Portsmouth weather in June 2025

Expect 77°F 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.

77
77°F max day temperature
9
9 hours of sunshine per day
11
11 days with some rainfall
52
52°F min night temperature
15
15 hours of daylight per day
0
No heat & humidity
3.1
3.1 inches of monthly rainfall
8
8 (Very High) UV index
55
55°F 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) | Imperial (°F)

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How hot is it in Portsmouth in June?

Daytime temperatures usually reach 77°F in Portsmouth in June with no heat and humidity, falling to 52°F 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 55°F.

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 3.1 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.

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

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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New Hampshire - quick facts
Flight time^✝	11.5 hours
Time difference	UK -5 hours
Language(s)	English
Currency	US Dollar
Electricity	A + B plug (120V)
Driving side	Right
Visa^✝	Yes
Why visit?	Nature
Tourist info	New Hampshire Division of Travel & Tourism Development