Kalutara Weather in December
December in Kalutara brings very high temperatures, with highs of 30°C (86°F) and nights dropping to 24°C (75°F). The rainy season is in full swing this month, so frequent downpours are part of the picture.
Rainfall in Kalutara in December
As part of the rainy season, Kalutara sees around 10 days of rain in December, with an average of 195 mm (7.7 in). Rain during the rainy season here tends to be intense rather than just persistent drizzle. Expect significant downpours, often in the late afternoon.
Temperature in Kalutara in December
In December, Kalutara gets very high temperatures, with highs of 30°C (86°F). Nights cool to around 24°C (75°F). Indoor breaks or shaded spots can make the warmer part of the day much more comfortable. Nights are warm at 24°C (75°F). It's worth making sure your accommodation has decent ventilation or air conditioning.
Sunshine in Kalutara in December
Expect a lot of sunshine this month, with about 217 hours of sun. Showers typically arrive in the late afternoon or evening, keeping mornings and early afternoons sunny. Even during the wet season, there's plenty of sunshine for sightseeing.If you prefer dry days with pleasant temperatures, December may not be the ideal month to visit Kalutara. Our weather planner can help you explore destinations with more pleasant weather conditions.
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 Kalutara's climate page.
Kalutara Temperature in December
Min Temperature
24°C (75°F)
Max Temperature
30°C (86°F)
Chance of Rain
33%
Precipitation
195 mm (7.7 in)
Rainy days
10 days
Humidity
72% *
Sunshine
217 hours *
Percentage Sunshine
*
Daily Historical Temperatures
45-year average (1976-2025)
Based on our historical records, temperatures in Kalutara typically stay consistent throughout December, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 23°C (73°F).
Average temperatures in December
Daily Historical Precipitation
45-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Kalutara in December
Browse day-by-day weather records for Kalutara spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Kalutara historical weather extremes in December
Based on 25 years of weather observations (2000-2025), these are the most extreme conditions recorded in Kalutara.
- The warmest day in December was on December 11, 2021, with a maximum of 34°C (93°F).
- On December 20, 2014, Kalutara saw its coldest December day with temperatures maxing out at 25°C (77°F).
- Peak precipitation in December occurred on December 25, 2022, when 130 mm (5.1 in) of precipitation was measured.
Best Places 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. See all of Sri Lanka in December →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Kalutara in December
Warm but pleasant conditions in Kalutara in December. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Kalutara in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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 Kalutara's climate page.
Temperature Rainfall Sunshine Humidity
See the full Kalutara climate overview or explore weather in Sri Lanka.
