Lamai Beach

Faces east. Come for the sunrise, not the snorkelling.

How we rated it: nothing lifts it and nothing sinks it. Photo: Christophe95 · CC BY-SA 4.0

The hang

Lamai is on Ko Samui's southeast coast, about 6 km south of Chaweng and 25 to 30 minutes from the airport, and it faces east, so come for the sunrise. We measured 3,356 metres of it. There is no entrance fee and no set hours, and parking at the public entry point is free if you find a space. Expect stones and broken shells in patches and waves a touch livelier than Chaweng's. The snorkelling is poor. October to December bring the heaviest rain and the roughest sea; December to March is the crush.

The real intel

Best months · warmest sea: May (31.4 °C), then June and April. Coolest: January (28.1 °C). One year of data, 2025.
Best months · emptiest: Outside December to March. October to December is the wet and rough season.
Getting there: On Ko Samui's southeast coast, about 25 to 30 minutes by car from the airport, roughly 6 km south of Chaweng on the ring road.
Cost reality: No entrance fee. Free parking at the public entry point, if there is space.
The catch nobody tells you: Stones and broken shells in patches, livelier waves than Chaweng, and almost nothing to see underwater.

The year at Lamai Beach

Warmest sea in May. Fewest wet days in January. Pick your fight.

Sea (°C)

28.1

28.9

29.7

30.8

31.4

30.9

30.8

30.7

30.3

30.2

28.3

Air (°C)

26.1

26.5

27.5

28.1

27.8

28.4

29.4

28.1

27.2

26.5

26.3

Sun (h/day)

10.8

10.5

11.1

10.6

9.3

9.8

9.2

9.5

7.8

8.7

9.9

Rain (days)

One year of data, 2025, from Open-Meteo at this beach's coordinates. A rain day is 1 mm or more. The red bar is the month to aim for in each row.

The neighbours

6 beaches within 6 km, as the gull flies.

2.1 kmThong Takhian Beach (Silver Beach)248 m of beach, measured. Not rated yet.
2.1 kmRocky's Beach512 m of beach, measured. Not rated yet.
2.5 kmSilver Beach286 m of beach, measured. Not rated yet.
3.2 kmCoral Cove Beach190 m of beach, measured. Not rated yet.
4.6 kmNatien Beach1,840 m of beach, measured. Not rated yet.
4.6 kmChaweng Noi Beach1,072 m of beach, measured. Not rated yet.

Straight-line distances from the mapped beach shapes (OpenStreetMap). Roads are longer, and in Bali they are much longer.

The crowd

December to March is the crush.

The facts · we measured

Length: 3,356 m
Mean width: 25.2 m
Area: 84,471 m²
Warmest sea (2025): 31.4 °C in May
Coldest sea (2025): 28.1 °C in Jan
Sea by month, °C: Jan 28.1 · Feb 28.9 · Mar 29.7 · Apr 30.8 · May 31.4 · Jun 30.9 · Jul 30.8 · Aug 30.7 · Sep 30.3 · Oct 30.2 · Nov 29.0 · Dec 28.3