Average Monthly Sunshine in Iselin (NJ)

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

Monthly hours of sunshine

If you're visiting Iselin, timing is key. In July, you can enjoy up to 271 hours of sunshine, while the less sunny days of December provide just 141 hours. The total annual amount of sun is 2540 hours.

Daily hours of sunshine

Seasonal changes in sunshine hours are quite obvious. While July receives considerable daily sunshine with up to 9.0 hours, December marks the darkest time of the year, where sunshine is scarce with only 4.7 hours of sunlight per day.

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

Iselin enjoys an average of 2540 hours of sunshine annually. Let’s compare this with some popular tourist destinations:

In Barcelona, Spain, there are 2530 hours of sunshine annually and is a city that can be visited year-round.

In contrast, Dublin, Ireland, receives only about 1440 hours of sunshine per year, known for its frequently overcast and rainy skies.

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.

Other climate information

December, Iselin’s wettest month, receives 111 mm of rainfall and has a maximum daytime temperature of 8°C. During the driest month November you can expect a temperature of 13°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.