Portsmouth weather in June 2025

Expect 88°F daytime maximum temperatures in the shade with on average 8 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 Dominica in 2025/2026.

  • 88°F maximum daytime temperature in June in Portsmouth88
    88°F max day temperature
  • 8 hours of sunshine per day
  • 18 days with some rainfall in June in Portsmouth18
    18 days with some rainfall
  • 73°F minimum night-time temperature in June in Portsmouth73
    73°F min night temperature
  • 13 hours of daylight per day in June in Portsmouth13
    13 hours of daylight per day
  • High heat & humidity in June in PortsmouthH
    High heat & humidity
  • 6.8 inches monthly rainfall in June in Portsmouth6.8
    6.8 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in June in Portsmouth11
    11+ (Extreme) UV index
  • 82°F sea temperature in June in Portsmouth82
    82°F sea temperature

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The June weather guide for Dominica (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 88°F in Portsmouth in June with high heat and humidity, falling to 73°F at night.

How sunny is it in Portsmouth in June?

There are normally 8 hours of bright sunshine each day in Portsmouth in June - that's 58% of daylight hours.

How warm is the sea around Portsmouth in June?

The average sea temperature around Portsmouth in June is 82°F.

Does it rain in Portsmouth in June?

There are usually 18 days with some rain in Portsmouth in June and the average monthly rainfall is 6.8 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 05:34 18:34
Sunday, 15th June 2025 05:35 18:38
Monday, 30th June 2025 05:38 18:41

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