Merrillville (IN) Sunshine Hours by Month

To truly understand a climate, we must look at its sunshine. This page shows the total number of hours of direct sunlight per month and the average hours per day in Merrillville, Indiana, United States of America. These averages rely on historical data collected over 30 years, from 1990 to 2020.

Monthly hours of sunshine

If you're visiting Merrillville, timing is key. In July, you can enjoy up to 319 hours of sunshine, while the shorter days of December provide just 107 hours. The total annual amount of sun is 2509 hours.

Daily hours of sunshine

Seasonal changes in sunshine hours are quite obvious in Merrillville. While July receives considerable daily sunshine with up to 10.6 hours, December marks the darkest time of the year, where sunshine is scarce with only 3.6 hours of sunlight per day.

Average percent of sunshine

On average the sun shines 69% of the time during the day in July, the highest percentage of any month. December has the lowest percentage at 37%.

Merrillville enjoys an average of 2509 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.

Vancouver, Canada, receives approximately 1940 hours of sunshine annually.

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

August, Merrillville’s wettest month, receives 110 mm (4.3 in) of rainfall and has a maximum daytime temperature of 28°C (82°F). During the driest month November you can expect a temperature of 10°C (50°F).

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