ThailandAverage weather for Ko Samui in July
It's hot in July in Ko Samui with an average temperature of 33°C. Temperatures this month range from a low of 32°C to a high of 34°C. At night, you can expect temperatures between 27°C and 28°C.
Start of July
The month of July starts in Ko Samui with hot temps, averaging around 34°C during the day and nights around 28°C. You can expect regular precipitation, but there will also be some sunny days in the early part of the month. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
Mid July
By mid-July, daytime temps drop to around 33°C, with nights around 27°C. There’s a high chance of precipitation during this time. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
End of July
By the end of July, the average daytime temperature in Ko Samui is around 34°C, while nighttime temps are about 28°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
Water temperature
The water temperature at Ko Samui is 28°C this month. Nice and warm for a swim.
In July, there is an average of 156 mm of precipitation, spread over 20 days. The wind speed is around 4 Bft, mostly coming from the West.
Ko Samui in July |
New York | ||
|---|---|---|---|
 Average temperature |
33°C | 31°C | |
 Max. temperature |
34°C | 33°C | |
| Min. temperature |
32°C | -5°C | |
 Total precipitation |
156 mm | 160 mm | |
| Rainy days |
20 days | 18 days | |
June
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is July a good time to visit Ko Samui?
Looking for sun? July isn’t a good month to be in Ko Samui. The temperature is nice, but there’s too much chance of rain.
The typhoon season in Ko Samui runs from June to November.
Temperature records
With 35°C in 2014, Ko Samui reached the highest temperature in July over the past 10 years. The lowest daytime temperature in this month was 28°C in 2018. The extreme nighttime temperatures ranged from a lowest recorded value of 24°C to a highest value of 29°C.
Check out the climate of Ko Samui for all months and discover the best travel time
Curious about the weather in other parts of Thailand? Check out the climate and weather for spots like Bangkok, Chiang Mai, Phuket, or explore other destinations in Thailand.
Daily Temperature in July in Ko Samui
This chart shows the average daily high and low temperatures in July for Ko Samui, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in July in Ko Samui
The chart below shows the average daily precipitation in July for Ko Samui, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for July, you can expect about 20 days of precipitation in Ko Samui.
Daily UV index in July in Ko Samui
This chart shows the average daily UV index in July in Ko Samui, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in July in Ko Samui over the years
This chart shows the average temperature in July in Ko Samui, measured in degrees Celsius, over the past few years.
Total precipitation in July in Ko Samui over the years
This chart shows the average precipitation in July in Ko Samui, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in July for Ko Samui
Click on any day in July to get detailed info about the usual weather on that day in Ko Samui. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in July in Ko Samui
Have you been to Ko Samui in July?
Share your weather experience in July in Ko Samui.
Average weather in Ko Samui by month
Click on a month below to see detailed weather info for Ko Samui. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
