Climate averages 1991–2020
Besançon weather
in September.
A mild, wet month: the 4th warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Besançon: daytime highs average 20.2°C and nights cool to about 12.0°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 93 mm of rain on roughly 11 days, which makes September a wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 37 min on an average September day.
The nearest other city in this atlas is Dijon (76 km away). In September its highs average 20.8°C, 0.5°C warmer than Besançon, with 75 mm of rain.
Among the 57 cities listed in France, Besançon ranks joint 39th of 57 for the warmest September highs and joint 50th of 57 for the driest September (rainfall, lowest first). The mean September high of those 57 cities is 21.3°C; Besançon is 1.0°C cooler than that mean.
From September to October, average highs fall by 4.3°C to 15.9°C, and monthly rainfall rises from 93 mm to 105 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
Besançon climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 6.1°C0.1°C | 0.1°C | 108 | 13.6 | 8.99 h |
| February | 7.3°C0.1°C | 0.1°C | 96 | 12.5 | 10.210 h |
| March | 11.2°C2.7°C | 2.7°C | 95 | 12.9 | 11.912 h |
| April | 14.9°C5.7°C | 5.7°C | 88 | 12.8 | 13.614 h |
| May | 18.5°C9.7°C | 9.7°C | 110 | 14.2 | 15.115 h |
| June | 22.2°C13.3°C | 13.3°C | 85 | 12.6 | 15.916 h |
| July | 24.7°C15.4°C | 15.4°C | 76 | 11.9 | 15.516 h |
| August | 24.7°C15.5°C | 15.5°C | 78 | 10.6 | 14.214 h |
| September, selected | 20.2°C12.0°C | 12.0°C | 93 | 11.2 | 12.613 h |
| October | 15.9°C8.6°C | 8.6°C | 105 | 12.4 | 10.911 h |
| November | 10.0°C3.9°C | 3.9°C | 115 | 13.7 | 9.49 h |
| December | 6.6°C1.2°C | 1.2°C | 124 | 15.2 | 8.69 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
- Dijon in SeptemberFrance · 76 kmHigh 20.8°C · Low 12.0°C · 75 mm rain
- Lausanne in SeptemberSwitzerland · 94 kmHigh 18.8°C · Low 13.2°C · 108 mm rain
- Bern in SeptemberSwitzerland · 113 kmHigh 17.7°C · Low 9.6°C · 88 mm rain
- Mulhouse in SeptemberFrance · 113 kmHigh 19.7°C · Low 11.2°C · 74 mm rain
- Geneva in SeptemberSwitzerland · 117 kmHigh 19.8°C · Low 11.6°C · 109 mm rain
- Basel in SeptemberSwitzerland · 122 kmHigh 20.1°C · Low 10.8°C · 95 mm rain
- Nancy in SeptemberFrance · 160 kmHigh 19.8°C · Low 11.4°C · 71 mm rain
- Freiburg in SeptemberGermany · 161 kmHigh 20.0°C · Low 11.8°C · 77 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 Besançon) is explained once on the Besançon year overview and on the Sources, method and limits page.