22° to 30°
Coolest & Showery
The coolest month of the year, with rain still a fairly regular presence.
☔ Umbrella handy🥵 Heat protection
23° to 31°
Dry Season Begins
Rain eases noticeably as the dry season sets in.
☀️ Sunscreen✨ Best sightseeing weather
24° to 32°
Dry & Pleasant
Still part of the dry season, though occasional heavy rain is possible some years.
☀️ Sunscreen✨ Best sightseeing weather
25° to 33°
Dry & Hot
Dry and increasingly hot as the year moves toward its warmest stretch.
🥵 Heat protection☀️ Sunscreen
27° to 35°
Hot & Dry
Very hot, as the sheltered monsoon period brings dry air rather than rain.
🥵 Heat protection☀️ Sunscreen
27° to 35°
Hottest & Driest
The hottest and driest month of the year, dry inland air replacing the usual monsoon rain.
🥵 Heat protection☀️ Sunscreen
27° to 35°
Hot & Dry
Still very hot and dry, part of the sheltered mid-year stretch.
🥵 Heat protection☀️ Sunscreen
26° to 34°
Hot & Dry
Still hot and comparatively dry, rounding out the sheltered mid-year stretch.
🥵 Heat protection☀️ Sunscreen
26° to 34°
Rain Builds
Rain ticks up as the dry season gives way to the coming rains.
☔ Umbrella handy🥵 Heat protection
24° to 32°
Monsoon Arrives
Rain increases sharply as the northeast monsoon sets in.
☔ Heavy rain gear⚠️ Flash-flood aware
23° to 31°
Wettest Month
The rainiest month of the year, with an added risk of passing cyclones.
☔ Heavy rain gear⚠️ Flash-flood aware
22° to 30°
Deep Monsoon
Still very wet, closing out the year's worst rainy period, with an added risk of passing cyclones.
☔ Heavy rain gear⚠️ Flash-flood aware
★★★ peak season, ★★☆ decent shoulder months, ★☆☆ true off-peak, based on rain frequency, heat, and haze.
Frequently asked questions
When is monsoon season in Trincomalee?›
Trincomalee's heaviest rain historically falls from October through December, historically the worst stretch of the year, with November the wettest month, averaging around 376mm across 18 days, plus an added risk of cyclones.
What is the best time of year to visit Trincomalee?›
March through August is historically Trincomalee's dry season, though it gets very hot from around May onward.
What is the least favorable time to visit Trincomalee?›
November and December are historically the wettest months of the year, with an added risk of cyclones.
Which month has the most rain in Trincomalee?›
November is historically the wettest month, averaging around 376mm of rain across 18 days.
Which month is the driest in Trincomalee?›
June is historically the driest month, averaging around 25mm of rain.
How hot does Trincomalee get?›
June is historically the hottest month of the year on average, part of a hot stretch that runs roughly May to September.
What should I pack for Trincomalee during the rainy season?›
Rain gear is worth having from around October through December, and sun protection is worth packing year-round given the heat.
Why is Trincomalee's hottest season during the monsoon?›
Unlike much of Sri Lanka, Trincomalee is sheltered from the direct rains of the southwest monsoon by the island's interior mountains, so this period brings hot, dry air from inland instead of rain.
Is Pigeon Island near Trincomalee?›
Yes. This small marine national park just off Nilaveli Beach is popular for snorkeling among coral reefs and reef sharks.
Do cyclones affect Trincomalee?›
Trincomalee carries an added risk of cyclones, particularly around November and December, when storms can bring heavy rain and rough seas.