Koh Samui

Koh Samui Weather in April

Average temperatures, rainfall, sunshine and the best places to visit in Koh Samui, Thailand in April.

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Chaweng Beach Lamai Beach Bophut Choeng Mon Beach

Planning a getaway to Koh Samui, Thailand this April and curious about the weather you should prepare for? Discover all the vital details you need on this page, solving your puzzle:

What to Expect in Koh Samui in April

Koh Samui, Thailand is a region in Thailand. April in Koh Samui generally has very warm temperatures, with high precipitation.

Temperatures

The average maximum temperatures are very warm and range from 30°C (86°F) in Chaweng Beach to 35°C (95°F) in Suratthani. Nighttime temperatures generally drop to 26°C (79°F) in Suratthani and 28°C (82°F) in Chaweng Beach. While the given temperatures for day and night are typical, there may be days that feel warmer. Make sure you're dressed in a way that keeps you cool and comfortable.

For specific regional insights in Koh Samui, Thailand, refer to the map provided below.

Precipitation

In April, precipitation varies across different areas. From high rainfall in Lipa Noi with an average of 106 mm (4.2 in) to high rainfall in Suratthani with 143 mm (5.6 in).

Average sunshine

April brings good sunshine to many areas. Chaweng Beach sees around 201 hours of sunlight, great for visitors looking for bright days.

Explore Koh Samui by month

Pick a month to see the average temperature, rainfall and sunshine in Koh Samui — and find the best time to visit. (based on Chaweng Beach)

January28°C (82°F) February29°C (84°F) March30°C (86°F) April30°C (86°F) May31°C (88°F) June31°C (88°F) This monthJuly30°C (86°F) August30°C (86°F) September30°C (86°F) October29°C (84°F) November29°C (84°F) December29°C (84°F)
Best Time to Visit Koh Samui →

Best Places to Visit in Koh Samui in April

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Koh Samui.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Koh Samui

What is the weather like in April for some of the most popular destinations in Koh Samui, Thailand?

Temperature range in Koh Samui (April)

Precipitation variation in Koh Samui (April)

Chaweng Beach

In April Chaweng Beach generally has very high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 28°C (82°F) and high monthly rainfall. So on average the conditions are tolerable that month.

« March
April
May »
March
April
May
Max temperature
30°C (86°F)
30°C (86°F)
31°C (88°F)
Min temperature
27°C (81°F)
28°C (82°F)
28°C (82°F)
Monthly sun hours
240 hours
201 hours
193 hours
Monthly rainfall
96 mm (3.8 in)
109 mm (4.3 in)
131 mm (5.2 in)
Monthly rainy days
5 days
8 days
17 days
Weather conditions
pleasant
tolerable
tolerable
Climate in Chaweng Beach →

Lamai Beach

In April Lamai Beach generally has very high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 28°C (82°F) and high monthly rainfall. So on average the conditions are tolerable that month.

« March
April
May »
March
April
May
Max temperature
30°C (86°F)
30°C (86°F)
31°C (88°F)
Min temperature
27°C (81°F)
28°C (82°F)
28°C (82°F)
Monthly sun hours
240 hours
201 hours
193 hours
Monthly rainfall
97 mm (3.8 in)
109 mm (4.3 in)
124 mm (4.9 in)
Monthly rainy days
5 days
8 days
17 days
Weather conditions
pleasant
tolerable
tolerable
Climate in Lamai Beach →

Bophut

In April Bophut generally has very high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 28°C (82°F) and high monthly rainfall. So on average the conditions are tolerable that month.

« March
April
May »
March
April
May
Max temperature
30°C (86°F)
30°C (86°F)
31°C (88°F)
Min temperature
27°C (81°F)
28°C (82°F)
28°C (82°F)
Monthly sun hours
240 hours
201 hours
193 hours
Monthly rainfall
95 mm (3.7 in)
108 mm (4.3 in)
134 mm (5.3 in)
Monthly rainy days
5 days
8 days
17 days
Weather conditions
pleasant
tolerable
tolerable
Climate in Bophut →

Choeng Mon Beach

In April Choeng Mon Beach generally has very high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 28°C (82°F) and high monthly rainfall. So on average the conditions are tolerable that month.

« March
April
May »
March
April
May
Max temperature
30°C (86°F)
30°C (86°F)
31°C (88°F)
Min temperature
27°C (81°F)
28°C (82°F)
28°C (82°F)
Monthly sun hours
240 hours
201 hours
193 hours
Monthly rainfall
95 mm (3.7 in)
109 mm (4.3 in)
137 mm (5.4 in)
Monthly rainy days
5 days
8 days
17 days
Weather conditions
pleasant
tolerable
tolerable
Climate in Choeng Mon Beach →

Mae Nam Beach

In April Mae Nam Beach generally has very high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 28°C (82°F) and high monthly rainfall. So on average the conditions are tolerable that month.

« March
April
May »
March
April
May
Max temperature
30°C (86°F)
30°C (86°F)
31°C (88°F)
Min temperature
27°C (81°F)
28°C (82°F)
28°C (82°F)
Monthly sun hours
240 hours
201 hours
193 hours
Monthly rainfall
95 mm (3.7 in)
108 mm (4.3 in)
134 mm (5.3 in)
Monthly rainy days
5 days
8 days
17 days
Weather conditions
pleasant
tolerable
tolerable
Climate in Mae Nam Beach →

Is your destination not in the list? Have a look at all destinations in Koh Samui, in Thailand.

In our records: Thailand April extremes

Notable April records observed across cities in Thailand in our climate database (1976 – 2026). Historic readings can vary in quality, so treat these as illustrative.

  • In our records, the warmest April day in Thailand reached 44°C (111°F) in Phitsanulok on April 24, 2016.

Popular cities in April

Day & night temperatures, rainfall and average weather in Koh Samui in April.

City Weather Day temp Night temp Rainfall
Chaweng Beach 30°C (86°F) 28°C (82°F) 109 mm (4.3 in)
Lamai Beach 30°C (86°F) 28°C (82°F) 109 mm (4.3 in)
Bophut 30°C (86°F) 28°C (82°F) 108 mm (4.3 in)
Choeng Mon Beach 30°C (86°F) 28°C (82°F) 109 mm (4.3 in)
Mae Nam Beach 30°C (86°F) 28°C (82°F) 108 mm (4.3 in)
Bangrak Beach 30°C (86°F) 28°C (82°F) 109 mm (4.3 in)

Koh Samui weather in April: frequently asked questions

What is the weather like in Koh Samui, Thailand in April?

Koh Samui, Thailand typically experiences unpleasant weather in April, part of the season. Daytime highs in Chaweng Beach average around 30°C (86°F), and temperatures drop to about 28°C (82°F) at night.

What is the average temperature in Koh Samui, Thailand in April?

Chaweng Beach averages a daytime maximum of 30°C (86°F) in April, with overnight lows close to 28°C (82°F).

Does Koh Samui, Thailand get a lot of rain in April?

Chaweng Beach typically receives notable rainfall in April, about 109 mm (4.3 in) on average across Koh Samui, Thailand.

Is April a Good Time to Visit Koh Samui, Thailand?

In our opinion, April is a good time to visit Koh Samui, Thailand with overall tolerable weather in Chaweng Beach.

Generally speaking, January and February provide perfect weather in Chaweng Beach. In contrast, October and November tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in Koh Samui.

Weather and climate has detailed information for every country in the world. Are you going to Thailand? Get detailed historical weather averages for many cities in Thailand.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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