Holtsville (NY) Sunshine Hours by Month

In climate discussions, the hours of sunlight reveal much about a location. This page shows the total number of hours of direct sunlight per month and the average hours per day in Holtsville, New York State, United States of America. Long-term data from 1990 to 2020 was used to calculate these averages.

Monthly hours of sunshine

If you're visiting Holtsville, timing is key. In July, you can enjoy up to 271 hours of sunshine, while the shorter days of December provide just 141 hours. The total annual amount of sun is 2544 hours.

Daily hours of sunshine

This means the city can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 9.0 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 4.7 hours of sunlight per day.

Average percent of sunshine

On average the sun shines 63% of the time during the day in August, the highest percentage of any month. December has the lowest percentage at 48%.

Holtsville enjoys an average of 2544 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, London, UK, receives only about 1659 hours of sunshine per year, known for its frequently overcast and rainy skies.

In Seoul, South Korea, there are approximately 2133 hours of sunshine per year, mostly during spring and autumn.

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

December, Holtsville’s wettest month, receives 96 mm (3.8 in) of rainfall and has a maximum daytime temperature of 8°C (46°F). During the driest month November you can expect a temperature of 12°C (54°F).

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