Koloa (HI) Sunshine Hours by Month

When exploring climate, sunlight hours tell an important story. This page shows the total number of hours of direct sunlight per month and the average hours per day in Koloa, Hawaii, United States of America. These averages rely on historical data collected over 30 years, from 1990 to 2020.

Monthly hours of sunshine

Across the seasons, sunshine hours in Koloa vary. From a high of 263 hours in August, to a low of 161 hours in December, the city offers a balanced mix of sunny and overcast days. The total annual sunshine amounts to 2562 hours.

Daily hours of sunshine

This means you can enjoy sunny spells year-round. August sees up to 8.8 hours of daily sunshine, perfect for a sunny trip. December, the least sunny month, still offers a generous 5.4 hours of sun despite this cloudier / rainier time of the year.

Average percent of sunshine

On average the sun shines 66% of the time during the day in September, the highest percentage of any month. December has the lowest percentage at 49%.

Koloa enjoys an average of 2562 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, Tromsø , Norway, receives only about 1270 hours of sunshine per year, known for the polar night with no sunlight for weeks during winter.

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

Perth, Australia, enjoys 3180 hours of sunshine annually, the highest among major Australian cities.

December, Koloa’s wettest month, receives 46 mm (1.8 in) of rainfall and has a maximum daytime temperature of 25°C (77°F). During the driest month July you can expect a temperature of 27°C (81°F).

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