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Koh Samui

Koh Samui Weather January

To help you choose the best time to travel, you can find climate data below on the weather on Koh Samui in January.

day temperatureaverage daily high+29°C
night temperatureaverage daily low+24.2°C
sea temperaturesea temperature+27°C
day lengthdaytime12 h
sunny hours per daysunny / overcast hours6.4 / 5.6
average monthly precipitationaverage monthly precipitation86 mm

High season with the best weather conditions for the beach leisure on Koh Samui are typically January, February.

Best places in January

Temperature on Koh Samui

In January the average daily maximum on Koh Samui is +29°C, and the minimum +24.2°C.

The hottest January day on record is +33.4°C, and the coldest +18.6°C.

Most booked hotels on Koh Samui

Search flights to Koh Samui

Best beach resorts in January:

Cape Town
South Africa




Playa del Carmen

Puerto Vallarta


Punta Cana
Dominican Republic

San Juan
Puerto Rico

South Africa

Panama City

Saudi Arabia

Daylight hours

There are 12 hours of daylight on Koh Samui in January. Out of these, on average 6.4 are sunny, which means there is quite a lot of sun.

Most Popular Destinations in the World

Sea temperature

The average monthly temperature in the Gulf of Thailand on the beaches of Koh Samui in January is +27°C.

The water is not only warm enough to bathe in, but it is also possible to stay in the water for an extended amount of time.

Koh Samui climate by month


The amount of precipitation on Koh Samui in January is usually 86 mm, which may cause a change of plans on certain days.

Beach resorts in Thailand