Average annual temperature is 12.8 °C
Absolute maximum temperature: 34.7 °C
Absolute minimum temperature: -4.6 °C
Number of sunny days: 134 days
Number of rainy days: 231 days
Look at detailed online map of Rosny-sur-Seine
* Weather data for Rosny-sur-Seine France is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 14.8 | 14.9 | 19.1 | 20.1 | 24.5 | 31.0 | 31.8 | 31.7 | 34.7 | 28.1 | 17.0 | 14.1 |
| Average daytime temperature (°C) | 8.2 | 9.4 | 12.0 | 13.6 | 18.6 | 25.7 | 24.6 | 23.8 | 25.2 | 18.9 | 11.6 | 9.7 |
| Average temperature (°C) | 5.8 | 5.5 | 8.5 | 9.5 | 14.0 | 20.3 | 19.7 | 19.3 | 19.7 | 14.3 | 8.8 | 7.4 |
| Average night temperature (°C) | 3.3 | 2.1 | 5.1 | 5.4 | 9.3 | 14.6 | 14.8 | 15.0 | 14.7 | 10.3 | 6.2 | 5.1 |
| Absolute minimum temperature (°C) | -2.6 | -4.6 | -2.3 | -0.7 | 5.5 | 9.2 | 10.9 | 11.6 | 7.6 | 4.3 | -0.7 | -3.5 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 10.0 | 12.0 | 14.0 | 15.0 | 16.0 | 16.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 |
| Daylight mean duration (h) | 8.8 | 10.2 | 11.9 | 13.7 | 15.3 | 16.1 | 15.7 | 14.3 | 12.6 | 10.8 | 9.2 | 8.3 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 10.0 | 12.0 | 14.0 | 15.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 3.1 | 5.3 | 6.3 | 7.9 | 11.1 | 12.6 | 11.3 | 10.1 | 9.6 | 6.9 | 4.6 | 2.8 |
| Precipitation (mm) | 59 | 2 | 91 | 73 | 65 | 45 | 85 | 130 | 74 | 82 | 104 | 67 |
| Sunny days | 10 | 20 | 4 | 11 | 16 | 18 | 8 | 7 | 15 | 13 | 3 | 9 |
| Rainy days | 21 | 8 | 27 | 19 | 15 | 12 | 23 | 24 | 15 | 18 | 27 | 22 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Rosny-sur-Seine during the most sunny months:
Months with the longest average daylight duration in Rosny-sur-Seine:
The largest precipitation sum in Rosny-sur-Seine is at