Trincomalee Weather in January
In Trincomalee, January brings high daytime temperatures around 28°C (82°F), with nights cooling to 25°C (77°F). Expect quite a bit of rainfall this month.
Rainfall in Trincomalee in January
You can typically expect 7 days of rain this month, averaging around 130 mm (5.1 in). The rain this month typically falls in concentrated bursts rather than all-day showers. Expect a few heavier spells rather than constant grey skies.
Temperature in Trincomalee in January
January in Trincomalee brings high temperatures, with highs of 28°C (82°F) and nights around 25°C (77°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. At 25°C (77°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference. While slightly cooler, this month still offers warm and pleasant weather.
Sunshine in Trincomalee in January
The days are predominantly sunny, with an estimated total of around 205 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.
Wind Speed in Trincomalee in January
Wind speeds average 4 m/s (8 knots) during January. At this speed, expect moderate winds that can raise dust and move small branches. Since this is an average, some days have gentle light winds while others experience stronger breezes that are quite noticeable.
Average water temperature in January
The water is 27°C (81°F) this month, warm enough that getting in requires no effort at all. Good conditions for swimming, snorkeling, or just floating around.If you prefer enjoying temperate temperatures and rain-free days, February typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
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 Trincomalee's climate page.
Trincomalee Temperature in January
Min Temperature
25°C (77°F)
Max Temperature
28°C (82°F)
Water Temperature
27°C (81°F)
Chance of Rain
23%
Precipitation
130 mm (5.1 in)
Rainy days
7 days
Humidity
79%
Windspeed
4 m/s (8 knots)
Sunshine
205 hours
Percentage Sunshine
Daily Historical Temperatures
44-year average (1976-2026)
Based on our historical records, temperatures in Trincomalee typically stay consistent throughout January, with daily highs averaging around 28°C (82°F). Nights are warm, with lows around 25°C (77°F).
Average temperatures in January
Daily Historical Precipitation
44-year average (1976-2026)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in January
Historical weather for Trincomalee in January
Browse day-by-day weather records for Trincomalee spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Trincomalee historical weather extremes in January
Based on weather observations in Trincomalee between 2004 and 2025, these are the recorded extremes during January.
- On January 27, 2020, temperatures climbed to 33°C (91°F), marking the warmest January day on record.
- Trincomalee experienced its chilliest January day on January 22, 2005, reaching only 24°C (75°F).
- The coldest night in January in Trincomalee was on January 7, 2018, with a minimum of 20°C (68°F).
Best Places in Sri Lanka in January
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 January →
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What to Wear in Trincomalee in January
Warm weather calls for comfortable, breathable clothing in January. 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). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. With water temperatures around 27°C (81°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Trincomalee in January
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 Trincomalee's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Trincomalee climate overview or explore weather in Sri Lanka.
