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Dehiwala weather in December (Colombo District, Sri Lanka)

What weather conditions can you expect in Dehiwala this December? Here's what you need to know about the weather for the month.

Temperatures

Typically, December in Dehiwala includes very high temperatures and heavy rainfall. Throughout the day, temperatures typically settle at around 31°C. But by evening, they drop to around 24°C. Expect some days to be hotter than these averages. Stay cool by wearing light clothing and drinking plenty of water throughout the day.

Precipitation

Dehiwala in December falls under the rainy season with heavy rainfall, averaging around 189 mm for the month. On average, there are about 10 days with rain during this month.

Average sunshine

Expect sunny days throughout the month, with an estimated 217 hours of sunshine. Making it a pleasant time to visit Dehiwala.

Should you favor a climate that's both dry and comfortably warm January, February and March typically offer the most agreeable circumstances. On the other hand, April, May, June, July, August, September, October and November tend to be characterized by conditions that may not be as optimal.

Need inspiration to choose your next destination? Our innovative weather planner helps you discover the perfect getaway tailored to your ideal climate conditions.

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 Dehiwala's climate page.

Dehiwala, monthly averages in December

Min TemperatureMin Temperature 24°C  
Max TemperatureMax Temperature 31°C  
Water TemperatureWater Temperature 27°C *  
Chance of RainChance of Rain 33%  
PrecipitationPrecipitation 189 mm  
Rainy daysRainy days 10 days  
HumidityHumidity 72% *  
WindspeedWindspeed 1 m/s *  
SunshineSunshine 217 hours *  
Percentage SunshinePercentage Sunshine *  
Data from: Colombo, Sri Lanka (5 KM, 3 Miles).

Where to go in Sri Lanka in December

Find out more about the weather in Sri Lanka and which places have the best travel conditions in this month.

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In December generally
unpleasant weather
with very high temperatures
and heavy monthly rainfall

More information

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 Dehiwala's climate page.

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. With a water temperature of around 27°C this is a great month to swim so bring your swimwear.

What To Do

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

Swimming
8/10
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 Dehiwala.

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.