Prepare your trip for Koh Samui, THAILAND

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Koh Samui, THAILAND and its best beaches

Climate - Temperatures and rainfall - South China Sea

Beautiful beaches from THAILAND

Koh Samui: Temperatures during the day, at night, rain and bathing conditions

January
Day temperature 85F / 29C    |    Night temp. 76F / 24C    |    Bathing temperature 83F / 28C    |    Rain 138 mm    |      Conditions Bathing at 28 C
February
Day temperature 85F / 29C    |    Night temp. 76F / 24C    |    Bathing temperature 85F / 29C    |    Rain 052 mm    |      Conditions Bathing at 29 C
March 
Day temperature 88F / 31C    |    Night temp. 77F / 25C    |    Bathing temperature 86F / 30C    |    Rain 077 mm    |      Conditions Bathing at 30 C
April
Day temperature 90F / 32C    |    Night temp. 77F / 25C    |    Bathing temperature 86F / 30C    |    Rain 076 mm    |      Conditions Bathing at 30 C
May
Day temperature 90F / 32C    |    Night temp. 77F / 25C    |    Bathing temperature 86F / 30C    |    Rain 146 mm    |      Conditions Bathing at 30 C
June
Day temperature 90F / 32C    |    Night temp. 77F / 25C    |    Bathing temperature 86F / 30C    |    Rain 112 mm    |      Conditions Bathing at 30 C
July
Day temperature 90F / 32C    |    Night temp. 76F / 24C    |    Bathing temperature 85F / 29C    |    Rain 122 mm    |      Conditions Bathing at 29 C
August
Day temperature 90F / 32C    |    Night temp. 77F / 25C    |    Bathing temperature 85F / 29C    |    Rain 118 mm    |      Conditions Bathing at 29 C
September
Day temperature 88F / 31C    |    Night temp. 76F / 24C    |    Bathing temperature 85F / 29C    |    Rain 114 mm    |      Conditions Bathing at 29 C
October
Day temperature 86F / 30C    |    Night temp. 76F / 24C    |    Bathing temperature 85F / 29C    |    Rain 290 mm    |      Conditions Bathing at 29 C
November
Day temperature 85F / 29C    |    Night temp. 76F / 24C    |    Bathing temperature 85F / 29C    |    Rain 495 mm    |      Conditions Bathing at 29 C
December
Day temperature 85F / 29C    |    Night temp. 76F / 24C    |    Bathing temperature 83F / 28C    |    Rain 209 mm    |      Conditions Bathing at 28 C

Thailand : climate and when to go to Koh samui

The climate in Phuket and Koh Samui is very pleasant throughout the year, with temperatures varying between 77F at night and 93F during the day.

There are three seasons, the hot season from February to May, the rainy season from the end of September to November, and the "cool" season from October to January.

From February to October it average 32 to 38 degrees, but from July to September there may be some showers, but only for a few hours. The rainy season is often summed up in some "refreshing" tropical rain showers followed by the return of the sun. The climate is tropical so very wet throughout the year, but Samui always remains refreshed with a pleasant sea breeze coming from the Gulf.

When to go? The hottest month for the beach, lazing around and swimming is April. Check the precipitations because showers are possible but the sun returns quickly, otherwise other periods are possible. The coolest month is January, if you can not stand the heat too much. The driest month of the year is February, if you do not like the rain at all.

Click on Phuket - Koh Samui to display its climate.

Graphs and temperature curves with average precipitation over the year

     Monthly temperatures of Koh Samui, THAILAND     day    night  Koh Samui, THAILAND temperatures. A minimum temperature of 81F C is recommended for the beach!
     Precipitation, rainfall, cyclone: THAILAND
Precipitation, mean rainfall, cyclone period for Koh Samui, THAILAND
     Temperatures of bathing water around Koh Samui
South China Sea bathing temperature at Koh Samui, THAILAND. +79C is ideal for the beach!

  Landmarks

Sun   Perfect conditions to enjoy the beach.
Sun       Favorable conditions for enjoying the beach.
Sun and showers      Cloudy with sunny spells and thunderstorms.
Rain, showsers, storms or monsoons     Very strong tropical or monsoon rains.
Cyclone or hurricane/         Months at risk of cyclones with alerts level 1 to 5.
Sea bathing       Nice swimming at more than 26C / 79F.
Perfect trip  Everything is perfect for traveling.

No cyclone risk for this country
Risks of cyclones for THAILAND

Sunrise and Sunset in the Tropics
06:26 Sunrise                Sunset 6:28

South China Sea

Weather forcast $pays in $mois_en_cours - $oceans.
Climate March 2023

Koh Samui sunshine in summer and winter

Koh Samui, THAILANDin the southern hemisphere in winter
Koh Samui, THAILANDin the northern hemisphere in summer
Koh Samui annual sunshine

The sun at its zenith, that means well perpendicular to the surface of the Earth, sending 100% of radiation and heat. Koh Samui receives in winter (january),  83%  of sun power and  97%  during summer time (july).

The average temperature and sunshine deviations between summer and winter are 14%. This small gap means that the temperature at sea does not really vary and that the sea remains warm enough in summer and winter. The air is also hot all year round without great thermal amplitude.

showing the annual performance of Koh Samui for bathing and lazing around on the beaches.  

