Sunheron logo
SunheronYour holiday finder
Where to travel
Find best place for you ->
Find destination...
°C°F

Thailand

Southeast Thailand weather in May 2026

Thailand

Southeast Thailand weather in May 2026

 

Day

33 °C

 

Night

24 °C

 

Sea

30 °C

 

Precipitation

139 mm

in month

 

Rainy days

19 days

in month

 

Daylight

12 hours

average

 

Sunshine

6 hours

average

 

Humidity

79 %

 

Day

33 °C

 

Night

24 °C

 

Sea

30 °C

 

Precipitation

139 mm

in month

 

Rainy days

19 days

in month

 

Daylight

12 hours

average

 

Sunshine

6 hours

average

 

Humidity

79 %

Overview: Southeast Thailand

Southeast Thailand is a popular destination for tourists, known for its beautiful beaches, stunning temples, and vibrant markets. Explore the island of Koh Samui, which offers a range of activities, including swimming, snorkeling, and scuba diving. Koh Phangan, located nearby, famous for its full moon parties, beautiful beaches, and lush jungles. Don't forget to taste local spicy curries, noodle dishes, and fresh seafood.

Weather charts for Southeast Thailand

Weather overview
Weather overview
Weather overview
Show more charts

Destinations nearby and activities

Destinations nearby

Activities in Southeast Thailand

🏖️🌊
Sand beaches
in 3 places
🏖️🏝️
Tropical beaches
in 3 places
🏖️🌅
Picturesque beaches
in 3 places
🤿🐠
Scuba diving
🥽🐟
Snorkelling
Show more
Ko Samui Island
Nice beach by the sea with turquise water in Koh Phangan in sunny weather with few clouds
Enjoyable beach with turquise water in Koh Tao on a sunny day with some clouds

Find more destinations like this

Travel essentials
Weather
Beach
Nature
City
Prices
Other

Where do you want to go?

When do you want to go?

Your ideal holidays are?

Who are you travelling with?

Day temperature

I don't care

Wet days

I don't care

Overall prices

Where do you want to go?

Your ideal holidays are?

When do you want to go?

Day temperature

I don't care

Destinations in Southeast Thailand

Destinations with similar weather to Southeast Thailand


Weather overview and FAQs

Weather overview

In Southeast Thailand in May, the average air temperature ranges from 33 °C (92 °F) during the day to 24 °C (75 °F) at night. There are 19 days of rain on average, where the rainfall is 139 mm (5.48 in).

Is May a good month to visit Southeast Thailand?

There are good conditions for visiting in Southeast Thailand in May. The temperature of the sea will be perfect at 30 °C (86 °F). At night, temperatures hover around a pleasant 24 °C (75 °F). Some people will find 33 °C (92 °F) temperature high, while others will enjoy it.

What is the temperature in Southeast Thailand during the day in May?

In Southeast Thailand in May, the average daily temperatures will be 33 °C (92 °F). The great temperature for lying by the sea or pool and sunbathing, everywhere else you will probably be a bit hot. Don't forget to drink during the day, in these temperatures you should hydrate yourself a lot.

What is the sea temperature in Southeast Thailand in May?

In May in Southeast Thailand expect the sea to be warm at 30 °C (86 °F). Really warm sea, you can spend hours in it. For people seeking refreshment, this sea temperature is too high.

How many rainy days can I expect in May in Southeast Thailand?

In Southeast Thailand in May, we can expect 19 days to be rainy, that is, days when precipitation exceeds 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 4.5 days of the week, or in general - 64 % days.

What is the rainfall intensity in Southeast Thailand in May?

In May in Southeast Thailand, there is 139 mm (5.48 in) rainfall, which means on average 5 mm (0.18 in) rainfall per day.

What is the night temperature in Southeast Thailand in May?

The average night temperature in Southeast Thailand in May is 24 °C (75 °F). A very pleasant temperature for long evening walks, fun over a drink outside, or doing sports in the morning. If possible, look for a hotel with air conditioning.

How many sunny hours can I expect in May in Southeast Thailand?

In May in Southeast Thailand, you can expect around 6 hours of sunshine.

Is May part of the wet season in Southeast Thailand?

No, there is no wet season in May in Southeast Thailand - you can expect 19 days of rain during the month.

Is the temperature rising or falling in the course of time in Southeast Thailand in May?

During May in Southeast Thailand, the day temperatures are decreasing - from 34 °C (93 °F) at the beginning of the month to 33 °C (91 °F) at the end of the month.

Is it hot in May in Southeast Thailand?

Yes, it is hot in Southeast Thailand in May, although the perception of heat can be subjective. Daytime temperatures rise to 33 °C (92 °F).

Is the weather in Southeast Thailand warmer in May than in April?

No, in Southeast Thailand in May the temperature is not higher than in April.

How long is the day (from dawn till dusk) in Southeast Thailand in May?

The length of daylight in Southeast Thailand in May is 12 hours.

What level of humidity is to expect in May in Southeast Thailand?

Humidity in Southeast Thailand in May is 79 %. This humidity is rather above average, but except for sensitive individuals, it should not be a problem.

Is Southeast Thailand rainier in May than in April?

Yes, Southeast Thailand is a rainier May than in April.

Appeared in TOP lists

Top 7 Places for Swimming in Turquoise Waters This Spring in Asia
Top 5 Fishing Destinations in Abundant Asian Waters

Useful links

5 destinations in Asia to warm up in March and experience lots of adventure

Our latest blog posts

Where to go
Top destinations
Text Search