Portsmouth weather

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The weather guide for Portsmouth, Dominica shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by MeteoBlue. Find out more about our data sources.

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Which is the hottest month in Portsmouth?

The hottest time of year in Portsmouth is normally September. Expect maximum daytime temperatures to reach 31°C with high heat and humidity.

Which month has the most rain in Portsmouth?

In terms of rainfall, November is usually the wettest month in Portsmouth with 300mm on average. There are normally 19 days in November with some rain.

When is it sunniest in Portsmouth?

The sunniest time of year in Portsmouth is normally April with bright sunshine on average for 66% of daylight hours; that's 8 hours of sunshine per day.

When is the sea warmest in Portsmouth?

The sea is usually at its warmest in Portsmouth in September when the water temperature reaches 29°C.

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

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Compare Portsmouth weather with the USA

Below the Portsmouth weather chart shows average maximum daytime temperature for Portsmouth, Dominica and the USA (Washington).

Maximum daytime temperature (°C)

Portsmouth, Dominica
USA (Washington)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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

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Tropical storm risk: Portsmouth hurricane season

% of month affected by tropical storms
0
0
0
0
0
0
<1%
3%
3.9%
1.4%
0
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

The Portsmouth tropical storm risk chart above shows the hurricane season. The chart was processed from data supplied by the US Meteorological Agency (NOAA). Find out more about our data sources.

More about tropical storms

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Where's hot in Dominica right now?

Below are the temperatures expected today at popular destinations in Dominica. Select a destination to compare today's forecast with average weather conditions.

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