The highest day temperature in February 2026 was 48°F. The lowest night temperature was -3°F. The average values for day and night temperatures during February were 29.9°F и 16.2°F respectivly.

The average sea surface temperature in February 2026 for Portsmouth was 35.3°F. The maximum and minimum values were 32.6°F and 37.4°F respectively.

You can expect various weather conditions during February. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in February for Portsmouth is 0.8 in. It makes february one of the least rainy months of the year.

The average wind speed in February is 9.3 mph.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Portsmouth in February is 5.7 hours.