Weather in Portsmouth: April
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Average day temperature: | 51.0°F |
| Average night temperature: | 40.9°F | |
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Sea water temperature: | 42.7°F |
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Number of sunny days: | 7 days |
| Day length: | 12.8 - 14.1 hours | |
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Number of rainy days: | 3 days |
| Precipitation totals: | 1.3 in. | |
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forecast
| Portsmouth |
temperature
| Portsmouth |
Air temperature in April, °F
The highest day temperature during April of 2025 was 79°F. At the same time the lowest night temperature was 23°F. Daily and nightly averages during April were 53.8°F and 41.5°F.
Sea water temperature in Portsmouth in April, °F
The average sea water temperature in April of 2025 was 41.4°F. The highest and lowest sea temperatures during the month were 45.0°F and 39.9°F.
Mostly all days in April are cloudy but sunny and partly cloudy days are also possible.
Precipitation total in April, in.
Precipitation total value in Portsmouth in April is 1.3 in. Other months of the year show relatively similar values.
The average wind speed value in April is 8.9 mph
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 April is: 5.9.
Best time for vacation in Portsmouth
Portsmouth on a weather map
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