City in Eastern Province, Sri Lanka
Trincomalee weather by month and the best time to visit
When to go to Trincomalee
May–Sep is dry with calm seas for diving and snorkeling. Oct–Jan brings northeast monsoon rain and rough sea; whale watching is best Mar–Apr and Aug–Sep.
Trincomalee weather by month
Average daily high, rainfall and conditions.
- Jan27°127 mm
- Feb28°93 mm
- Mar30°71 mm
- Apr31°109 mm
- May32°105 mm
- Jun32°28 mm
- Jul32°36 mm
- Aug32°57 mm
- Sep32°80 mm
- Oct30°227 mm
- Nov28°327 mm
- Dec28°304 mm
Monthly averages
| Month | High | Low | Rain | Humidity | Conditions |
|---|---|---|---|---|---|
| January | 27°C81°F | 24°C76°F | 127 mm | 80% | Pleasant |
| February | 28°C83°F | 25°C76°F | 93 mm | 78% | Pleasant |
| March | 30°C86°F | 25°C78°F | 71 mm | 76% | Pleasant |
| April | 31°C88°F | 27°C80°F | 109 mm | 77% | Hot & humid |
| May | 32°C89°F | 27°C80°F | 105 mm | 78% | Hot & humid |
| June | 32°C89°F | 26°C79°F | 28 mm | 76% | Hot & humid |
| July | 32°C89°F | 26°C79°F | 36 mm | 74% | Pleasant |
| August | 32°C89°F | 26°C78°F | 57 mm | 74% | Pleasant |
| September | 32°C89°F | 26°C78°F | 80 mm | 74% | Pleasant |
| October | 30°C87°F | 26°C78°F | 227 mm | 78% | Rainy |
| November | 28°C83°F | 26°C78°F | 327 mm | 83% | Very wet |
| December | 28°C82°F | 25°C77°F | 304 mm | 82% | Very wet |
Best months across Sri Lanka
| Place | Best months | Warmest month |
|---|---|---|
| Ella | Jan–Mar, Jul–Aug | Aug (27°C) |
| Colombo | Dec–Mar | Mar (31°C) |
| Kandy | Jan–Apr | Apr (30°C) |
| Galle | Dec–Mar | Mar (29°C) |
| Mirissa | Dec–Mar | Mar (30°C) |
| Weligama | Nov–Mar | Mar (30°C) |
| Arugam Bay | May–Sep | Aug (32°C) |
| Sigiriya | Jan–Mar, Jul–Sep | Apr (32°C) |
| Unawatuna | Dec–Mar | Mar (29°C) |
| Hikkaduwa | Dec–Mar | Mar (29°C) |
| Nuwara Eliya | Feb–Apr, Aug | Mar (20°C) |
| Negombo | Dec–Mar | Mar (31°C) |
| Ahangama | Nov–Mar | Mar (30°C) |
| Hiriketiya | Nov–Mar | Mar (30°C) |
| Trincomalee | May–Sep | Aug (32°C) |
| Bentota | Dec–Apr | Mar (30°C) |
| Tangalle | Dec–Apr | Mar (30°C) |
| Jaffna | Feb–Mar, Jul–Aug | Apr (32°C) |
Quick answers
What is the best month to visit Trincomalee?
May–Sep. May–Sep is dry with calm seas for diving and snorkeling. Oct–Jan brings northeast monsoon rain and rough sea; whale watching is best Mar–Apr and Aug–Sep.
When is the rainy season in Trincomalee?
Rain peaks in November with about 327 mm. Months with 150 mm or more: Oct–Dec.
What is the hottest month in Trincomalee?
August, with average highs of 32°C (89°F).
How cold does Trincomalee get?
The coolest nights are in January, averaging 24°C (76°F).
More about Trincomalee
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Sources
Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.