Lamai Beach Weather & Climate: Best Time to Visit

Average temperatures, rainfall, sunshine and the best time to visit Lamai Beach.

Climate overview of Lamai Beach

The climate in Lamai Beach, Koh Samui, Thailand, is remarkably consistent, with temperatures year-round averaging 30°C (86°F). The warmest month is May at 31°C (88°F), and the coolest is January at 29°C (84°F).

The city receives considerable rainfall, with around 1658 mm (65 in) annually. November is the wettest month. Sunshine peaks in March, when the city sees around 8.0 hours of sunshine per day.

Lamai Beach Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Lamai Beach — and find the best time to visit.

Monthly Temperature in Lamai Beach

In Lamai Beach temperatures are generally consistent throughout the year. Typically, average maximum daytime temperatures range from a very warm 31°C (88°F) in May to a comfortable 29°C (84°F) in the coolest month, January.

Nights vary from 28°C (82°F) in May to around 26°C (79°F) during the colder months.

Check out our detailed temperature page for more information.

Temperature ranges by month

Rainfall in Lamai Beach

Lamai Beach experiences significant rainfall throughout the year, averaging 1658 mm (65 in) of precipitation annually. The climate in Lamai Beach shows significant variation throughout the year. Expect heavy rainfall in November, the wettest month, with an average of 302 mm (12 in) of precipitation over 19 rainy days.

In contrast, the driest month February offers drier and sunnier days, with around 46 mm (1.8 in) of rainfall over 5 rainy days. For more details, please visit our Lamai Beach Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

Sunshine Hours in Lamai Beach

For those who appreciate different seasons, Lamai Beach serves as an ideal destination. Expect longer, more sun-filled days in March with an average of 8.0 hours of sunshine daily, and embrace the darker days in September, offering only 4.8 hours of daily sunlight.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: Koh Samui, Thailand (14 KM, 8 Miles).

Daily hours of sunshine

Data from: Koh Samui, Thailand (14 KM, 8 Miles).

Water Temperature in Lamai Beach

The mean water temperature over the year ranges from 27°C (81°F) in January to 30°C (86°F) in April.

Water temperature over the year

Data from: Koh Samui, Thailand (14 KM, 8 Miles).

Humidity in Lamai Beach by Month

Best Time to Visit Lamai Beach

The warm weather in Lamai Beach maintains temperatures between 29°C (84°F) and 31°C (88°F) year-round. Plan your visit during February for drier days and the best conditions to enjoy being outside.

To make the most of your visit, consider exploring early in the morning or during the pleasant late afternoon hours when the temperature is most comfortable.

Be aware that October and November constitute the rainy season, with significant precipitation.

Planning your next adventure but unsure where to go? Our climate tool suggests perfect locations tailored to your preferred weather conditions. Discover your ideal travel destination with our weather planner.

Frequently asked questions about the climate in Lamai Beach

What is the best time to visit Lamai Beach?

January and February typically offer the most optimal weather in Lamai Beach. In contrast, October and November tend to have less optimal conditions.

What temperatures can I expect in Lamai Beach?

Daytime highs range from 29°C (84°F) in January to 31°C (88°F) in May. Nighttime lows range from 26°C (79°F) to 28°C (82°F). Temperatures stay relatively stable year-round.

How much rain does Lamai Beach get?

Annual rainfall is around 1658 mm (65 in). November is the wettest month with 302 mm (12 in), while February is the driest with 46 mm (1.8 in).

How sunny is Lamai Beach?

Lamai Beach receives around 2,151 hours of sunshine per year. March is the sunniest month with 240 hours, while September is the cloudiest with just 145 hours. Overall, Lamai Beach enjoys abundant sunshine.

Lamai Beach 3-Day Forecast

Lamai Beach 3-Day Forecast

Lamai Beach on the map

Lamai Beach is highlighted — select any city to see its climate.

Popular this month

Where to go in July — average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.