Islip in May
6.8out of 10
Possible, with caveats
Mild: highs around 17°C. Frequent rain: about 11 rainy days.
17°CAvg high
12°CAvg low
11Rainy days (90 mm)
14:16 hDaylight
05:41Sunrise · 19:57 Sunset
Why this score
- Mild: highs around 17°C
- Frequent rain: about 11 rainy days
What to wear and pack
- Layers you can add or remove
- Rain jacket or compact umbrella
How reliable is the forecast?
Rain in May varies a lot between years (±3.1 rainy days), so check the forecast closer to your trip. Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 4°C | -1°C | 97 mm | 10 | – | – | 4.6 |
| February | 4°C | -1°C | 89 mm | 9 | – | – | 4.8 |
| March | 7°C | 2°C | 117 mm | 11 | – | – | 5.0 |
| April | 12°C | 7°C | 96 mm | 11 | – | – | 5.9 |
| May | 17°C | 12°C | 90 mm | 11 | – | – | 6.8 |
| June | 22°C | 18°C | 92 mm | 10 | – | – | 7.7 |
| July | 25°C | 22°C | 84 mm | 10 | – | – | 7.8 |
| August | 25°C | 21°C | 100 mm | 10 | – | – | 7.7 |
| September | 22°C | 18°C | 96 mm | 9 | – | – | 7.8 |
| October | 17°C | 13°C | 113 mm | 10 | – | – | 6.9 |
| November | 12°C | 7°C | 93 mm | 9 | – | – | 6.2 |
| December | 7°C | 3°C | 121 mm | 11 | – | – | 5.1 |
Frequently asked questions
How hot is Islip in May?
Daytime highs average 17°C and nights about 12°C.
When is the best time to visit Islip?
The best months are July, September, June, August.