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Portsmouth in May
The weather in May
In May, Portsmouth averages daytime highs of 17° and night-time lows of 9° — mild weather by day. Expect around 50 mm of precipitation spread over about 11 wet days, with average cloud cover near 39%.
Days are 3.4° warmer than in April on average, and June is warmer again by about 2.8°. The sea averages 11°, too cold for most swimmers.
May scores 68/100 — good conditions for sightseeing — and ranks 5th of the twelve months for Portsmouth. For the most comfortable weather, consider June, August and September instead.
Around the middle of the month the sun rises at 05:16 and sets at 20:46 local time, giving 15 h 30 min of daylight. Days lengthen by 84 minutes over the month.
Why 68/100?
How the score for May is builtBeach score this month: 19/100 (adds sea temperature and heat).
Comfort peaks for daytime highs between 18° and 25°C (64–77°F).
Festivals in the region in May
- Cooper's Hill Cheese-Rolling and WakeTraditional festivalBrockworth
- Chelsea Flower ShowArts festivalCity of Westminster
- Brighton FestivalArts festivalBrighton
- Lustleigh May DayTraditional festivalLustleigh
Only the month is given: the exact dates change from year to year.
Around Portsmouth this month
United Kingdom's best in May
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Portsmouth in May: quick answers
Is May a good time to visit Portsmouth?
May scores 68/100 for Portsmouth, which we rate as good. Average highs are 17°C with 11 wet days.
How warm is Portsmouth in May?
Daytime highs average 17°C and night-time lows 9°C in May.
Does it rain a lot in Portsmouth in May?
Portsmouth receives about 50 mm of precipitation in May, falling on around 11 days.
Can you swim in Portsmouth in May?
The sea averages 11°C in May, cold for most swimmers.