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Seeduwa weather in September (Gampaha District, Sri Lanka)

Looking to travel to Seeduwa in September? This guide provides all the details you need.

In September, Seeduwa generally has very high temperatures and heavy rainfall. Anticipate daytime temperatures around 30°C, while night temperatures can drop to 25°C. Bear in mind, these are average temperatures, and it can get even warmer on particular days. Make sure to choose clothing that accommodates the warmth.

Seeduwa in September falls under the rainy season with heavy rainfall, averaging around 252 mm for the month. Rain is expected on roughly 12 days.

The city usually sees around 189 hours of sunlight, indicating a moderately sunny period.

If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Seeduwa. January, February and March generally stand out with the best circumstances. While 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 Seeduwa climate page with graphs.

 

Seeduwa, monthly averages in September

Min TemperatureMin Temperature 25°C  
Max TemperatureMax Temperature 30°C  
Chance of RainChance of Rain 41%  
PrecipitationPrecipitation 252 mm  
Rainy daysRainy days 12 days  
HumidityHumidity 76% *  
SunshineSunshine 189 hours *  
Percentage SunshinePercentage Sunshine *  
* Data from: Colombo, Sri Lanka (25 KM, 15 Miles).

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.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in Seeduwa 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.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in September.

Swimming
7/10
Cycling
7/10
Walking
7/10
Camping
7/10
Outdoor sports
7/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Seeduwa.

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.