ThailandAverage weather for Koh Samui in July
It's hot in July in Koh 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 26°C and 27°C.
Start of July
The month of July starts in Koh Samui with hot temps, averaging around 34°C during the day and nights around 27°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. During this part of the month, you might see regular precipitation, but there will also be some sunny days. 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 Koh Samui is around 34°C, while nighttime temps are about 27°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.
In July, there is an average of 136 mm of precipitation, spread over 16 days. The wind speed is around 4 Bft, mostly coming from the West.
Koh 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 |
136 mm | 160 mm | |
| Rainy days |
16 days | 18 days | |
June
UV index
The UV index is a maximum of 9 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 Koh Samui?
Looking for sun? July isn’t a good month to be in Koh Samui. The temperature is nice, but there’s too much chance of rain.
The typhoon season in Koh Samui runs from June to November.
Temperature records
With 36°C in 2019, Koh 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 Koh Samui for all months and discover the best travel time
Daily Temperature in July in Koh Samui
This chart shows the average daily high and low temperatures in July for Koh 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 Koh Samui
The chart below shows the average daily precipitation in July for Koh 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 16 days of precipitation in Koh Samui.
Daily UV index in July in Koh Samui
This chart shows the average daily UV index in July in Koh 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 Koh Samui over the years
This chart shows the average temperature in July in Koh Samui, measured in degrees Celsius, over the past few years.
Total precipitation in July in Koh Samui over the years
This chart shows the average precipitation in July in Koh 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 Koh Samui
Click on any day in July to get detailed info about the usual weather on that day in Koh Samui. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in July in Koh Samui
Have you been to Koh Samui in July?
Share your weather experience in July in Koh Samui.
Average weather in Koh Samui by month
Click on a month below to see detailed weather info for Koh Samui. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Koh Samui for all months at once
