Gampaha Weather and Climate: A Comprehensive Guide
Gampaha has a steady very warm climate throughout the year.
It also has a notably wet climate with much precipitation.
Now, let’s explore all the climate details to give you a full picture.
Average maximum day and minimum night temperature
In Gampaha temperatures are generally consistent throughout the year. Average maximum daytime temperatures range from a very warm 34°C in March, the warmest time of the year, to a very warm 31°C during cooler months like January.
At night, temperatures typically drop to an average of around 23°C during these months. Check out our detailed temperature page for more information.Temperature ranges by month
Precipitation and rainy days
Gampaha experiences significant rainfall throughout the year, averaging 2606 mm of precipitation annually. Significant seasonal changes in precipitation occur throughout the year. During the wetter season, October receives heavy rainfall, averaging 363 mm of precipitation, recorded across 16 rainy days. In contrast, the drier season, January brings less rainfall, with 64 mm over 5 rainy days. For more details, please visit our Gampaha Precipitation page.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
While the amount of sunshine in Gampaha varies throughout the year, all seasons offer their own charm. Enjoy up to 9.2 hours of daily sun in March, and experience slightly darker atmosphere in September, with about 6.3 hours of daily sunlight. Visit our detailed sunshine hours page for more information.Monthly hours of sunshine
Daily hours of sunshine
Average humidity
The relative humidity is high throughout the year in Gampaha.
The city experiences its highest humidity in June, reaching 79%. In February, the humidity drops to its lowest level at 69%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
broken clouds and thunder broken clouds and thunder overcast and thunderForecast for Gampaha
3 m/s
2 m/s
3 m/s
Select a Month of Interest
Check the conditions for any month of the year.
The best time of year to visit Gampaha in Sri Lanka
Gampaha has high temperatures year round ranging between 30°C and 34°C.Other facts from our historical weather data:
March has an average maximum temperature of 34°C and is the hottest month of the year.
The coolest month is January with an average maximum temperature of 31°C.
October tops the wettest month list with 363 mm of rainfall.
January is the driest month with 64 mm of precipitation.
March is the sunniest month with an average of 276 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
