Portsmouth Sunshine Hours by Month

Sunshine plays a big role in understanding the climate of a city. This page shows the total number of hours of direct sunlight per month and the average hours per day in Portsmouth, Dominica. The numbers reflect climate data gathered over a 30-year period, from 1990 to 2020.

Monthly hours of sunshine

Portsmouth experiences sunny spells throughout the year. The sunniest month, April, sees up to 245 hours of sunshine, while December, the least sunny month, still provides a respectable 190 hours. The total annual sunshine amounts to 2630 hours.

Daily hours of sunshine

Enjoy up to 8.2 hours of daily sun in April, and experience slightly darker atmosphere in December, with about 6.3 hours of daily sunlight.

Portsmouth enjoys an average of 2630 hours of sunshine annually. Let’s compare this with some popular tourist destinations:

In Lisbon, Portugal, there are approximately 2801 hours of sunshine annually, highlighting its warm and sunny Mediterranean climate.

In contrast, London, UK, receives only about 1659 hours of sunshine per year, known for its frequently overcast and rainy skies.

Boston, USA, enjoys 2629 hours of sunshine annually, with distinct seasons and many bright, sunny days.

In Brisbane, Australia, the annual sunshine averages 2999 hours, making it one of Australia’s sunniest cities.

October, Portsmouth’s wettest month, receives 136 mm (5.4 in) of rainfall and has a maximum daytime temperature of 29°C (84°F). During the driest month March you can expect a temperature of 27°C (81°F).

For more detailed insights into the city’s temperatures, check out our Temperature page. To explore more about precipitation patterns, visit our Portsmouth Precipitation page.