Best year time to visit Portsmouth

General weather information about Portsmouth

Average annual temperature is 16.4 °C

Absolute maximum temperature: 34.9 °C

Absolute minimum temperature: -5.7 °C

Number of sunny days: 173

Number of rainy days: 192

Number of snow days:

Average annual precipitation: 1362 mm

Look at detailed online map of Portsmouth

* Weather data for Portsmouth United States is based on climate observations for 2023 year

Portsmouth air temperature forecast for each month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Absolute maximum temperature (°C) 22.4 26.4 27.5 30.4 28.4 31.6 34.6 34.9 33.7 27.5 25.6 21.8
Average daytime temperature (°C) 14.1 15.5 16.1 22.7 22 26.8 31.4 30.1 26.7 22.2 15.6 13.6
Average temperature (°C) 8.9 10.3 10.6 16.5 17.7 21.7 26.3 25.3 22.4 16.8 10.7 8.6
Average night temperature (°C) 5.1 6 6 11.9 13.8 17.6 22.4 21.6 19.1 12.7 6.8 4.6
Absolute minimum temperature (°C) -0.5 -5.7 -0.8 2.3 6.7 10.1 18.9 17.4 14.8 7.5 -3 -1.4

Portsmouth monthly weather indicators

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daylight maximum duration (h) 10.4 11.3 12.6 13.7 14.5 14.7 14.6 14 13 11.8 10.7 9.8
Daylight mean duration (h) 10 10.9 12 13.1 14.1 14.6 14.4 13.5 12.4 11.3 10.2 9.7
Daylight minimum duration (h) 9.7 10.4 11.4 12.6 13.7 14.5 14.1 13 11.9 10.7 9.9 9.6
Sunshine mean duration (h) 6.4 7.9 8.9 10.2 10 10.6 11.6 10.3 9.2 9.2 8.2 6.7
Precipitation (mm) 84 61 66 134 71 259 123 134 135 60 62 173
Sunny days 16 15 13 14 14 9 9 9 12 21 24 17
Rainy days 15 13 18 16 17 21 22 22 18 10 6 14

Portsmouth - weather forecast by months

January February March April May June July August September October November December

Best time to visit Portsmouth:

The best time to visit Portsmouth during the most sunny months:

  • July — 11.6(h)

The largest precipitation sum in Portsmouth is at

  • June — 259(mm)
  • December — 173(mm)

Weather forecast in the closest to Portsmouth admin centers