Katunayaka Weather in December
December in Katunayaka averages 31°C (88°F) during the day and 24°C (75°F) at night. Quite a bit of rainfall is typical this month, with around 158 mm (6.2 in) on average. An umbrella is a good idea.
Rainfall in Katunayaka in December
Typically, about 10 days will experience rainfall, with an average of 158 mm (6.2 in) for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in Katunayaka in December
Katunayaka in December gets highs of 31°C (88°F) during the day and drops to 24°C (75°F) at night. It's usually most comfortable outside during the morning and later in the day. Nights are warm at 24°C (75°F). It's worth making sure your accommodation has decent ventilation or air conditioning.
Sunshine in Katunayaka in December
Expect a lot of sunshine this month, with about 217 hours of sun. These sunny conditions add to the overall experience.Our weather planner can help you find worldwide destinations with pleasant weather during this period. January typically offers the best weather for Katunayaka.
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 Katunayaka's climate page.
Katunayaka Temperature in December
Min Temperature
24°C (75°F)
Max Temperature
31°C (88°F)
Chance of Rain
35%
Precipitation
158 mm (6.2 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 Katunayaka typically stay consistent throughout December, with daily highs averaging around 31°C (88°F). Nights are warm, with lows around 24°C (75°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 Katunayaka in December
Browse day-by-day weather records for Katunayaka spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Katunayaka historical weather extremes in December
Based on 25 years of weather observations in Katunayaka between 2000 and 2025, these are the recorded extremes.
- Katunayaka recorded its highest December temperature of 34°C (93°F) on December 11, 2021.
- Katunayaka experienced its chilliest December day on December 20, 2014, reaching only 24°C (75°F).
- The coldest night in December in Katunayaka was on December 5, 2020, with a minimum of 17°C (63°F).
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 Katunayaka 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. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Katunayaka 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 Katunayaka's climate page.
Temperature Rainfall Sunshine Humidity
See the full Katunayaka climate overview or explore weather in Sri Lanka.
