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Gampaha District weather in May

Thinking about venturing to Gampaha District this May and curious about the weather conditions to expect? This page holds all the key information you seek, responding to your question:

What is the weather like in Gampaha District in May?

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

You can expect very warm maximum daytime temperatures of around 31°C and nighttime temperatures around 27°C in Negombo. While the given temperatures for day and night are typical, there may be days that feel warmer. Make sure you're dressed in a way that keeps you cool and comfortable.

In May, precipitation varies across different areas. From heavy rainfall in Negombo with an average of 266 mm to heavy rainfall in Kapugoda with 301 mm. The city Negombo usually sees around 202 hours of sunlight, indicating many sunny days.

For specific regional insights in Gampaha District for May, refer to the map provided below. For an in-depth overview of the yearly weather conditions, do visit our Gampaha District climate page.

Where to go in Gampaha District in May

Find the average weather conditions in May for the most popular destinations in Gampaha District on the map below. Click on a destination dot for more detailed information.

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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).

Popular destinations in Gampaha District

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

Average weather in Negombo

In May Negombo generally has very high temperatures with maximum daytime temperatures around 31°C, minimum nighttime temperatures around 27°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
<<   April April
<<  
32°C 
26°C 
234 hours 
192 mm 
13 days 
31°C 
27°C 
202 hours 
266 mm 
12 days 
poor 
June   >> June
>>  
30°C 
26°C 
195 hours 
258 mm 
13 days 
poor 
Climate in Negombo

Average weather in Katunayaka

In May Katunayaka generally has very high temperatures with maximum daytime temperatures around 31°C, minimum nighttime temperatures around 26°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
<<   April April
<<  
32°C 
26°C 
234 hours 
196 mm 
13 days 
31°C 
26°C 
202 hours 
268 mm 
12 days 
poor 
June   >> June
>>  
30°C 
26°C 
195 hours 
267 mm 
13 days 
poor 
Climate in Katunayaka

Average weather in Ja-Ela

In May Ja-Ela generally has very high temperatures with maximum daytime temperatures around 31°C, minimum nighttime temperatures around 26°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
<<   April April
<<  
33°C 
26°C 
234 hours 
199 mm 
13 days 
31°C 
26°C 
202 hours 
275 mm 
13 days 
poor 
June   >> June
>>  
31°C 
26°C 
195 hours 
277 mm 
14 days 
poor 
Climate in Ja-Ela

Average weather in Seeduwa

In May Seeduwa generally has very high temperatures with maximum daytime temperatures around 31°C, minimum nighttime temperatures around 26°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
<<   April April
<<  
32°C 
26°C 
234 hours 
197 mm 
13 days 
31°C 
26°C 
202 hours 
271 mm 
13 days 
poor 
June   >> June
>>  
31°C 
26°C 
195 hours 
271 mm 
14 days 
poor 
Climate in Seeduwa

Average weather in Gampaha

In May Gampaha generally has very high temperatures with maximum daytime temperatures around 32°C, minimum nighttime temperatures around 26°C and heavy monthly rainfall. So on average the conditions are poor that month.

Gampaha
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
<<   April April
<<  
33°C 
25°C 
234 hours 
208 mm 
14 days 
poor 
32°C 
26°C 
202 hours 
267 mm 
13 days 
poor 
June   >> June
>>  
31°C 
26°C 
195 hours 
290 mm 
14 days 
poor 
Climate in Gampaha

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

Is May the best time to visit Gampaha District?

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

Generally speaking, January, February and March provide 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. Interested in the weather conditions in a specific month? Select the month below.

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  • 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 climate conditions. Find out where to go with our weather planner.