Portsmouth (NH) Sunshine Hours by Month

When exploring climate, sunlight hours tell an important story. This page shows the total number of hours of direct sunlight per month and the average hours per day in Portsmouth, New Hampshire, United States of America. These averages rely on historical data collected over 30 years, from 1990 to 2020.

Monthly hours of sunshine

Sunshine in Portsmouth varies greatly throughout the year. The sunniest month, July, reaches an impressive 295 hours, while November, the darkest month, offers only 127 hours. The total annual amount of sun is 2512 hours.

Daily hours of sunshine

In Portsmouth, summer days are longer and more sunny, with daily sunshine hours peaking at 9.8 hours in July. As the darker season arrives, the brightness of the sun becomes less. November sees a soft sun for only 4.2 hours per day.

Portsmouth enjoys an average of 2512 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 contrast, Reykjavík, Iceland, receives only about 1330 hours of sunshine per year, known for its frequently overcast and rainy skies.

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

Adelaide, Australia, enjoys 2770 hours of sunshine annually, with long, sunny summers.

June, Portsmouth’s wettest month, receives 110 mm (4.3 in) of rainfall and has a maximum daytime temperature of 23°C (73°F). During the driest month January you can expect a temperature of 1°C (34°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.