Water temperature in Khao Lak

This data the coastal Khao Lak sea water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.

Current sea temperature in Khao Lak

Water temperature in Khao Lak today is 29.3°C. Based on our historical data over a period of ten years, the warmest water in this day in the Andaman Sea near Khao Lak was recorded in 2017 and was 29.9°C, and the coldest was recorded in 2016 at 28.8°C. Sea water temperature in Khao Lak is expected to drop to 28.8°C in the next 10 days. September average water temperature in Khao Lak is 28.8°C, the minimum temperature is 27.1°C, and the maximum is 30.1°C.

The swimming season in Khao Lak lasts from January to December, twelve months per year! During those months, Khao Lak water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Khao Lak in winter reaches 28.8°C, in spring 30°C, in summer the average temperature rises to 29.3°C, and in autumn it is 29°C.

Khao Lak water temperature now

The sea salinity in Khao Lak is 32.02‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Khao Lak for today

Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Khao Lak. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Khao Lak. Data in table shown for 6 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Khao Lak

Khao Lak weather forecast

Current temperature and weather

Data in a table show Khao Lak temperature today (6 September 2025). For more information and forecast for a few days, go to the weather forecast Khao Lak.

0-3 h	3-6 h	6-9 h	9-12 h
26.6°C	25.9°C	26.1°C	27.4°C

12-15 h	15-18 h	18-21 h	21-24 h
27.8°C	27.4°C	26.6°C	26.5°C

Khao Lak water temperature by month

These figures shows the average, minimum and maximum monthly sea temperature in Khao Lak. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Khao Lak on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve

Chart monthly average water temperature in Khao Lak

The nearest beaches and cities from Khao Lak with the water temperature today, as well as the air temperature and the state of the weather during the day and the average wave height for today

	Water	Weather		Wave
Mai Khao Beach	28.9°C	28°C		0.67 m
Nai Yang Beach	28.9°C	28°C		0.7 m
Similan Islands	28.9°C	27°C		1.28 m
Nai Yang	28.8°C	28°C		0.99 m
Banana Beach	28.8°C	28°C		1.07 m
Nai Thon Beach	28.8°C	28°C		1.07 m
Ko Yao	29.1°C	28°C		0.34 m
Bangtao Beach	28.8°C	28°C		1.13 m
Surin Beach	28.8°C	28°C		0.87 m
Kamala Beach	28.7°C	28°C		1.13 m

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Our report for Khao Lak is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.