Nilaveli
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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.

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
*
* Data from: Trincomalee, Sri Lanka (14 KM, 8 Miles).

Nilaveli Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Nilaveli - and find the best time to visit.

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 records 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
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

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.

  • Swimming
    7/10
  • Cycling
    7/10
  • Walking
    7/10
  • Camping
    6/10
  • Outdoor sports
    7/10

Nilaveli 3-Day Forecast

Popular in December

Where to go in December - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.