Portsmouth weather averages

Going to Portsmouth? Find the best month to visit Portsmouth based on the weather.

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Check Portsmouth weather averages before you book your next holiday in 2018/2019. Today's maximum temperature in Portsmouth is expected to be 20°C, while the average maximum temperature in September is 18°C.

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More about Portsmouth

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Metric (°C / mm)  |  Imperial (°F / inches)

Portsmouth weather averages: best month

Portsmouth Best month Averages
Warmest July & August 21°C
Sunniest June & July 8 hours per day
Least rain July 9 days
Warmest sea August 18°C

Portsmouth climate guide

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Tropical storm risk: Portsmouth hurricane season

% of month affected by tropical storms
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The Portsmouth tropical storm risk chart above shows the hurricane season.

More about tropical storms

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Portsmouth weather averages by month

Check Portsmouth holiday weather averages for a particular month by selecting from the list below. Monthly weather guides include figures for temperature, rainfall, sunshine hours and sea temperature plus daily sunrise & sunset times.

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Compare Portsmouth weather with the USA

Below the Portsmouth weather chart shows maximum daytime temperature for Portsmouth, England, UK and the USA (Washington). For more weather parameters or to change the destinations shown visit the comparison weather tool.

Maximum daytime temperature (°C)

Portsmouth, England, UK
USA (Washington)
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Metric (°C / mm)  |  Imperial (°F / inches)

Compare more Portsmouth weather >>

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