Trincomalee Weather in August
During August, Trincomalee experiences very high daytime temperatures of 34°C (93°F) and cooler nights around 27°C (81°F). Some rainfall is typical during this period.
Rainfall in Trincomalee in August
You can expect rain on roughly 5 days based on historical data, averaging 44 mm (1.7 in) for the month. Rainfall tends to arrive in short, intense showers this month. Rain days are few, but the showers can be surprisingly heavy.
Temperature in Trincomalee in August
August in Trincomalee brings very high temperatures, with highs of 34°C (93°F) and nights around 27°C (81°F). For most visitors, the main thing to prepare for is the heat during the day. Nights are warm at 27°C (81°F), which can make sleeping uncomfortable. Keeping windows open or using a fan can help. A cold shower before bed is also a good way to cool down.
Sunshine in Trincomalee in August
Enjoy a sunny month with about 254 hours of sunshine, the clear skies make Trincomalee even more beautiful.
Wind Speed in Trincomalee in August
August 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 August
At 26°C (79°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.If you prefer dry days with pleasant temperatures, August may not be the ideal month to visit Trincomalee. Our weather planner can help you explore destinations with more pleasant weather conditions.
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 August
Min Temperature
27°C (81°F)
Max Temperature
34°C (93°F)
Water Temperature
26°C (79°F)
Chance of Rain
17%
Precipitation
44 mm (1.7 in)
Rainy days
5 days
Humidity
61%
Windspeed
4 m/s (8 knots)
Sunshine
254 hours
Percentage Sunshine
Daily Historical Temperatures
42-year average (1976-2025)
Based on our historical records, temperatures in Trincomalee typically stay consistent throughout August, with daily highs averaging around 34°C (93°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in August
Daily Historical Precipitation
42-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather for Trincomalee in August
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 August
According to our 22 years of weather records for Trincomalee, the following extremes were recorded between 2003 and 2025.
- The hottest August day on record in Trincomalee reached 38°C (100°F) (August 5, 2012).
- The coldest August day was on August 17, 2004, with a maximum of 26°C (79°F).
- The coldest night in August in Trincomalee was on August 26, 2016, with a minimum of 22°C (72°F).
Best Places in Sri Lanka in August
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 August →
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What to Wear in Trincomalee in August
Hot weather in August means keeping cool is the priority. Loose-fitting clothes in natural fabrics work best. Pack plenty of shorts, tank tops, and breathable shirts. Don't forget a hat, swimwear, and comfortable sandals. Rain gear is recommended, you can expect wet weather on multiple days. The water temperature sits at about 26°C (79°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Trincomalee in August
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.
