Unawatuna Weather in December

December in Unawatuna brings high temperatures, with daytime highs of 29°C (84°F) and nights around 25°C (77°F). Quite a bit of rainfall is expected, around 162 mm (6.4 in), so pack an umbrella.

Rainfall in Unawatuna in December

Typically, you can expect about 10 days of rain this month, with 162 mm (6.4 in) on average. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Unawatuna in December

Daytime temperatures in Unawatuna reach 29°C (84°F) in December, dropping to 25°C (77°F) at night. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With overnight lows of 25°C (77°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably.

Sunshine in Unawatuna in December

With approximately 220 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

If you prefer dry days with pleasant temperatures, January typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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For a detailed overview over the year and the best time to visit Sri Lanka, check out our Unawatuna's climate page.

Unawatuna Temperature in December

Min Temperature 25°C (77°F)  

Max Temperature 29°C (84°F)  

Chance of Rain 32%  

Precipitation 162 mm (6.4 in)  

Rainy days 10 days  

Sunshine 220 hours *  

Percentage Sunshine *  

* Data from: Galle, Sri Lanka (5 KM, 3 Miles).

Historical weather for Unawatuna in December

Browse day-by-day weather records for Unawatuna spanning 25 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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‹ January February March April May June July August September October November December ›

Unawatuna historical weather extremes in December

Based on weather observations in Unawatuna between 2005 and 2025, these are the recorded extremes during December.

• On December 17, 2009, temperatures climbed to 33°C (91°F), marking the warmest December day on record.
• The coldest December day was on December 25, 2014, with a maximum of 26°C (79°F).
• The lowest overnight temperature recorded in December was 12°C (54°F) (December 8, 2021).

What to Wear in Unawatuna in December

Warm weather calls for comfortable, breathable clothing in December. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Unawatuna in December

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

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Sri Lanka, check out our Unawatuna's climate page.

More climate data for Unawatuna

Temperature Rainfall Sunshine

See the full Unawatuna climate overview or explore weather in Sri Lanka.