The climate in Negombo during May can be summarized as very hot, humid and very wet.
May is in the spring in Negombo and is typically the warmest month of the year. Daytime maximum temperatures average around a steamy 32°C (89°F), whilst at night 25°C (78°F) is normal.
|Daytime temperature||31.7°C 89°F|
|Nightly temperature||25.4°C 77.6°F|
|Average temperature||28.5°C 83.3°F|
|Daily sunshine||6.9 hrs|
|Avg rainfall||298 mm 11.7 ins|
|Rainy days||12 days|
|Sea temperature||29.4°C 84.8°F|
|Windspeed||10.4kph 7 mph|
On average May is the 2nd wettest month of the year in Negombo with around 298mm 11.7 inches of rain making it a very wet time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.9 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Negombo in May 2023.
|Hottest month:||April||32.4°C 90.3°F|
|Driest month:||January||48mm 1.9ins|
|Coldest month:||January||30.9°C 87.6°F|
|Wettest month:||October||351mm 13.8ins|