Trincomalee weather by month & the best time to visit
Sri Lanka · beach resort · tropical — wet & dry seasons climate
The best time to visit Trincomalee is June — its sunniest month (Sunshine Score 89/100), with July and August close behind. Trincomalee averages about 2,591 hours of sunshine a year. Daytime highs around 32°C / 90°F and roughly 29 mm of rain in June.
When is the best time to visit Trincomalee?
For sunshine, the best time to visit Trincomalee is June, then July and August. The dullest month is October (67/100, 227 mm of rain). The full month-by-month picture is in the table below.
How sunny is Trincomalee?
Trincomalee gets a lot of sun: around 2,591 hours a year. June (89/100) is noticeably better than October (67). It ranks #4 of 6 destinations in Sri Lanka for annual sunshine, right at the national median of 2,591 hours. Rain has a clear season: the wettest stretch, around November, carries about 55% of the annual 1,565 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 71 | 27° / 81°F | 24° / 75°F | 127 mm | 9 | 28° / 82°F |
| February | 77 | 28° / 82°F | 25° / 77°F | 93 mm | 10 | 29° / 84°F |
| March | 81 | 30° / 86°F | 25° / 77°F | 71 mm | 11 | 30° / 86°F |
| April | 74 | 31° / 88°F | 27° / 81°F | 109 mm | 11 | 30° / 86°F |
| May | 75 | 32° / 90°F | 27° / 81°F | 105 mm | 10 | 31° / 88°F |
| June | 89 | 32° / 90°F | 26° / 79°F | 29 mm | 10 | 29° / 84°F |
| July | 88 | 32° / 90°F | 26° / 79°F | 36 mm | 10 | 29° / 84°F |
| August | 84 | 32° / 90°F | 26° / 79°F | 57 mm | 11 | 29° / 84°F |
| September | 79 | 32° / 90°F | 26° / 79°F | 80 mm | 11 | 29° / 84°F |
| October | 67 | 30° / 86°F | 26° / 79°F | 227 mm | 10 | 30° / 86°F |
| November | 67 | 28° / 82°F | 26° / 79°F | 327 mm | 8 | 30° / 86°F |
| December | 67 | 28° / 82°F | 25° / 77°F | 304 mm | 7 | 28° / 82°F |
Sea temperature in Trincomalee by month
The sea off Trincomalee is warmest in May at around 31°C / 88°F, and coolest in January at 28°C / 82°F. The water sits at a comfortable 21°C or warmer roughly all year round. Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
Trincomalee: questions and answers
What kind of destination is Trincomalee?
Trincomalee is a beach resort in Sri Lanka with a tropical — wet & dry seasons climate — the sea reaches 31°C at its warmest and is swimmable (21°C+) year-round.
How many hours of sunshine does Trincomalee get a year?
Trincomalee gets about 2,591 hours of sunshine a year, at its best around June.
When is the best time to visit Trincomalee?
The sunniest time to visit Trincomalee is June, when the Sunshine Score peaks at 89/100 (with July and August close behind). Expect daytime highs around 32°C / 90°F.
What is the least sunny month in Trincomalee?
October is the least sunny month in Trincomalee, scoring 67/100 with about 227 mm of rain.
What is the sea temperature in Trincomalee?
The sea in Trincomalee ranges from about 28°C (January) to 31°C (May). Month-by-month sea temperatures are on this page.
How strong is the sun in Trincomalee?
The typical midday UV index in Trincomalee peaks around 11 (extreme) in March, easing to about 7 (high) in December. Month-by-month midday UV values are in the UV column of the table on this page.
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