Dehiwala weather in September (Colombo District, Sri Lanka)
Looking to travel to Dehiwala in September? This guide provides all the details you need.
In September, Dehiwala typically experiences very high temperatures and heavy rainfall. Throughout the daytime, temperatures often hover around 30°C. However, as the sun sets and evening approaches, there's a noticeable cool-down, with temperatures gently dropping to a more temperate 25°C. Remember, these are typical temperatures, and certain days could be even hotter. Ensure you wear appropriate clothing to handle the warmth.
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.
The area enjoys a balanced 189 hours of sunlight. Ensuring it's neither too overcast nor too sunny.
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 in September and which places have the best weather conditions in this month.
perfect weather
pleasant
tolerable
unpleasant
poor
So, what should you wear in Dehiwala in September?
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 in September.
Interested in more climate information?
Weather and Climate 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 climate conditions. Find out where to go with our weather planner.
