Waltham (MA) Sunshine Hours by Month
The amount of sunshine is fundamental to comprehending a place's climate. This page shows the total number of hours of direct sunlight per month and the average hours per day in Waltham, Massachusetts, United States of America. The numbers reflect climate data gathered over a 30-year period, from 1990 to 2020.
Monthly hours of sunshine
If you're visiting Waltham, timing is key. In May, you can enjoy up to 301 hours of sunshine, while the shorter days of December provide just 141 hours. The total annual amount of sun is 2665 hours.
Daily hours of sunshine
In Waltham, summer days are longer and more sunny, with daily sunshine hours peaking at 10.0 hours in May. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 4.7 hours per day.
Average percent of sunshine
On average the sun shines 65% of the time during the day in July, the highest percentage of any month. November has the lowest percentage at 49%.
Waltham vs Major Cities: Sunshine Compared
Waltham enjoys an average of 2665 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.
Toronto, Canada, sees around 2071 hours of sunshine each year, with especially long, bright summer days.
Adelaide, Australia, enjoys 2770 hours of sunshine annually, with long, sunny summers.
Related Climate Data for Waltham
December, Waltham’s wettest month, receives 100 mm (3.9 in) of snow/rainfall and has a maximum daytime temperature of 6°C (43°F). During the driest month September you can expect a temperature of 24°C (75°F).
For more detailed insights into the city’s temperatures, check out our Temperature page. To explore more about precipitation patterns, visit our Waltham Precipitation page.
