Dehiwala weather in September (Colombo District, Sri Lanka)
What does the weather outlook for Dehiwala look like in September? Wondering about the weather this month? Our guide has all the details you need.
Temperatures
The month of September in Dehiwala typically includes very high temperatures and heavy rainfall. The temperature during the day can rise to approximately 30°C. At night, it falls to around 25°C. Note that these temperatures are average, but some days may be hotter. Dress in cool, breathable fabrics to stay comfortable in the heat.
Precipitation
Dehiwala in September falls under the rainy season with heavy rainfall, averaging around 263 mm for the month. Rain is expected on roughly 14 days.Average sunshine
The area experiences a moderate amount of sunshine, with approximately 189 hours of sunlight expected. This makes it neither too gloomy nor overly bright.If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Dehiwala. January, February and March generally stand out with the best circumstances. While April, May, June, July, August, September, October and November tend to showcase less optimal conditions.
For an in-depth look at the yearly conditions, visit our specialized Dehiwala climate page with graphs.
Dehiwala, monthly averages in September
Min Temperature
25°C
Max Temperature
30°C
Water Temperature
28°C *
Chance of Rain
45%
Precipitation
263 mm
Rainy days
14 days
Humidity
76% *
Windspeed
7 km/h *
Sunshine
189 hours *
Percentage Sunshine
*
Where to go in Sri Lanka in September
Find out more about the weather in Sri Lanka and which places have the best travel conditions in this month.
perfect weather
pleasant
tolerable
unpleasant
poor
So, what should you wear in this month?
It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. However, there's a good chance of rain, so bring a raincoat just in case. With a water temperature of around 28°C this is a great month to swim so bring your swimwear.What To Do
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Interested in more climate information?
This site provides you with all the information you need about the climate in Dehiwala.
Our site offers climate and forecast data for every country in the world. Are you going to Sri Lanka? On this website you can find historical weather averages for many cities in Sri Lanka. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.
