Is Trincomalee & East Sri Lanka good for beginner divers?

Yes, partly: 7 of the 12 dive sites we document are suited to Open Water divers, including Boiler Wrecks, Eel Rock and Pigeon Island West. The others need more experience or a higher certification.

What is the water temperature in Trincomalee & East Sri Lanka?

The water is usually between 27 °C and 30 °C over the year.

What marine life can you see in Trincomalee & East Sri Lanka?

Divers regularly see blacktip reef sharks, turtles, stingrays, nudibranchs, octopus and groupers.

Trincomalee & East Sri Lanka

Diving in Sri Lanka

12 documented dive sites, 7 of them for Open Water divers. Known for blacktip reef sharks, turtles and stingrays.

Best months: Mar–Sep
Water: 27–30 °C
Levels: Open Water, Advanced, Technical
Nearest airport: TRR

When to go

Pick a month: the diving season, from published sources, and the typical weather.

Pick a month

Best
Good
Possible
Closed
Not documented yet

Trincomalee & East Sri Lanka in October

Good season

Sea: 30 °C; at the surface
Air: 31 °C; 25 °C at night
Rain: 300 mm; one of the wettest months
Wind: 11 km/h; on average

The warmest water of the year.

Typical weather, not a forecast: averages for 2021–2025 (air, rain, wind) and 2023–2025 (sea), data from Open-Meteo (ERA5 / Copernicus, Météo-France). Covers an area of roughly 10 to 25 km around the destination.

East-coast season is the opposite of the west/south coast. PADI: season February to mid-October, best March–April (30+ m visibility, 29–30 °C, no current). Divernet and PADI blog: best May to October; Sri Lanka Diving Tours restarts east-coast diving in mid-February and runs Pigeon Island trips mid-February to October. Nov–Jan is shown as possible (north-east monsoon; Wikipedia: most rain Oct–Mar); no source explicitly says all operators close, but the season window excludes these months.

Source: padi.com

Dive sites in Trincomalee & East Sri Lanka

From the easiest to the most demanding. Levels with a dashed outline are estimates we are still verifying.

Open Water friendly

usual dive down to 18 m7 sites

Wreck

down to 8 m

Boiler Wrecks

Coral-covered boiler wrecks at 4-8 m off Batticaloa, used for Open Water training and Discover Scuba dives.

Open Water

Reef

down to 18 m

Eel Rock

A 12-18 m rock 2.5 km from Uppuveli, known locally for its moray eels.

Open Water
Moray eels

Reef

down to 12 m

Pigeon Island West

Shallow 1-12 m reef at Pigeon Island West with table, staghorn, leaf, brain and mushroom soft corals.

Open Water
Blacktip reef sharks

Reef

down to 12 m

Sardine Tooth

A 1-12 m reef known in Tamil as Sala pallu, famous for its soft corals.

Open Water

Wreck

down to 15 m

SS Lady McCullam (Kayankerni Reef)

A 1908 passenger-cargo ship that sank on Kayankerni Reef in 1926, now a 13-15 m wreck popular with new divers.

Open Water

Reef

down to 16 m

Swami Rock West

The west side of Swami Rock, 3-16 m, which a Trincomalee operator calls a very good Open Water training site.

Open Water

Reef

down to 10 m

Uppuveli House Reef

A 5-10 m house reef 1 km off Uppuveli beach, noted by a local operator for excellent corals.

Open Water

For Advanced divers

usual dive down to 30 m3 sites

Wreck

down to 25 m

SS British Sergeant

A 1942 WWII tanker wreck in two sections on sand at 24 m off Pasikudah, home to lionfish, grouper, morays and nudibranchs.

Advanced
Nudibranchs

Wreck

down to 24 m

SLNS Weeraya

A Sri Lankan navy gun boat sunk off Trincomalee in 2020, 11-24 m, with the Shanghai-class SLNS Jagatha 10-20 m away.

Advanced

Reef

down to 25 m

Swami Rock

Rays, morays and pufferfish around underwater statues on a 5-24 m dive below Trincomalee's Swami Rock.

Advanced
Moray eels

Technical and specialty dives

2 sites

Wreck

down to 55 m

HMS Hermes

The world's first purpose-designed aircraft carrier, lying 40-53 m off Batticaloa and a designated war grave.

Technical

Wreck

down to 42 m

HMS Hollyhock

Technical

Marine life

When the big encounters happen, month by month.

Reported here, season not documented yet:

Blacktip reef sharks
Turtles
Stingrays
Nudibranchs
Octopus
Groupers
Lionfish
Moray eels
Corals
Blue whales
Sperm whales
Dolphins
Barracuda
Cuttlefish
Frogfish
Scorpionfish

Where is Trincomalee & East Sri Lanka?

View on OpenStreetMapLocation: Trincomalee (Wikipedia)Map: Natural Earth

Nearest airport: TRR

Trincomalee & East Sri Lanka: frequently asked questions

When is the best time to dive Trincomalee & East Sri Lanka?: The best months to dive Trincomalee & East Sri Lanka are Mar–Sep. East-coast season is the opposite of the west/south coast. PADI: season February to mid-October, best March–April (30+ m visibility, 29–30 °C, no current). Divernet and PADI blog: best May to October; Sri Lanka Diving Tours restarts east-coast diving in mid-February and runs Pigeon Island trips mid-February to October. Nov–Jan is shown as possible (north-east monsoon; Wikipedia: most rain Oct–Mar); no source explicitly says all operators close, but the season window excludes these months.
Is Trincomalee & East Sri Lanka good for beginner divers?: Yes, partly: 7 of the 12 dive sites we document are suited to Open Water divers, including Boiler Wrecks, Eel Rock and Pigeon Island West. The others need more experience or a higher certification.
What is the water temperature in Trincomalee & East Sri Lanka?: The water is usually between 27 °C and 30 °C over the year.
What marine life can you see in Trincomalee & East Sri Lanka?: Divers regularly see blacktip reef sharks, turtles, stingrays, nudibranchs, octopus and groupers.
How do you dive Trincomalee & East Sri Lanka?: The nearest airport is TRR.

About this page

Seasons and marine life come from the sources below. Site levels and depths marked as estimated come from our original catalogue and are being checked one by one. Conditions change: always confirm with a local dive centre.

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Photo: Sarah Lee on Unsplash

Photo credits

Sunlight and bubbles in deep blue water, Sarah Lee, Unsplash License, on Unsplash