ClimateForecastDecemberJanuary >>

Dehiwala weather in December (Colombo District, Sri Lanka)

Looking to travel to Dehiwala in December? Wondering if it's an optimal time for a visit? This page provides detailed information on the weather conditions for that month.

In December, Dehiwala generally has 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.

While these temperatures are typical, some days might be even hotter. Always be prepared for the unexpected spikes in warmth. Dressing in lightweight and breathable outfits will help you stay cool. Don't forget to stay hydrated and wear sun protection to handle the heat better.

Dehiwala in December falls under the rainy season with heavy rainfall, averaging around 189 mm for the month. Typically around 10 days of rainfall is expected.

With around 217 hours of sunshine, the days are mostly sunny. It gives a pleasant and vibrant feel to the area.

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.

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

 

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 4 km/h *  
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 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 Dehiwala 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 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 climate conditions. Find out where to go with our weather planner.