Williamstown (NJ) 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 Williamstown, New Jersey, United States of America. The numbers reflect climate data gathered over a 30-year period, from 1990 to 2020.

Monthly hours of sunshine

Sunshine in Williamstown varies greatly throughout the year. The sunniest month, July, reaches an impressive 275 hours, while December, the darkest month, offers only 140 hours. The total annual amount of sun is 2500 hours.

Daily hours of sunshine

For those who appreciate different seasons, Williamstown serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 9.2 hours of sunshine daily, and embrace the darker days in December, offering only 4.7 hours of daily sunlight.

Average percent of sunshine

On average the sun shines 61% of the time during the day in August, the highest percentage of any month. December has the lowest percentage at 48%.

Williamstown enjoys an average of 2500 hours of sunshine annually. Let’s compare this with some popular tourist destinations:

The city of Rome, Italy, experiences 2470 hours of sunshine annually, adding to its charm as a year-round tourist destination.

In contrast, Juneau, Alaska, receives only about 1523 hours of sunshine per year and is known for its very short days in winter and frequently overcast conditions.

Osaka, Japan, experiences 2010 hours of sunshine annually, with bright, sunny weather in spring and autumn.

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

June, Williamstown’s wettest month, receives 116 mm (4.6 in) of rainfall and has a maximum daytime temperature of 29°C (84°F). During the driest month February you can expect a temperature of 6°C (43°F).

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