Weather in Portsmouth: June
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Average day temperature: | 72.7°F |
| Average night temperature: | 60.3°F | |
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Sea water temperature: | 57.3°F |
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Number of sunny days: | 10 days |
| Day length: | 15.2 - 15.4 hours | |
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Number of rainy days: | 1 day |
| Precipitation totals: | 0.8 in. | |
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forecast
| Portsmouth |
temperature
| Portsmouth |
Air temperature in June, °F
The highest day temperature during June of 2025 was 100°F. At the same time the lowest night temperature was 47°F. Daily and nightly averages during June were 74.9°F and 61.7°F.
Sea water temperature in Portsmouth in June, °F
The average sea water temperature in June of 2025 was 56.5°F. The highest and lowest sea temperatures during the month were 61.3°F and 50.0°F.
Number of sunny, partly cloudy and cloudy days in June is almost equal.
Precipitation total in June, in.
Precipitation total value in Portsmouth in June is 0.8 in. Other months of the year show relatively similar values.
The average wind speed value in June is 7.0 mph It makes June one of the least windy months of the year.
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in June is: 7.7.
Best time for vacation in Portsmouth
Portsmouth on a weather map
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