Best time to visit Portsmouth

Find the best time to visit Portsmouth and plan your perfect trip in 2024/2025. Get holiday inspiration, weather guides, travel advice and find great deals.

Portsmouth by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for New Hampshire

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When is the best time to visit Portsmouth?

The best time to visit Portsmouth is June and July based on the following average weather conditions.

Maximum daytime temperature = 72 - 86°F [remove]
Daily hours of sunshine = 10 hours or more [remove]

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Max Day Temperature (°F)

  • 34°F maximum daytime temperature in January in Portsmouth34
    Jan
  • 36°F maximum daytime temperature in February in Portsmouth36
    Feb
  • 45°F maximum daytime temperature in March in Portsmouth45
    Mar
  • 55°F maximum daytime temperature in April in Portsmouth55
    Apr
  • 66°F maximum daytime temperature in May in Portsmouth66
    May
  • 77°F maximum daytime temperature in June in Portsmouth77
    Jun
  • 82°F maximum daytime temperature in July in Portsmouth82
    Jul
  • 81°F maximum daytime temperature in August in Portsmouth81
    Aug
  • 73°F maximum daytime temperature in September in Portsmouth73
    Sep
  • 63°F maximum daytime temperature in October in Portsmouth63
    Oct
  • 50°F maximum daytime temperature in November in Portsmouth50
    Nov
  • 37°F maximum daytime temperature in December in Portsmouth37
    Dec

Hours of Sunshine (daily)

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Best time to visit

The weather guide for New Hampshire (Portsmouth) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

Metric (°C)  |  Imperial (°F)

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Which is the hottest month in Portsmouth?

The hottest time of year in Portsmouth is normally July. Expect maximum daytime temperatures to reach 82°F with low heat and humidity.

Which month has the most rain in Portsmouth?

In terms of rainfall, November is usually the wettest month in Portsmouth with 4.9 inches on average. There are normally 11 days in November with some rain.

When is it sunniest in Portsmouth?

The sunniest time of year in Portsmouth is normally July with bright sunshine on average for 62% of daylight hours; that's 9 hours of sunshine per day.

When is the sea warmest in Portsmouth?

The sea is usually at its warmest in Portsmouth in August when the water temperature reaches 64°F.

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