ClimateForecastSeptemberOctober >>

Gampaha weather in September (Gampaha District, Sri Lanka)

What can you expect from the weather in Gampaha during September? Check out this comprehensive weather guide.

Temperatures

In September, Gampaha generally has very high temperatures and heavy rainfall. Throughout the day, temperatures typically settle at around 31°C. But by evening, they drop to around 25°C. Remember, these are typical temperatures, and certain days could be even hotter. Ensure you wear appropriate clothing to handle the warmth.

Precipitation

Gampaha in September falls under the rainy season with heavy rainfall, averaging around 263 mm for the month. Delving into the climate records from the past 30 years, one can predict that nearly 13 days of the month will see rainfall.

Average sunshine

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 Gampaha. January generally stands 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 Gampaha climate page with graphs.

 

Gampaha, monthly averages in September

Min TemperatureMin Temperature 25°C  
Max TemperatureMax Temperature 31°C  
Chance of RainChance of Rain 44%  
PrecipitationPrecipitation 263 mm  
Rainy daysRainy days 13 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 and which places have the best travel 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 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.

What To Do

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

Swimming
7/10
Cycling
7/10
Walking
7/10
Camping
6/10
Outdoor sports
7/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Gampaha.

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.