Nilaveli Weather in December
With daytime temperatures of 29°C (84°F) and nighttime lows of 25°C (77°F), December in Nilaveli brings high temperatures during the day. Do keep in mind that December is part of the rainy season, with frequent and often heavy rainfall.
Rainfall in Nilaveli in December
Nilaveli is in the rainy season in December, with rain on around 15 days and an average of 273 mm (11 in). With high rainfall totals spread across the month, individual showers can be very heavy. Waterproof gear is strongly recommended.
Temperature in Nilaveli in December
In December, expect high temperatures in Nilaveli, with highs of 29°C (84°F) and lows of 25°C (77°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. 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 Nilaveli in December
The area enjoys a moderate level of sunlight, with around 171 hours. It's a good balance between sunny and rainy days.
Wind Speed in Nilaveli in December
December sees wind speeds averaging 4 m/s (8 knots). You'll experience variable conditions with moderate winds that create small waves on water and keep branches moving. Conditions range from light winds to moderate breezes throughout the month.
Average water temperature in December
With water at 27°C (81°F), you can expect warm, pleasant conditions for any water activity. There's no adjustment period, it feels comfortable straight away.Our weather planner can help you find worldwide destinations with pleasant weather during this period. February typically offers the best weather for Nilaveli.
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 Nilaveli's climate page.
Nilaveli Temperature in December
Min Temperature
25°C (77°F)
Max Temperature
29°C (84°F)
Water Temperature
27°C (81°F) *
Chance of Rain
51%
Precipitation
273 mm (11 in)
Rainy days
15 days
Humidity
80% *
Windspeed
4 m/s (8 knots) *
Sunshine
171 hours *
Percentage Sunshine
*
Daily Historical Temperatures
41-year average (1976-2025)
Based on our historical records, temperatures in Nilaveli typically stay consistent throughout December, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 25°C (77°F).
Average temperatures in December
Daily Historical Precipitation
41-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 Nilaveli in December
Browse day-by-day weather records for Nilaveli spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Nilaveli historical weather extremes in December
Our historical data for Nilaveli spans 2005 to 2025, revealing these weather extremes.
- Nilaveli recorded its highest December temperature of 33°C (91°F) on December 12, 2016.
- The lowest daytime temperature in December was 24°C (75°F), recorded on December 1, 2016.
- Nilaveli registered its coldest December night on December 8, 2022, with temperatures dropping to 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
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tolerable
unpleasant
poor
What to Wear in Nilaveli in December
Warm but pleasant conditions in Nilaveli 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. The water temperature sits at about 27°C (81°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Nilaveli 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 Nilaveli's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Nilaveli climate overview or explore weather in Sri Lanka.
