Climate averages 1991–2020
Caen weather
in September.
A mild, moderately wet month: the 4th warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Caen: daytime highs average 19.8°C and nights cool to about 12.4°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 53 mm of rain on roughly 10 days, which makes September a moderately wet month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 39 min on an average September day.
The nearest other city in this atlas is Le Havre (48 km away). In September its highs average 19.0°C, 0.9°C cooler than Caen, with 78 mm of rain.
Among the 57 cities listed in France, Caen ranks joint 46th of 57 for the warmest September highs and joint 23rd of 57 for the driest September (rainfall, lowest first). The mean September high of those 57 cities is 21.3°C; Caen is 1.4°C cooler than that mean.
From September to October, average highs fall by 3.9°C to 15.9°C, and monthly rainfall rises from 53 mm to 65 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
Caen climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.1°C3.3°C | 3.3°C | 59 | 11.5 | 8.79 h |
| February | 8.9°C3.1°C | 3.1°C | 51 | 11.2 | 10.110 h |
| March | 11.6°C4.5°C | 4.5°C | 54 | 11.3 | 11.912 h |
| April | 14.3°C6.2°C | 6.2°C | 56 | 11.7 | 13.714 h |
| May | 17.3°C9.4°C | 9.4°C | 58 | 11.4 | 15.315 h |
| June | 20.4°C12.3°C | 12.3°C | 62 | 10.5 | 16.216 h |
| July | 22.5°C14.3°C | 14.3°C | 55 | 10.8 | 15.816 h |
| August | 22.6°C14.5°C | 14.5°C | 60 | 10.1 | 14.414 h |
| September, selected | 19.8°C12.4°C | 12.4°C | 53 | 9.7 | 12.713 h |
| October | 15.9°C9.9°C | 9.9°C | 65 | 12.3 | 10.811 h |
| November | 11.4°C6.5°C | 6.5°C | 66 | 12.8 | 9.29 h |
| December | 8.5°C4.0°C | 4.0°C | 74 | 13.3 | 8.38 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
- Le Havre in SeptemberFrance · 48 kmHigh 19.0°C · Low 13.4°C · 78 mm rain
- Rouen in SeptemberFrance · 110 kmHigh 19.7°C · Low 12.0°C · 52 mm rain
- Saint Helier in SeptemberJersey · 127 kmHigh 17.5°C · Low 15.1°C · 77 mm rain
- Le Mans in SeptemberFrance · 138 kmHigh 20.8°C · Low 12.2°C · 51 mm rain
- Rennes in SeptemberFrance · 154 kmHigh 20.5°C · Low 12.2°C · 49 mm rain
- Cergy-Pontoise in SeptemberFrance · 178 kmHigh 20.3°C · Low 12.0°C · 44 mm rain
- Saint-Quentin-en-Yvelines in SeptemberFrance · 180 kmHigh 19.9°C · Low 11.3°C · 48 mm rain
- Worthing in SeptemberUnited Kingdom · 181 kmHigh 17.9°C · Low 12.8°C · 66 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 Caen) is explained once on the Caen year overview and on the Sources, method and limits page.