Climate averages 1991–2020
Clermont-Ferrand weather
in September.
A mild, moderately wet month: the 4th warmest and the joint 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Clermont-Ferrand: daytime highs average 20.1°C and nights cool to about 10.8°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 83 mm of rain on roughly 10 days, which makes September a moderately wet month (the joint 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 35 min on an average September day.
The nearest other city in this atlas is Saint-Étienne (108 km away). In September its highs average 20.2°C, about as warm as Clermont-Ferrand, with 90 mm of rain.
Among the 57 cities listed in France, Clermont-Ferrand ranks joint 41st of 57 for the warmest September highs and 47th of 57 for the driest September (rainfall, lowest first). The mean September high of those 57 cities is 21.3°C; Clermont-Ferrand is 1.1°C cooler than that mean.
From September to October, average highs fall by 4.1°C to 16.0°C, and monthly rainfall falls from 83 mm to 76 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
Clermont-Ferrand climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 6.7°C0.3°C | 0.3°C | 62 | 12.5 | 9.19 h |
| February | 7.7°C0.0°C | 0.0°C | 51 | 11.3 | 10.310 h |
| March | 11.3°C2.3°C | 2.3°C | 55 | 11.6 | 11.912 h |
| April | 14.3°C4.7°C | 4.7°C | 83 | 13.8 | 13.514 h |
| May | 18.0°C8.5°C | 8.5°C | 99 | 14.8 | 14.915 h |
| June | 21.7°C12.1°C | 12.1°C | 84 | 12.5 | 15.716 h |
| July | 24.1°C14.2°C | 14.2°C | 88 | 11.5 | 15.315 h |
| August | 24.3°C14.3°C | 14.3°C | 88 | 11.5 | 14.114 h |
| September, selected | 20.1°C10.8°C | 10.8°C | 83 | 10.3 | 12.613 h |
| October | 16.0°C7.9°C | 7.9°C | 76 | 11.4 | 11.011 h |
| November | 10.3°C3.7°C | 3.7°C | 76 | 13.0 | 9.510 h |
| December | 7.2°C1.2°C | 1.2°C | 62 | 12.3 | 8.79 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
- Saint-Étienne in SeptemberFrance · 108 kmHigh 20.2°C · Low 11.2°C · 90 mm rain
- Lyon in SeptemberFrance · 137 kmHigh 22.1°C · Low 12.9°C · 93 mm rain
- Villeurbanne in SeptemberFrance · 139 kmHigh 21.8°C · Low 12.9°C · 93 mm rain
- Limoges in SeptemberFrance · 143 kmHigh 20.5°C · Low 12.0°C · 78 mm rain
- Grenoble in SeptemberFrance · 216 kmHigh 21.8°C · Low 12.8°C · 111 mm rain
- Dijon in SeptemberFrance · 225 kmHigh 20.8°C · Low 12.0°C · 75 mm rain
- Poitiers in SeptemberFrance · 229 kmHigh 21.7°C · Low 12.6°C · 50 mm rain
- Nîmes in SeptemberFrance · 238 kmHigh 25.1°C · Low 15.3°C · 99 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 Clermont-Ferrand) is explained once on the Clermont-Ferrand year overview and on the Sources, method and limits page.