Best time to visit Ko Lanta

The best time to visit Ko Lanta for a beach holiday is during January.

However, anytime during the dry season from early-December through to early-March is good when skies are clear and sunny and the temperature averages 28°C (82°F).

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Ko Lanta weather

Ko Lanta has a hot tropical climate with a distinct wet and dry season. The temperature typically ranges from a low of 24°C (75°F) to a high of 33°C (91°F).

Snorkelling, sunbathing and water sports are best between December and March.

What is the best month to visit Ko Lanta?
January and February are the best months to visit Ko Lanta – since these months see the least rainfall during the year.

While December and March are good alternative months.

Which is the hottest month in Ko Lanta?
April is the hottest month in Ko Lanta with an average maximum high of 33°C (91°F) with very high heat and humidity, and a night-time low of 25°C (77°F).

February through April is usually the hottest time of year in Ko Lanta, with an average daily high temperature above 33°C (91°F).

Which is the coolest month in Ko Lanta?
The coldest month of the year in Ko Lanta is December, with an average low of 24°C (75°F) and high of 30°C (86°F).

The cool season lasts from September through to December, with an average daily high temperature below 31°C (87°F).

When is it sunniest in Ko Lanta?
The sunniest time of year in Ko Lanta is normally February with nine hours of bright sunshine every day – that's on average 78% of daylight hours.

What is the humidity in Ko Lanta?
Ko Lanta experiences little significant seasonal variation in perceived humidity, with approximate average relative humidity calculated at between 67% – 81% over the course of the year.

What do the humidity conditions feel like in Ko Lanta?
We derive the humidity comfort level – what conditions feel like – from the dew point temperature, which measures moisture content in the atmosphere: a higher dew point feels more humid, while a lower dew point feels drier.

Meteorologists agree that dew point temperature is a more consistant indication of 'absolute humidity' than relative humidity, which fluctuates with temperature. 

The average annual dew point in Ko Lanta is 24°C (75°F), and varies over the course of the year from humid at 22°C (71°F) to muggy at 25°C (77°F).   

Typically, it's humid all year round – almost every day feels muggy.

When is the sea warmest in Ko Lanta?
The sea is usually at its warmest in Ko Lanta in May when the water temperature reaches 30°C (86°F), which is very pleasant for swimming.

The sea is warm enough to swim year-round in Ko Lanta.

Which month has the most rain in Ko Lanta?
September is the wettest month in Ko Lanta with an average rainfall of 290mm (11in), distributed across 20 days in September.

The wet season typically lasts from mid-April to early-December, with a greater than 37% chance of a given day being a wet day. During this time you can expect frequent but brief heavy downpours interspersed with sunny skies.

Rain falls throughout the year in Ko Lanta usually in late afternoon or early evening.

The dry season lasts from early-December to mid-April, with little to no rainfall and an average daily high temperature above 33°C (91°F). February sees the fewest wet days in Ko Lanta.

Which is the windiest month in Ko Lanta?
The windiest month of the year in Ko Lanta is August, with an average hourly wind speed of 12 kilometres per hour (7.5 mph; 6.5 knots).

The windy part of the year lasts from June through September, with average wind speeds of more than 10 kilometres per hour (6 mph; 5 knots).

The less-windy time of year lasts from early-October through to late-May. The calmest month of the year in Ko Lanta is April, with an average hourly wind speed of eight kilometres per hour (5 mph; 4 knots).

The predominant average hourly wind direction varies throughout the year in Ko Lanta.

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Ko Lanta Weather Averages

Holiday seasons

High season: November to April.

Low season: May to October brings less crowds, cheaper accommodation and, as the locals are quick to point out, it does not rain all day.

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Source: Meteorological data for Ko Lanta is based on weather statistics gathered for the 30-year period 1991 to 2020 by the Thai Meteorological Department at the closest weather stations: Krabi International Airport (KBV), located about 70km (43mi) north of Ko Lanta. This station is deemed sufficiently nearby to be relied upon as the primary source for historical climate records, although weather conditions in Ko Lanta may vary slightly.

Advice on the best time to visit a particular destination is based on average local weather statistics, when the weather conditions are generally better than at other times of the year. We consider high and low temperatures, risk of rain (and thunderstorms, etc.), amount of sunshine and sea temperature. For general outdoor activities we favour clear, rainless days with a temperature range between 18°C (64°F) and 27°C (80°F); and for hot-weather activities we favour clear, rainless days with a temperature range between 24°C (75°F) and 32°C (89°F). Often, the best times to visit correspond to high season and therefore involve higher prices.

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Latest update: Best time to visit Ko Lanta: 17 May, 2024

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Disclaimer: The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data and conditions at any given location and time are unpredictable and variable. We assume no responsibility and can not be held legally responsible for any decisions made on the basis of the information presented on this site.

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