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Lamai Beach Weather in August

Thinking of visiting Lamai Beach in August? Expect very high temperatures reaching 30°C (86°F) during the day, dropping to 27°C (81°F) at night, and note that quite a bit of rainfall is likely.

Rainfall in Lamai Beach in August

Typically around 17 days of rainfall are expected, averaging 99 mm (3.9 in) for the month. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.

Temperature in Lamai Beach in August

Daytime highs in Lamai Beach in August reach 30°C (86°F), with nights around 27°C (81°F). The hottest part of the day is usually in the afternoon, so lighter clothing can help you stay comfortable. With lows of 27°C (81°F), it stays warm throughout the night. A cold shower before going to sleep is one of the easiest ways to cool down before bed.

Sunshine in Lamai Beach in August

The month brings about 152 hours of sunlight, offering a comfortable mix of sun and overcast.

Average water temperature in August

At 29°C (84°F), the water is very warm — more like a heated pool than the sea. Great for those who like warm water, though some may find it less refreshing on a hot day.

If you prefer dry days with pleasant temperatures, January and February typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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For a detailed overview over the year and the best time to visit Thailand, check out our Lamai Beach's climate page.

Lamai Beach Temperature in August

Min TemperatureMin Temperature 27°C (81°F)  
Max TemperatureMax Temperature 30°C (86°F)  
Water TemperatureWater Temperature 29°C (84°F) *  
Chance of RainChance of Rain 55%  
PrecipitationPrecipitation 99 mm (3.9 in)  
Rainy daysRainy days 17 days  
HumidityHumidity 78% *  
SunshineSunshine 152 hours *  
Percentage SunshinePercentage Sunshine *  
* Data from: Koh Samui, Thailand (14 KM, 8 Miles).

Daily Historical Temperatures

49-year average (1976-2025)

Based on our historical records, temperatures in Lamai Beach typically stay consistent throughout August, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 26°C (79°F).

Average temperatures in August

Daily Historical Precipitation

49-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in August

Historical weather for Lamai Beach in August

Browse day-by-day weather records for Lamai Beach spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Lamai Beach historical weather extremes in August

Based on 43 years of weather observations in Lamai Beach between 1982 and 2025, these are the recorded extremes.

  • The warmest day in August was on August 4, 1990, with a maximum of 40°C (104°F).
  • Lamai Beach experienced its chilliest August day on August 24, 1997, reaching only 25°C (77°F).
  • Nighttime temperatures dropped to 22°C (72°F) on August 31, 1995, marking the coldest August night on record.

Best Places in Thailand in August

Find out more about the weather in Thailand and which places have the best travel conditions in this month. See all of Thailand in August →

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in Lamai Beach in August

Warm weather calls for comfortable, breathable clothing in August. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. With water temperatures around 29°C (84°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Lamai Beach in August

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming
7/10
Cycling
7/10
Walking
7/10
Camping
7/10
Outdoor sports
7/10

Select a Month

Check the conditions for any month of the year.

For a detailed overview over the year and the best time to visit Thailand, check out our Lamai Beach's climate page.

More climate data for Lamai Beach