Average monthly water temperature in Dehiwala, Sri Lanka
On this page you find the mean water temperature over the year in Dehiwala (Colombo District), Sri Lanka. Dive into the water temperature trends, highlighting the best times for swimming and other activities.
In Dehiwala, water temperatures are consistently warm throughout the year. The warmest month is January, with an average water temperature of 28°C (82°F).
The coolest month is August, with an average temperature of 26°C (79°F). This makes Dehiwala a year-round destination for swimming and other water-based activities.
Dehiwala Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Dehiwala - and find the best time to visit.
Dehiwala 3-Day Forecast
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Dehiwala climate overview or explore weather in Sri Lanka.
Popular this month
Where to go in September - average daytime high across popular destinations.
Colombo
30°C (86°F) Galle29°C (84°F) Mirissa29°C (84°F) Hikkaduwa29°C (84°F) Negombo30°C (86°F) Kandy
29°C (84°F) Unawatuna29°C (84°F) Nuwara Eliya28°C (82°F) 
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