Portsmouth Weather in March

What's the weather like in Portsmouth (Saint John) in March 2023?

The climate in Portsmouth during March can be summarized as hot, humid and damp.

March is in the spring in Portsmouth and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a steamy 29°C (85°F), whilst at night 21°C (70°F) is normal.

Portsmouth weather averages (imperial / metric)
Daytime temperature 29.2°C 84.5°F
Nightly temperature 21.3°C 70.3°F
Average temperature 25.2°C 77.4°F
Daily sunshine 8 hrs
Avg rainfall 110 mm 4.3 ins
Rainy days 15 days
Sea temperature 26.5°C 79.8°F
Humidity 76%
Windspeed 18.7kph 12 mph

On average March is the 3rd driest month of the year in Portsmouth with around 110mm 4.3 inches of rain making it a damp time to visit. This rainfall is typically spread over 15 days, although this may vary considerably.

On the flip side this corresponds to an average of 8 hours of sunshine per day.

March temperatures in Portsmouth

Portsmouth average temperature in March

March rainfall

Portsmouth average rain in March

March hourly sunshine

Portsmouth average rain in March

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Portsmouth in March 2023.

Other monthly averages

Best places to visit in March

UV index Best time to go?

Portsmouth weather stats

Portsmouth weather statistics
Hottest month: July 30.6°C 87.1°F
Driest month: February 95mm 3.7ins
Sunniest month: April 8.6hrs
Coldest month: February 28.3°C 82.9°F
Wettest month: November 301mm 11.9ins
Map showing location of Portsmouth (15.58333, -61.46667)

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