Average Monthly Sunshine in Holtsville (NY)

The graphs on this page shows the average number of hours per month and per day that Holtsville 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 Holtsville, 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

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.

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

Holtsville 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 Chicago, USA, the annual sunshine averages 2520 hours, contributing to its humid continental climate.

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

Adelaide, Australia, enjoys 2770 hours of sunshine annually, with long, sunny summers.

Other climate information

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