Average annual temperature is 10.9 °C
Absolute maximum temperature: 29.6 °C
Absolute minimum temperature: -4.5 °C
Number of sunny days: 121 days
Number of rainy days: 244 days
Look at detailed online map of Islip
* Weather data for Islip United Kingdom is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 12.4 | 13.6 | 14.2 | 16.8 | 20.3 | 28.3 | 26.1 | 25.4 | 29.6 | 21.9 | 14.3 | 12.3 |
| Average daytime temperature (°C) | 7.5 | 9.3 | 9.6 | 12.2 | 16.6 | 22.5 | 19.7 | 20.4 | 21.6 | 15.7 | 9.9 | 9.0 |
| Average temperature (°C) | 4.6 | 5.7 | 6.8 | 8.3 | 12.4 | 17.4 | 16.1 | 16.3 | 17.0 | 12.2 | 7.0 | 7.0 |
| Average night temperature (°C) | 1.5 | 2.5 | 3.9 | 4.0 | 8.1 | 12.0 | 12.3 | 12.2 | 12.7 | 9.2 | 4.3 | 4.5 |
| Absolute minimum temperature (°C) | -4.5 | -3.6 | -4.0 | -1.6 | 4.7 | 6.6 | 8.0 | 9.3 | 7.6 | 2.3 | -3.0 | -3.3 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 10.0 | 12.0 | 14.0 | 16.0 | 16.0 | 16.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 |
| Daylight mean duration (h) | 8.4 | 10.0 | 11.9 | 13.9 | 15.7 | 16.6 | 16.2 | 14.6 | 12.7 | 10.7 | 8.9 | 7.9 |
| Daylight minimum duration (h) | 7.0 | 9.0 | 10.0 | 12.0 | 14.0 | 16.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 | 7.0 |
| Sunshine mean duration (h) | 4.3 | 4.9 | 4.7 | 7.7 | 10.5 | 12.0 | 9.7 | 10.0 | 7.9 | 6.1 | 4.5 | 2.0 |
| Precipitation (mm) | 57 | 8 | 115 | 76 | 52 | 57 | 104 | 69 | 68 | 135 | 71 | 114 |
| Sunny days | 18 | 19 | 3 | 10 | 13 | 15 | 2 | 5 | 7 | 10 | 11 | 8 |
| Rainy days | 13 | 9 | 28 | 20 | 18 | 15 | 29 | 26 | 23 | 21 | 19 | 23 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Islip during the most sunny months:
Months with the longest average daylight duration in Islip:
The largest precipitation sum in Islip is at