10 Hidden gems in Asia you need to visit
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Negombo Weather in December
December in Negombo brings very high temperatures, with daytime highs of 31°C (88°F) and nights around 24°C (75°F). Quite a bit of rainfall is expected, around 151 mm (5.9 in), so pack an umbrella.
Rainfall in Negombo in December
Typically, you can expect about 10 days of rain this month, with 151 mm (5.9 in) on average. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Negombo in December
December in Negombo brings typical temperatures with highs around 31°C (88°F) and lows of 24°C (75°F). If you're spending a lot of time outdoors, it helps to plan around the warmer part of the day. Nights stay warm at around 24°C (75°F), so light bedding and good ventilation are worth thinking about.
Sunshine in Negombo in December
Expect sunny days throughout the month, with an estimated 217 hours of sunshine. This makes it a pleasant time to visit Negombo.Our weather planner can help you find worldwide destinations with pleasant weather during this period. January and February typically offer the best weather for Negombo.
Negombo Temperature in December
Min Temperature
24°C (75°F)
Max Temperature
31°C (88°F)
Chance of Rain
35%
Precipitation
151 mm (5.9 in)
Rainy days
10 days
Humidity
72% *
Sunshine
217 hours *
Percentage Sunshine
*
* Data from: Colombo, Sri Lanka (34 KM, 21 Miles).
Negombo Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Negombo - and find the best time to visit.
Daily Historical Temperatures
45-year average (1976-2025)
Based on our historical records, temperatures in Negombo 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 records for Negombo in December
Browse day-by-day weather records for Negombo spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Negombo historical weather extremes in December
According to our 25 years of weather records for Negombo, the following extremes were recorded between 2000 and 2025.
- On December 11, 2021, temperatures climbed to 34°C (93°F), marking the warmest December day on record.
- The coldest December day was on December 20, 2014, with a maximum of 24°C (75°F).
- Negombo registered its coldest December night on December 5, 2020, 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 Negombo 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! And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
What To Do in Negombo in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming8/10 -
Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
Negombo 3-Day Forecast
More climate data for Negombo
Temperature Rainfall Sunshine Humidity
See the full Negombo climate overview or explore weather in Sri Lanka.
Popular in December
Where to go in December - average daytime high across popular destinations.
Colombo
31°C (88°F) Negombo31°C (88°F) Unawatuna29°C (84°F) Galle29°C (84°F) Mirissa30°C (86°F) Hikkaduwa29°C (84°F) Kandy27°C (81°F) Nuwara Eliya25°C (77°F) Bucket list
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