Temperature in Koh Samui in July

Daytime highs, nighttime lows and the warmest cities in Koh Samui, Thailand this July.

Koh Samui, Thailand, a region in Thailand, experiences very high average maximum daytime temperatures in July, ranging from 30°C (86°F) in Chaweng Beach to 33°C (91°F) in Suratthani. Nighttime temperatures generally drop to 25°C (77°F) in Suratthani and 27°C (81°F) in Chaweng Beach.

What is the temperature of the different cities in Koh Samui, Thailand in July?

Explore the map below to discover average July temperatures at the top destinations in Koh Samui. For a deeper dive, simply click on any destination dot.

Select a Month

Check the conditions for any month of the year.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

For a detailed overview over the year and the best time to visit Koh Samui, check out our Koh Samui's climate page.

See also: Koh Samui weather by month.

Best Places to Visit in Koh Samui in July

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

Conditions Temperatures Precipitation
Avg daytime high -5°C (23°F) cold → 32°C (90°F) hot

Marker color shows the average daytime high temperature in July: blue is cold, red is hot.

See all July weather averages, cities and regions in Koh Samui

Koh Samui temperatures in July: frequently asked questions

How hot does it get in Koh Samui, Thailand in July?

Average daytime highs in Koh Samui, Thailand during July reach about 30°C (86°F) in Chaweng Beach.

How cold does it get at night in Koh Samui, Thailand in July?

After dark, Chaweng Beach cools to about 27°C (81°F) on an average July night.

What is the warmest city in July in Koh Samui, Thailand?

Based on our systematic data collection, Suratthani has been identified as the city with the highest average temperatures. The daytime temperature usually hovers around 33°C (91°F), while at night it goes down to an approximate temperature of 25°C (77°F).

What is the coldest city in July in Koh Samui, Thailand?

Our database indicates that in July, Chaweng Beach is the city with the coolest temperatures in Koh Samui, Thailand. You can expect daytime highs of 30°C (86°F) and nighttime lows close to 27°C (81°F).

How much sun does Koh Samui, Thailand get in July?

Chaweng Beach usually sees around 156 hours of sunlight, indicating a moderately sunny period.

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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