Average Monthly Sunshine in Portsmouth

The graphs on this page shows the average number of hours per month and per day that Portsmouth receives direct sunlight. The numbers are calculated over a 30-year period to provide a reliable average.

Monthly hours of sunshine

Across the seasons, sunshine hours in Portsmouth vary. From a high of 245 hours in April, to a low of 190 hours in December, the city offers a balanced mix of sunny and overcast days. The total annual sunshine amounts to 2630 hours.

Daily hours of sunshine

This means you can enjoy sunny spells year-round. April sees up to 8.2 hours of daily sunshine, perfect for a sunny trip. December, the least sunny month, still offers a generous 6.3 hours of sun despite this cloudier / rainier time of the year.

Portsmouth’s total hours of sunshine compared to other major cities

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

Athens, Greece, enjoys 2769 hours of sunshine each year, making it one of the sunniest destinations in the Mediterranean region.

In Chicago, USA, the annual sunshine averages 2520 hours, contributing to its humid continental climate.

Oslo, Norway, receives approximately 1690 hours of sunshine annually.

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

Other climate information

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

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.