Average temperatures and rainfall for a stay in March

Cyclone, monsoon, tropical rainfall and showers index
On the left, the averages observed every month of March on the Thailand beaches. The trends for next month are, slightly warmer daytime temperatures, a bathing water in South China Sea remaining at a stable temperature, less rainfall with nights as temperate as this month.

Sunset and sunrise times for THAILAND


Local time : March 2023, Monday 20, 08:05 AM
Sunrise time : 06:26 am, point A
Sunset time : 6:28 pm, point B
Duration of daylight : 12:02 / 24:00
Jet lag : GMT+7
Sunset and sunrise from THAILAND


The average monthly UV index of THAILAND



What is the period of mosquitoes virulence over the year?

Presence of mosquitoes 9/10 at Koh Samui.


Weather forecast for Koh Samui

Here are the current 5-day forecasts for Ban Bang Rak / Koh Samui. Temperatures are spaced 3 hours apart for each day. The summary of the state of the sky gives the trend of the week. The sea temperature at is a monthly average. In lagoons or seashores where the bathing water is shallow, you can add some degrees.



Tuesday
March 21, 2023
7 am

81.9F
28C

Overcast clouds
Humidity 75%
Sea 86F/30C


Tuesday
March 21, 2023
10 am

82.2F
28C

Overcast clouds
Humidity 75%
Sea 86F/30C


Tuesday
March 21, 2023
1 pm

82.1F
28C

Overcast clouds
Humidity 76%
Sea 86F/30C


Tuesday
March 21, 2023
4 pm

82.1F
28C

Overcast clouds
Humidity 77%
Sea 86F/30C


Tuesday
March 21, 2023
7 pm

82.1F
28C

Overcast clouds
Humidity 77%
Sea 86F/30C


Tuesday
March 21, 2023
10 pm

80.9F
28C

Overcast clouds
Humidity 79%
Sea 86F/30C



Wednesday
March 22, 2023
7 am

81.8F
28C

Broken clouds
Humidity 75%
Sea 86F/30C


Wednesday
March 22, 2023
10 am

82.6F
29C

Few clouds
Humidity 74%
Sea 86F/30C


Wednesday
March 22, 2023
1 pm

83.4F
29C

Clear sky
Humidity 73%
Sea 86F/30C


Wednesday
March 22, 2023
4 pm

82.6F
29C

Clear sky
Humidity 76%
Sea 86F/30C


Wednesday
March 22, 2023
7 pm

82.1F
28C

Clear sky
Humidity 77%
Sea 86F/30C


Wednesday
March 22, 2023
10 pm

81.3F
28C

Clear sky
Humidity 78%
Sea 86F/30C



Thrusday
March 23, 2023
7 am

82F
28C

Scattered clouds
Humidity 77%
Sea 86F/30C


Thrusday
March 23, 2023
10 am

83.4F
29C

Clear sky
Humidity 76%
Sea 86F/30C


Thrusday
March 23, 2023
1 pm

83.1F
29C

Scattered clouds
Humidity 76%
Sea 86F/30C


Thrusday
March 23, 2023
4 pm

83F
29C

Overcast clouds
Humidity 75%
Sea 86F/30C


Thrusday
March 23, 2023
7 pm

82.4F
29C

Broken clouds
Humidity 77%
Sea 86F/30C


Thrusday
March 23, 2023
10 pm

81.6F
28C

Overcast clouds
Humidity 79%
Sea 86F/30C



Friday
March 24, 2023
7 am

82.2F
28C

Overcast clouds
Humidity 76%
Sea 86F/30C


Friday
March 24, 2023
10 am

83.2F
29C

Broken clouds
Humidity 73%
Sea 86F/30C


Friday
March 24, 2023
1 pm

83.2F
29C

Broken clouds
Humidity 76%
Sea 86F/30C


Friday
March 24, 2023
4 pm

82.5F
29C

Broken clouds
Humidity 76%
Sea 86F/30C


Friday
March 24, 2023
7 pm

82.2F
28C

Scattered clouds
Humidity 76%
Sea 86F/30C


Friday
March 24, 2023
10 pm

81.4F
28C

Overcast clouds
Humidity 78%
Sea 86F/30C



Saturday
March 25, 2023
7 am

81.6F
28C

Scattered clouds
Humidity 75%
Sea 86F/30C


Saturday
March 25, 2023
10 am

83.2F
29C

Scattered clouds
Humidity 71%
Sea 86F/30C


Saturday
March 25, 2023
1 pm

83F
29C

Few clouds
Humidity 73%
Sea 86F/30C



Weather uncertainties 2023 to go to Koh Samui ?

Stormy risks under tropics

Risks of tropical rains and showers
In the tropics, these storm or rain pictograms indicate that tropical showers or stormy weather are possible. It is difficult to predict the exact local weather in the tropics. This is especially true by the sea and the beach. Consider that more than 180 mm of rain per month is the limit to enjoy the beach on vacation. So check this data provided for each month on the preferred destinations of this site.

When traveling in the tropics as a seaside, rain is not welcome. If you see this indicator, with possible storms, that does not mean that it will rain all day long. When we observe the local rainfall, it is either really zero or very weak. Meteorologists prefer to be pessimistic. So observe below, the skies photographed during a week announced stormy in Asia. It did not rain once. I invite you to integrate this parameter before going to Koh Samui for a good trip to the sun!

Stormy or rainy weather under tropics
Stormy or rainy weather under tropics

Stormy or rainy weather under tropics
Stormy or rainy weather under tropics

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