Portsmouth Average Yearly Weather

Typically the weather in Portsmouth is usually around 15 throughout the year.

Weather information and stats show April is hottest with January is the coldest with temperatures varying by 13. Temperatures bring about 16 in Spring (March, April and May) , 20 during Summer (June – Aug) and 16 throughout Autumn and 8 in Winter (Dec – Feb) .

MonthDegrees Celsius
January8
February8
March11
April21
May17
June19
July21
August21
September19
October16
November12
December9


When is the best time to go to Portsmouth?

We have collated several historical weather facts and data to help you determine when the best time to visit Portsmouth

  • Typical Average Daily Temperature: 15
  • Typical Hottest Month: April
  • Typical Coldest Month: January
  • Average Spring Temperature: 16
  • Average Summer Temperature: 20
  • Average Autumn Temperature: 16
  • Average Winter Temperature: 8