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Thinking of visiting Trincomalee in April? Expect very high temperatures reaching 32°C (90°F) during the day, dropping to 27°C (81°F) at night, and note that quite a bit of rainfall is likely.
If your ideal day consists of dry skies and pleasant temperatures, February typically offers the best circumstances for Trincomalee.
Pick a month to see the average temperature, rainfall and sunshine in Trincomalee - and find the best time to visit.
42-year average (1976-2025)
Based on our historical records, temperatures in Trincomalee typically stay consistent throughout April, with daily highs averaging around 32°C (90°F). Nights are warm, with lows around 26°C (79°F).
42-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
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.
According to our 21 years of weather records for Trincomalee, the following extremes were recorded between 2005 and 2026.
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 April →
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).
Warm temperatures in April 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. Rain gear is recommended, you can expect wet weather on multiple days. With water temperatures around 28°C (82°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.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Trincomalee climate overview or explore weather in Sri Lanka.
Where to go in April - average daytime high across popular destinations.
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