From September to October, average highs rise by 2.0°C to 17.4°C, and monthly rainfall falls from 62 mm to 43 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
Concepción climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 24.6°C13.7°C | 13.7°C | 5.6 | 1.0 | 14.414 h |
| February | 24.3°C13.6°C | 13.6°C | 11 | 1.6 | 13.513 h |
| March | 22.6°C12.3°C | 12.3°C | 19 | 2.9 | 12.312 h |
| April | 18.8°C9.9°C | 9.9°C | 52 | 5.2 | 11.211 h |
| May | 15.6°C8.3°C | 8.3°C | 135 | 9.9 | 10.210 h |
| June | 13.4°C6.9°C | 6.9°C | 185 | 13.7 | 9.710 h |
| July | 12.8°C5.6°C | 5.6°C | 143 | 12.1 | 9.910 h |
| August | 13.6°C6.0°C | 6.0°C | 122 | 11.2 | 10.711 h |
| September, selected | 15.4°C6.8°C | 6.8°C | 62 | 7.0 | 11.812 h |
| October | 17.4°C8.3°C | 8.3°C | 43 | 6.4 | 13.013 h |
| November | 20.1°C10.3°C | 10.3°C | 21 | 3.2 | 14.114 h |
| December | 22.6°C12.3°C | 12.3°C | 16 | 2.7 | 14.615 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 Pedro de la Paz in SeptemberChile · 5 kmHigh 14.8°C · Low 7.3°C · 62 mm rain
- Chiguayante in SeptemberChile · 11 kmHigh 15.6°C · Low 6.7°C · 84 mm rain
- Talcahuano in SeptemberChile · 13 kmHigh 14.6°C · Low 7.5°C · 62 mm rain
- Coronel in SeptemberChile · 24 kmHigh 15.3°C · Low 7.0°C · 84 mm rain
- Chillán in SeptemberChile · 88 kmHigh 16.3°C · Low 5.4°C · 96 mm rain
- Los Ángeles in SeptemberChile · 94 kmHigh 15.3°C · Low 5.2°C · 94 mm rain
- Villa Mercedes, Chile in SeptemberChile · 115 kmHigh 14.5°C · Low 4.5°C · 145 mm rain
- Talca in SeptemberChile · 200 kmHigh 17.5°C · Low 6.1°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 Concepción) is explained once on the Concepción year overview and on the Sources, method and limits page.
Talcahuano and San Pedro de la Paz lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.