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Weather in Islip
Average Weather
| Month | Average monthly max temperature | Average monthly min temperature |
| January | 3°C | -1°C |
| February | 4°C | -1°C |
| March | 7°C | 2°C |
| April | 12°C | 7°C |
| May | 17°C | 12°C |
| June | 22°C | 17°C |
| July | 26°C | 21°C |
| August | 26°C | 21°C |
| September | 22°C | 18°C |
| October | 17°C | 13°C |
| November | 11°C | 6°C |
| December | 7°C | 2°C |
14 day forecast
Cheapest month to fly to Islip
Explore price trends for trips to Islip
Showing prices in USD
| Annual Avg. Price | 82 USD |
| November 2025 | 33 USD |
| December 2025 | 33 USD |
| January 2026 | 45 USD |
| February 2026 | 45 USD |
| March 2026 | 49 USD |
| April 2026 | 61 USD |
| May 2026 | 108 USD |
| June 2026 | 108 USD |
| July 2026 | 108 USD |
| August 2026 | 202 USD |
| September 2026 | 108 USD |
Airlines flying to Islip
Best airlines flying to Islip
- Wizz Air
- Cape Air
- Tway Airlines
- Lufthansa
- Hainan Airlines
- Pegasus
- Vueling
- China Airlines
- Iberia Airlines
- Ryanair
- TUI fly Belgium
- Norwegian Air Shuttle
- SAS
- Saudi Arabian Airlines
- Air Canada
- HiSky Europe
- United Airlines
- Aer Lingus
- Royal Air Maroc
- Norse Atlantic Airways










































