Portsmouth weather in July 2025

Expect 21°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Portsmouth in July. Check more long-term weather averages for Portsmouth in July before you book your next holiday to England in 2025/2026.

21
21°C max day temperature
8
8 hours of sunshine per day
9
9 days with some rainfall
13
13°C min night temperature
16
16 hours of daylight per day
0
No heat & humidity
39
39 mm of monthly rainfall
6
6 (High) UV index
17
17°C sea temperature

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The July 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 / mm) | Imperial (°F / inches)

More about England

How hot is it in Portsmouth in July?

Daytime temperatures usually reach 21°C in Portsmouth in July, falling to 13°C at night.

How sunny is it in Portsmouth in July?

There are normally 8 hours of bright sunshine each day in Portsmouth in July - that's 47% of daylight hours.

How warm is the sea around Portsmouth in July?

The average sea temperature around Portsmouth in July is 17°C.

Does it rain in Portsmouth in July?

There are usually 9 days with some rain in Portsmouth in July and the average monthly rainfall is 39mm.

Portsmouth July sunrise & sunset times

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Date	Sunrise times	Sunset times
Tuesday, 1st July 2025	03:55	20:21
Wednesday, 16th July 2025	04:10	20:11
Thursday, 31st July 2025	04:30	19:51

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