ThailandThe weather in July in Ko Samui
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.
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.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in July for Ko Samui, Thailand. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
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.
Water temperature
The water temperature at Ko Samui is 28°C this month. Nice and warm for a swim.
Rainfall amount
In July, there is an average of 156 mm of precipitation, spread over 19 days. The wind speed is around 4 Bft, mostly coming from the West.
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.
July weather comparison
| Ko Samui | New York | |
|---|---|---|
| Average temperature | 33°C | 31°C |
| Max. temperature | 34°C | 33°C |
| Min. temperature | 27°C | -5°C |
| Total precipitation | 156 mm | 160 mm |
| Rainy days | 19 days | 18 days |
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.
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.
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.
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.
The typhoon season in Ko Samui runs from June to November.
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.
Temperature charts
These charts show the average temperatures in July in Ko Samui, Thailand. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in July in Ko Samui
Temperature in July in Ko Samui over the years
Precipitation charts
These charts show the average amount of precipitation in July in Ko Samui, Thailand. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in July in Ko Samui
Total precipitation in July in Ko Samui over the years
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.
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.