Average annual temperature is 12.5 °C
Absolute maximum temperature: 33.9 °C
Absolute minimum temperature: -4.6 °C
Number of sunny days: 142 days
Number of rainy days: 223 days
Look at detailed online map of Poissy
* Weather data for Poissy 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) | 14.7 | 14.5 | 18.8 | 20.0 | 24.4 | 30.7 | 30.9 | 30.6 | 33.9 | 27.4 | 16.6 | 13.7 |
| Average daytime temperature (°C) | 7.7 | 9.0 | 11.6 | 13.3 | 18.4 | 25.5 | 24.1 | 23.6 | 24.8 | 18.6 | 11.2 | 9.3 |
| Average temperature (°C) | 5.5 | 5.2 | 8.2 | 9.2 | 13.8 | 20.1 | 19.5 | 19.1 | 19.5 | 14.1 | 8.6 | 7.1 |
| Average night temperature (°C) | 2.9 | 1.8 | 4.8 | 4.9 | 9.1 | 14.4 | 14.6 | 14.7 | 14.4 | 10.1 | 6.0 | 4.9 |
| Absolute minimum temperature (°C) | -3.6 | -4.6 | -2.6 | -0.6 | 5.3 | 9.0 | 11.1 | 11.1 | 7.5 | 4.0 | -0.3 | -4.0 |
| 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) | 2.9 | 4.9 | 6.1 | 7.9 | 11.1 | 12.6 | 11.1 | 10.2 | 9.4 | 6.8 | 4.4 | 2.5 |
| Precipitation (mm) | 62 | 6 | 87 | 66 | 55 | 69 | 78 | 128 | 92 | 85 | 105 | 69 |
| Sunny days | 10 | 18 | 7 | 10 | 16 | 16 | 9 | 8 | 19 | 13 | 7 | 9 |
| Rainy days | 21 | 10 | 24 | 20 | 15 | 14 | 22 | 23 | 11 | 18 | 23 | 22 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Poissy during the most sunny months:
Months with the longest average daylight duration in Poissy:
The largest precipitation sum in Poissy is at