Average Monthly Sunshine in Chelsea (MA)

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

Monthly hours of sunshine

Those who love seasonal contrasts will appreciate Chelsea. Expect long, bright days with 301 hours in May and darker periods with just 141 hours in December. The total annual amount of sun is 2629 hours.

Daily hours of sunshine

This means the city can be enjoyed more throughout the sunniest month of May under a blue sky, with approximately 10.0 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 4.7 hours of sunlight per day.

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

Chelsea enjoys an average of 2629 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, dark winter and rainy skies.

The climate in San Francisco, USA, includes 3072 hours of sunshine annually, thanks to its mild coastal weather.

Melbourne, Australia, has 2380 hours of sunshine annually, with its famous “four seasons in a day” weather pattern.

Other climate information

December, Chelsea’s wettest month, receives 102 mm of snow/rainfall and has a maximum daytime temperature of 6°C. During the driest month September you can expect a temperature of 24°C.

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