Kalupahana Weather in December
December in Kalupahana sees daytime temperatures around 26°C (79°F) and lows of 18°C (64°F) at night. Being part of the rainy season, heavy rainfall is a regular part of the day, so pack accordingly.
Rainfall in Kalupahana in December
Kalupahana is in the rainy season in December, with rain on around 13 days and an average of 275 mm (11 in). Showers during the rainy season tend to be heavy and can come down intensely. An umbrella is often not enough, so a poncho or waterproof jacket is a better choice.
Temperature in Kalupahana in December
Kalupahana in December gets highs of 26°C (79°F) during the day and drops to 18°C (64°F) at night. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. At 18°C (64°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping. While slightly cooler, this month still offers warm and pleasant weather.
Sunshine in Kalupahana in December
The city usually sees around 143 hours of sunlight, indicating a moderately sunny period (despite it being part of rainy season).Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, February, March, June, July and August typically offer the best weather for Kalupahana.
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 Kalupahana's climate page.
Kalupahana Temperature in December
Min Temperature
18°C (64°F)
Max Temperature
26°C (79°F)
Chance of Rain
43%
Precipitation
275 mm (11 in)
Rainy days
13 days
Humidity
85% *
Sunshine
143 hours *
Percentage Sunshine
*
Daily Historical Temperatures
45-year average (1976-2025)
Based on our historical records, temperatures in Kalupahana typically stay consistent throughout December, with daily highs averaging around 26°C (79°F). Nights are pleasant, with lows typically ranging from 14°C (57°F) to 16°C (61°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 Kalupahana in December
Browse day-by-day weather records for Kalupahana spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Kalupahana historical weather extremes in December
According to our 20 years of weather records for Kalupahana, the following extremes were recorded between 2005 and 2025.
- On December 5, 2020, temperatures climbed to 34°C (93°F), marking the warmest December day on record.
- The lowest daytime temperature in December was 16°C (61°F), recorded on December 21, 2005.
- The coldest night in December in Kalupahana was on December 31, 2006, with a minimum of 7°C (45°F).
- The wettest day in December Kalupahana was on December 25, 2014 with 184 mm (7.2 in) of precipitation.
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 Kalupahana in December
Warm temperatures in December make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Kalupahana 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 Kalupahana's climate page.
Temperature Rainfall Sunshine Humidity
See the full Kalupahana climate overview or explore weather in Sri Lanka.
