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Weather in September in Gampaha District

Are you planning a trip a to Gampaha District in September and wondering what kind of weather to expect? This page has all the details you need.

What is the weather like in Gampaha District in September?

Gampaha District is a region in Sri Lanka. September in Gampaha District generally has warm temperatures, with heavy precipitation.

Temperatures

You can expect warm maximum daytime temperatures of around 30°C and nighttime temperatures around 26°C in Negombo. To learn more about the conditions in specific areas of Gampaha District in September, check out the map below. The temperatures mentioned for daytime and nighttime are general averages. However there can be days that surpass these temperatures. So equip yourself with clothing that can handle the potential heat.

To explore the conditions in Gampaha District in more detail, check the map below.

Precipitation

In September, precipitation varies across different areas. From heavy rainfall in Negombo with an average of 245 mm to heavy rainfall in Kapugoda with 292 mm.

Average sunshine

Most areas experience a moderate amount of sunshine, with approximately 189 hours of sunlight expected in Negombo. This makes it neither too gloomy nor overly bright.

For an in-depth overview of the yearly conditions, do visit our Gampaha District climate page.

Where to go in Gampaha District in September

Find more information for the most popular destinations in the Gampaha District on the map below. Click on a destination dot for more details.

Map not visible? Whoops sorry! Please refresh the page.
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).

Select a Month of Interest

Check the conditions for any month of the year.

For a detailed overview over the year and the best time to visit Sri Lanka, check out our Gampaha District's climate page.

Popular destinations

What is the weather like in September for the 5 most popular destinations in Gampaha District?

Negombo

In September Negombo generally has high temperatures with maximum daytime temperatures around 30°C, minimum nighttime temperatures around 26°C and heavy monthly rainfall. So on average the conditions are poor that month.

Negombo
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
30°C 
26°C 
202 hours 
195 mm 
8 days 
30°C 
26°C 
189 hours 
245 mm 
12 days 
poor 
October   >> October
>>  
30°C 
25°C 
202 hours 
338 mm 
15 days 
poor 
Climate in Negombo

Katunayaka

In September Katunayaka generally has very high temperatures with maximum daytime temperatures around 30°C, minimum nighttime temperatures around 25°C and heavy monthly rainfall. So on average the conditions are poor that month.

Katunayaka
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
30°C 
26°C 
202 hours 
203 mm 
9 days 
poor 
30°C 
25°C 
189 hours 
250 mm 
12 days 
poor 
October   >> October
>>  
30°C 
25°C 
202 hours 
345 mm 
15 days 
poor 
Climate in Katunayaka

Ja-Ela

In September Ja-Ela generally has very high temperatures with maximum daytime temperatures around 30°C, minimum nighttime temperatures around 25°C and heavy monthly rainfall. So on average the conditions are poor that month.

Ja-Ela
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
30°C 
26°C 
202 hours 
210 mm 
9 days 
poor 
30°C 
25°C 
189 hours 
256 mm 
13 days 
poor 
October   >> October
>>  
30°C 
25°C 
202 hours 
352 mm 
16 days 
poor 
Climate in Ja-Ela

Seeduwa

In September Seeduwa generally has very high temperatures with maximum daytime temperatures around 30°C, minimum nighttime temperatures around 25°C and heavy monthly rainfall. So on average the conditions are poor that month.

Seeduwa
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
30°C 
26°C 
202 hours 
205 mm 
9 days 
poor 
30°C 
25°C 
189 hours 
252 mm 
12 days 
poor 
October   >> October
>>  
30°C 
25°C 
202 hours 
347 mm 
15 days 
poor 
Climate in Seeduwa

Uswetakeiyawa

In September Uswetakeiyawa generally has very high temperatures with maximum daytime temperatures around 30°C, minimum nighttime temperatures around 25°C and heavy monthly rainfall. So on average the conditions are poor that month.

Uswetakeiyawa
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
30°C 
26°C 
202 hours 
205 mm 
9 days 
poor 
30°C 
25°C 
189 hours 
256 mm 
13 days 
poor 
October   >> October
>>  
30°C 
25°C 
202 hours 
352 mm 
16 days 
poor 
Climate in Uswetakeiyawa

Is your destination not in the list? Have a look at other destinations in Gampaha District, in Sri Lanka.

Is September the best time to visit Gampaha District?

In our view, September might not be the best time to travel to Gampaha District with often poor weather in Negombo.

On average, the best time to visit Gampaha District is in January, February and March with generally pleasant weather in Negombo. On the other hand, the weather in May, June, July, September, October and November tend to be poor.

Interested in more climate information?

We have much more information about the climate in Gampaha District.

Weather and climate has detailed information for every country in the world. Are you going to Sri Lanka? Get detailed 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.