Portsmouth weather in June 2025

Expect 77°F daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Portsmouth in June. Check more long-term weather averages for Portsmouth in June before you book your next holiday to New Hampshire in 2025/2026.

  • 77°F maximum daytime temperature in June in Portsmouth77
    77°F max day temperature
  • 9 hours of sunshine per day
  • 11 days with some rainfall in June in Portsmouth11
    11 days with some rainfall
  • 52°F minimum night-time temperature in June in Portsmouth52
    52°F min night temperature
  • 15 hours of daylight per day in June in Portsmouth15
    15 hours of daylight per day
  • No heat & humidity in June in Portsmouth0
    No heat & humidity
  • 3.1 inches monthly rainfall in June in Portsmouth3.1
    3.1 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in June in Portsmouth8
    8 (Very High) UV index
  • 55°F sea temperature in June in Portsmouth55
    55°F sea temperature

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The June weather guide for New Hampshire (Portsmouth) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C)  |  Imperial (°F)

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How hot is it in Portsmouth in June?

Daytime temperatures usually reach 77°F in Portsmouth in June with no heat and humidity, falling to 52°F at night.

How sunny is it in Portsmouth in June?

There are normally 9 hours of bright sunshine each day in Portsmouth in June - that's 59% of daylight hours.

How warm is the sea around Portsmouth in June?

The average sea temperature around Portsmouth in June is 55°F.

Does it rain in Portsmouth in June?

There are usually 11 days with some rain in Portsmouth in June and the average monthly rainfall is 3.1 inches.

Portsmouth June sunrise & sunset times

Browse the sunrise and sunset times for Portsmouth in June 2025. Select a month to view Portsmouth sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st June 2025 04:06 19:16
Sunday, 15th June 2025 04:03 19:24
Monday, 30th June 2025 04:07 19:26

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