Colombo weather in December (Colombo District, Sri Lanka)

Planning a trip to Colombo in December? Check out this comprehensive weather guide.

In December, Colombo generally has very high temperatures and heavy rainfall. Anticipate daytime temperatures around 31°C, while night temperatures can drop to 24°C.

Keep in mind that while these are the average temperatures, there can be days that are even hotter. It's essential to be prepared for such heat. Wearing light, breathable fabrics and protecting yourself from the sun's intensity with hats or shades can make a difference. Hydration is key, so remember to drink plenty of water, especially if you find yourself outdoors for extended periods.

Colombo in December falls under the rainy season with heavy rainfall, averaging around 185 mm for the month. Typically around 10 days of rainfall is expected.

The days are predominantly sunny, with an estimated total of around 217 hours of sunshine. This amount of sunlight does not only brightens the days but also contributes to a cheerful ambiance in the area during this month.

If you prefer dry days with pleasant temperatures, January, February and March typically offer the best circumstances. While April, May, June, July, August, September, October and November tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Colombo climate page with graphs.

 

Colombo, monthly averages in December

Min TemperatureMin Temperature 24°C  
Max TemperatureMax Temperature 31°C  
Water TemperatureWater Temperature 27°C  
Chance of RainChance of Rain 34%  
PrecipitationPrecipitation 185 mm  
Rainy daysRainy days 10 days  
HumidityHumidity 72%  
WindspeedWindspeed 4 km/h  
SunshineSunshine 217 hours  
Percentage SunshinePercentage Sunshine  

Where to go in Sri Lanka in December

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

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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).

So, what should you wear in Colombo in December?

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 in December.

Swimming
8/10
Cycling
7/10
Walking
7/10
Camping
6/10
Outdoor sports
7/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Colombo.

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