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Average Monthly Sunshine in Williamstown (NJ)

The graphs on this page shows the average number of hours per month and per day that Williamstown 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 Williamstown. Expect long, bright days with 275 hours in July and darker periods with just 140 hours in December. The total annual amount of sun is 2500 hours.

Daily hours of sunshine


Summer days are longer and more sunny, with daily sunshine hours peaking at 9.2 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 4.7 hours.

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

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

Seville, Spain, enjoys an impressive 2920 hours of sunshine per year, making it an ideal destination even in winter.

In contrast, London, UK, receives only about 1659 hours of sunshine per year, known for its frequently overcast and rainy skies.

Meanwhile, Buenos Aires, Argentina, enjoys a humid subtropical climate with 2520 hours of sunshine annually.

In Tokyo, Japan, the average annual sunshine is 1930 hours, with sunny periods between rainy seasons.

Other climate information

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


Forecast: is it sunny in Williamstown (NJ)?

Sun   Dec 22
-3°C | -10°C
N 5 m/s
clear and no rain

clear and no rain

Mon   Dec 23
1°C | -11°C
S 2 m/s
partly cloudy and no rain

partly cloudy and no rain

Tue   Dec 24
6°C | -4°C
SW 3 m/s
1.5 mm
partly cloudy and snow

partly cloudy and snow

Interested in more climate information?

This site provides you with all the information you need about the climate in Williamstown.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.