Portsmouth weather in May 2026

Expect daytime maximum temperatures of 61°F in Portsmouth, England in May based on long-term weather averages. There are 7 hours of sunshine per day on average with 12 days with some rainfall and typically 1.9 inches of rainfall in the month.

  • 61°F maximum daytime temperature in May in Portsmouth61
    61°F max day temperature
  • 7 hours of sunshine per day
  • 12 days with some rainfall in May in Portsmouth12
    12 days with some rainfall
  • 46°F minimum night-time temperature in May in Portsmouth46
    46°F min night temperature
  • 16 hours of daylight per day in May in Portsmouth16
    16 hours of daylight per day
  • No heat & humidity in May in Portsmouth0
    No heat & humidity
  • 1.9 inches monthly rainfall in May in Portsmouth1.9
    1.9 inches of monthly rainfall
  • UV (maximum) index 6 (High) in May in Portsmouth6
    6 (High) UV index
  • 54°F sea temperature in May in Portsmouth54
    54°F sea temperature

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The May weather guide for England (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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More about England

How warm is it in Portsmouth in May?

Daytime temperatures usually reach 63°F in Portsmouth in May, falling to 46°F at night.

How sunny is it in Portsmouth in May?

There are normally 6 hours of bright sunshine each day in Portsmouth in May - that's 39% of daylight hours.

Does it rain in Portsmouth in May?

There are usually 13 days with some rain in Portsmouth in May and the average monthly rainfall is 2.0 inches.

Portsmouth May sunrise & sunset times

Browse the sunrise and sunset times for Portsmouth in May 2026. Select a month to view Portsmouth sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st May 2026 04:38 19:25
Saturday, 16th May 2026 04:14 19:48
Sunday, 31st May 2026 03:57 20:08

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