Average Monthly Sunshine in Gampaha

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

Monthly hours of sunshine

While the amount of sunshine in Gampaha changes moderately throughout the year, the annual total remains impressive at around 2623 hours. Expect slightly brighter days in March and a subtle dip in September.

Daily hours of sunshine

This means you can enjoy sunny spells year-round. March sees up to 9.2 hours of daily sunshine, perfect for a sunny trip. September, the least sunny month, still offers a generous 6.3 hours of sun despite this cloudier / rainier time of the year.

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

Gampaha enjoys an average of 2623 hours of sunshine annually. Let’s compare this with some popular tourist destinations:

In Lisbon, Portugal, there are approximately 2801 hours of sunshine annually, highlighting its warm and sunny Mediterranean climate.

In contrast, Juneau, Alaska, receives only about 1523 hours of sunshine per year and is known for its very short days in winter and frequently overcast conditions.

Boston, USA, enjoys 2629 hours of sunshine annually, with distinct seasons and many bright, sunny days.

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

Other climate information

October, Gampaha’s wettest month, receives 99 mm of rainfall and has a maximum daytime temperature of 31°C. During the driest month January you can expect a temperature of 33°C.

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