Gampaha District Weather in August

Average temperatures, rainfall, sunshine and the best places to visit in Gampaha District, Sri Lanka in August.

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Negombo Katunayaka Ja-Ela Seeduwa

Planning a journey to Gampaha District, Sri Lanka this August and curious over the weather conditions to await? Your essential details are found on this page, answering your query:

What to Expect in Gampaha District in August

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

Temperatures

You can expect warm maximum daytime temperatures of around 30°C (86°F) and nighttime temperatures around 26°C (79°F) in Negombo. The temperatures cited for both day and night represent usual averages, but it's possible some days could be hotter. It's advisable to dress accordingly to handle the heat.

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

Precipitation

In August, precipitation varies across different areas. From heavy rainfall in Negombo with an average of 195 mm (7.7 in) to heavy rainfall in Kapugoda with 265 mm (10 in).

Average sunshine

Sunshine is generally plentiful throughout many areas. Negombo enjoys about 202 hours of sunlight, ideal for those seeking sunny weather.

Explore Gampaha District by month

Pick a month to see the average temperature, rainfall and sunshine in Gampaha District — and find the best time to visit. (based on Negombo)

January31°C (88°F) February32°C (90°F) March33°C (91°F) April32°C (90°F) May31°C (88°F) June30°C (86°F) This monthJuly30°C (86°F) August30°C (86°F) September30°C (86°F) October30°C (86°F) November30°C (86°F) December31°C (88°F)
Best Time to Visit Gampaha District →

Best Places to Visit in Gampaha District in August

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Gampaha District.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Gampaha District

What is the weather like in August for some of the most popular destinations in Gampaha District, Sri Lanka?

Temperature range in Gampaha District (August)

Precipitation variation in Gampaha District (August)

Negombo

In August Negombo generally has high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 26°C (79°F) and heavy monthly rainfall. So on average the conditions are unpleasant that month.

« July
August
September »
July
August
September
Max temperature
30°C (86°F)
30°C (86°F)
30°C (86°F)
Min temperature
26°C (79°F)
26°C (79°F)
26°C (79°F)
Monthly sun hours
202 hours
202 hours
189 hours
Monthly rainfall
209 mm (8.2 in)
195 mm (7.7 in)
245 mm (9.6 in)
Monthly rainy days
9 days
8 days
12 days
Weather conditions
poor
unpleasant
poor
Climate in Negombo →

Katunayaka

In August Katunayaka generally has very high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 26°C (79°F) and heavy monthly rainfall. So on average the conditions are poor that month.

« July
August
September »
July
August
September
Max temperature
30°C (86°F)
30°C (86°F)
30°C (86°F)
Min temperature
26°C (79°F)
26°C (79°F)
25°C (77°F)
Monthly sun hours
202 hours
202 hours
189 hours
Monthly rainfall
220 mm (8.7 in)
203 mm (8 in)
250 mm (9.8 in)
Monthly rainy days
9 days
9 days
12 days
Weather conditions
poor
poor
poor
Climate in Katunayaka →

Ja-Ela

In August Ja-Ela generally has very high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 26°C (79°F) and heavy monthly rainfall. So on average the conditions are poor that month.

« July
August
September »
July
August
September
Max temperature
30°C (86°F)
30°C (86°F)
30°C (86°F)
Min temperature
26°C (79°F)
26°C (79°F)
25°C (77°F)
Monthly sun hours
202 hours
202 hours
189 hours
Monthly rainfall
228 mm (9 in)
210 mm (8.3 in)
256 mm (10 in)
Monthly rainy days
10 days
9 days
13 days
Weather conditions
poor
poor
poor
Climate in Ja-Ela →

Seeduwa

In August Seeduwa generally has very high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 26°C (79°F) and heavy monthly rainfall. So on average the conditions are poor that month.

« July
August
September »
July
August
September
Max temperature
30°C (86°F)
30°C (86°F)
30°C (86°F)
Min temperature
26°C (79°F)
26°C (79°F)
25°C (77°F)
Monthly sun hours
202 hours
202 hours
189 hours
Monthly rainfall
222 mm (8.7 in)
205 mm (8.1 in)
252 mm (9.9 in)
Monthly rainy days
10 days
9 days
12 days
Weather conditions
poor
poor
poor
Climate in Seeduwa →

Gampaha

In August Gampaha generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 25°C (77°F) and heavy monthly rainfall. So on average the conditions are poor that month.

« July
August
September »
July
August
September
Max temperature
31°C (88°F)
31°C (88°F)
31°C (88°F)
Min temperature
25°C (77°F)
25°C (77°F)
25°C (77°F)
Monthly sun hours
202 hours
202 hours
189 hours
Monthly rainfall
251 mm (9.9 in)
228 mm (9 in)
263 mm (10 in)
Monthly rainy days
11 days
10 days
13 days
Weather conditions
poor
poor
poor
Climate in Gampaha →

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

In our records: Sri Lanka August extremes

Notable August records observed across cities in Sri Lanka in our climate database (1995 – 2026). Historic readings can vary in quality, so treat these as illustrative.

  • In our records, the warmest August day in Sri Lanka reached 40°C (104°F) in Polonnaruwa on August 11, 2023.

Popular cities in August

Day & night temperatures, rainfall and average weather in Gampaha District in August.

City Weather Day temp Night temp Rainfall
Negombo 30°C (86°F) 26°C (79°F) 195 mm (7.7 in)
Katunayaka 30°C (86°F) 26°C (79°F) 203 mm (8 in)
Ja-Ela 30°C (86°F) 26°C (79°F) 210 mm (8.3 in)
Seeduwa 30°C (86°F) 26°C (79°F) 205 mm (8.1 in)
Gampaha 31°C (88°F) 25°C (77°F) 228 mm (9 in)
Uswetakeiyawa 30°C (86°F) 26°C (79°F) 205 mm (8.1 in)

Gampaha District weather in August: frequently asked questions

What is the weather like in Gampaha District, Sri Lanka in August?

In August, Gampaha District, Sri Lanka generally has poor weather conditions. Negombo sees daytime temperatures near 30°C (86°F), with nights cooling to roughly 26°C (79°F).

What is the average temperature in Gampaha District, Sri Lanka in August?

Average temperatures in Gampaha District, Sri Lanka during August range from a nighttime low near 26°C (79°F) to a daytime high around 30°C (86°F) in Negombo.

Does Gampaha District, Sri Lanka get a lot of rain in August?

Expect plenty of rainfall. Negombo records an average of 195 mm (7.7 in) in August, putting it among the wetter months for Gampaha District, Sri Lanka.

Is August a Good Time to Visit Gampaha District, Sri Lanka?

In our opinion, August may not be the ideal time to visit Gampaha District, Sri Lanka due to the typically unpleasant weather in Negombo.

Generally speaking, January and February provide tolerable weather in Negombo. In contrast, April, May, June, July, August, September, October and November tend to have poor weather conditions.

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.

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