Portsmouth weather in June 2025

Expect 25°C 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.

  • 25°C maximum daytime temperature in June in Portsmouth25
    25°C max day temperature
  • 9 hours of sunshine per day
  • 11 days with some rainfall in June in Portsmouth11
    11 days with some rainfall
  • 11°C minimum night-time temperature in June in Portsmouth11
    11°C 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
  • 78 mm monthly rainfall in June in Portsmouth78
    78 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in June in Portsmouth8
    8 (Very High) UV index
  • 13°C sea temperature in June in Portsmouth13
    13°C 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 / mm)  |  Imperial (°F / inches)

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How hot is it in Portsmouth in June?

Daytime temperatures usually reach 25°C in Portsmouth in June with no heat and humidity, falling to 11°C 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 13°C.

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 78mm.

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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