When to go · Islip
Islip, month by month
The best months for Islip: May, Jun, Jul, Aug, Sep, Oct. Months to avoid: Jan, Feb.
Month by month
- JanuaryAvoidListed as a month to avoid: Jan–Feb (cold, limited ferry service).4 °C (39 °F) / -3 °C (27 °F), 10 rain days39 °F (4 °C) / 27 °F (-3 °C), 10 rain daysCrowds: Low
- FebruaryAvoidListed as a month to avoid: Jan–Feb (cold, limited ferry service).5 °C (41 °F) / -2 °C (28 °F), 9 rain days41 °F (5 °C) / 28 °F (-2 °C), 9 rain daysCrowds: Low · 1 festival or holiday
- MarchGoodOutside the best window (May–Oct). Across United States: Spring break fills Florida beaches and parks; the desert parks come into season.10 °C (50 °F) / 2 °C (36 °F), 9 rain days50 °F (10 °C) / 36 °F (2 °C), 9 rain daysCrowds: Medium · 2 festivals or holidays
- AprilGoodOutside the best window (May–Oct). Across United States: Good month for the Southwest, Washington cherry blossoms, the South; mountain roads still closed.16 °C (61 °F) / 7 °C (45 °F), 8 rain days61 °F (16 °C) / 45 °F (7 °C), 8 rain daysCrowds: Medium · 1 festival or holiday
- MayGreatInside Islip's best window: May–Oct.22 °C (72 °F) / 13 °C (55 °F), 7 rain days72 °F (22 °C) / 55 °F (13 °C), 7 rain daysCrowds: Medium · 1 festival or holiday
- JuneGreatInside Islip's best window: May–Oct.27 °C (81 °F) / 18 °C (64 °F), 6 rain days81 °F (27 °C) / 64 °F (18 °C), 6 rain daysCrowds: High
- JulyGreatInside Islip's best window: May–Oct.30 °C (86 °F) / 21 °C (70 °F), 5 rain days86 °F (30 °C) / 70 °F (21 °C), 5 rain daysCrowds: High · 1 festival or holiday
- AugustGreatInside Islip's best window: May–Oct.29 °C (84 °F) / 20 °C (68 °F), 6 rain days84 °F (29 °C) / 68 °F (20 °C), 6 rain daysCrowds: High
- SeptemberGreatInside Islip's best window: May–Oct.25 °C (77 °F) / 16 °C (61 °F), 7 rain days77 °F (25 °C) / 61 °F (16 °C), 7 rain daysCrowds: Medium · 1 festival or holiday
- OctoberGreatInside Islip's best window: May–Oct.19 °C (66 °F) / 10 °C (50 °F), 9 rain days66 °F (19 °C) / 50 °F (10 °C), 9 rain daysCrowds: Medium
- NovemberMixedOutside the best window (May–Oct). Across United States: Quiet between holidays; Thanksgiving week is the busiest travel period of the year.13 °C (55 °F) / 5 °C (41 °F), 10 rain days55 °F (13 °C) / 41 °F (5 °C), 10 rain daysCrowds: Medium · 1 festival or holiday
- DecemberMixedOutside the best window (May–Oct). Across United States: Holiday lights in New York, ski season opens; flights and hotels peak around Christmas and New Year.7 °C (45 °F) / -1 °C (30 °F), 11 rain days45 °F (7 °C) / 30 °F (-1 °C), 11 rain daysCrowds: High · 1 festival or holiday
Compare two months
Weather, crowds and prices for any two months in Islip, side by side.
Verdict
May: Great
Jun: Great
Daytime high
May: 22 °C (72 °F)72 °F (22 °C)
Jun: 27 °C (81 °F)81 °F (27 °C)
Night low
May: 13 °C (55 °F)55 °F (13 °C)
Jun: 18 °C (64 °F)64 °F (18 °C)
Rain days
May: 7
Jun: 6 (better)
Crowds
May: Medium
Jun: High
Prices
May: Medium
Jun: High
Festivals listed
May: 1
Jun: 0
May: Inside Islip's best window: May–Oct.
June: Inside Islip's best window: May–Oct.
Islip: figures are long-term averages from this guide, not a forecast.