When to go · Portsmouth, New Hampshire
Portsmouth, New Hampshire, month by month
The best months for Portsmouth, New Hampshire: May, Jun, Jul, Aug, Sep, Oct. Months to avoid: Jan, Feb.
Month by month
- JanuaryAvoidListed as a month to avoid: Jan–Feb (cold, some sights closed).1 °C / -9 °C, 10 rain days34 °F / 16 °F, 10 rain daysCrowds: Low
- FebruaryAvoidListed as a month to avoid: Jan–Feb (cold, some sights closed).2 °C / -8 °C, 9 rain days36 °F / 18 °F, 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.7 °C / -3 °C, 10 rain days45 °F / 27 °F, 10 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.13 °C / 2 °C, 11 rain days55 °F / 36 °F, 11 rain daysCrowds: Medium · 1 festival or holiday
- MayGreatInside Portsmouth, New Hampshire's best window: May–Oct.19 °C / 8 °C, 12 rain days66 °F / 46 °F, 12 rain daysCrowds: Medium · 1 festival or holiday
- JuneGreatInside Portsmouth, New Hampshire's best window: May–Oct.24 °C / 13 °C, 11 rain days75 °F / 55 °F, 11 rain daysCrowds: High
- JulyGreatInside Portsmouth, New Hampshire's best window: May–Oct.27 °C / 16 °C, 10 rain days81 °F / 61 °F, 10 rain daysCrowds: High · 1 festival or holiday
- AugustGreatInside Portsmouth, New Hampshire's best window: May–Oct.26 °C / 16 °C, 9 rain days79 °F / 61 °F, 9 rain daysCrowds: High
- SeptemberGreatInside Portsmouth, New Hampshire's best window: May–Oct.22 °C / 12 °C, 9 rain days72 °F / 54 °F, 9 rain daysCrowds: Medium · 1 festival or holiday
- OctoberGreatInside Portsmouth, New Hampshire's best window: May–Oct.16 °C / 6 °C, 10 rain days61 °F / 43 °F, 10 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.10 °C / 1 °C, 10 rain days50 °F / 34 °F, 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.4 °C / -6 °C, 11 rain days39 °F / 21 °F, 11 rain daysCrowds: High · 1 festival or holiday