Weather forecast for 10 days
Ko Samui, Thailand

Weather forecast for the weekend

Saturday, 14. Jun

Cloudy
05:58

18:41
+07
Cloudy
29°C / 25°C
  • Wind: 9km/h SSW
  • Humidity: 73%
  • Precip. probability: 19%
  • Precipitation: 0mm
  • UV index: 9
Today, in Ko Samui, the sky will remain cloudy throughout.
A modest fluctuation in temperature is anticipated, achieving a maximum of a warm 29°C and dipping to a minimum of a moderately hot 25°C.
The maximum heat index, which indicates how humid air affects the felt temperature, is appraised at a blazing 33°C. Note that heat index values are valued for light wind and location in the shade.
Today, the maximum temperature is forecasted to be a few degrees lower than June's climate norm of 32.2°C.
Sunrise will be at 05:58 and sunset at 18:41; the daylight will last for 12h and 43min.

Sunday, 15. Jun

Isolated Thunderstorms
05:59

18:41
+07
Isolated Thunderstorms
29°C / 24°C
  • Wind: 7km/h WSW
  • Humidity: 72%
  • Precip. probability: 33%
  • Precipitation: 1mm
  • UV index: 11
On Sunday, in Ko Samui, localized thunderstorms could bring gusty winds and rain.
Minimal precipitation is predicted for tomorrow. Slight changes in temperature are expected, reaching a high of a temperate 29°C and decreasing to a low of a moderately hot 24°C.
The maximum heat index, which integrates air moisture with ambient temperature, is appraised at a humid 33°C. Note that heat index values are valued for light wind and location in the shade.
Tomorrow's maximum temperature is expected to be a few degrees lower than the common June peak of 32.2°C.
Sunrise will be at 05:59 and sunset at 18:41; tomorrow's daylight will last for 12h and 43min.

Frequently asked questions

What is the weather forecast for Ko Samui for tomorrow?
Tomorrow, brief thunderstorms may bring short bursts of heavy rain.
Will it rain tomorrow?
Tomorrow, there is a low chance of minimal precipitation in Ko Samui.
What will be the maximum temperature tomorrow?
Tomorrow, the maximum temperature will be 29°C, while the minimum temperature will be 24°C. The maximum heat index, which factors the actual air temperature with the relative humidity, is calculated to be 33°C.
The highest temperature tomorrow will be relatively lower than the average maximum temperature in June. The lowest temperature tomorrow will be in line with the average low temperature.
When is the sunrise / sunset tomorrow in Ko Samui?
On Sunday, in Ko Samui, sunrise will be at 05:59 and sunset at 18:41 (+07).
How long will the day be tomorrow?
In Ko Samui, the length of the day tomorrow will be 12h and 43min.
What is the weather forecast for Ko Samui for the next ten days?
In Ko Samui, a combination of predominantly unstable and occasionally rain-filled and cloudy weather is predicted for the next ten days.
Will it rain in the next ten days?
Rainfall is expected nearly every day for the next ten days in Ko Samui. With light precipitation of 6mm, Friday will be the day with the most rainfall.
How hot will it be in the next ten days?
The maximum temperature will range between 27°C and 29°C, while the minimum temperature will be between 23°C and 25°C.
Including the humidity's impact, the maximum feel-like temperature will vary between 29°C and 33°C.
What will be the hottest and the coldest days?
The hottest days will be Saturday and Sunday, with a maximum of 29°C. With a maximum temperature of 27°C, Tuesday, Thursday through next Monday will be the coldest days.

Long-term weather forecast

Sat14.Jun
  • 29°C
  • 25°C
Cloudy
Cloudy
  • Wind: 9km/h SSW
  • Humidity: 73%
  • UV index: 9
  • Precip. probability: 19%
  • Precipitation: 0mm
  • 05:58 18:41 +07
Sun15.Jun
  • 29°C
  • 24°C
Isolated Thunderstorms
Isolated Thunderstorms
  • Wind: 7km/h WSW
  • Humidity: 72%
  • UV index: 11
  • Precip. probability: 33%
  • Precipitation: 1mm
  • 05:59 18:41 +07
Mon16.Jun
  • 28°C
  • 24°C
PM Thunderstorms
PM Thunderstorms
  • Wind: 12km/h WSW
  • Humidity: 74%
  • UV index: 8
  • Precip. probability: 62%
  • Precipitation: 3mm
  • 05:59 18:42 +07
Tue17.Jun
  • 27°C
  • 24°C
PM Thunderstorms
PM Thunderstorms
  • Wind: 16km/h W
  • Humidity: 77%
  • UV index: 8
  • Precip. probability: 40%
  • Precipitation: 3mm
  • 05:59 18:42 +07
Wed18.Jun
  • 28°C
  • 24°C
PM Showers
PM Showers
  • Wind: 17km/h W
  • Humidity: 77%
  • UV index: 8
  • Precip. probability: 35%
  • Precipitation: 2mm
  • 05:59 18:42 +07
Thu19.Jun
  • 27°C
  • 24°C
PM Thunderstorms
PM Thunderstorms
  • Wind: 17km/h W
  • Humidity: 77%
  • UV index: 8
  • Precip. probability: 48%
  • Precipitation: 3mm
  • 05:59 18:42 +07
Fri20.Jun
  • 27°C
  • 24°C
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 18km/h WSW
  • Humidity: 78%
  • UV index: 6
  • Precip. probability: 58%
  • Precipitation: 6mm
  • 06:00 18:43 +07
Sat21.Jun
  • 27°C
  • 23°C
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 17km/h WSW
  • Humidity: 77%
  • UV index: 6
  • Precip. probability: 52%
  • Precipitation: 5mm
  • 06:00 18:43 +07
Sun22.Jun
  • 27°C
  • 24°C
Showers
Showers
  • Wind: 17km/h WSW
  • Humidity: 79%
  • UV index: 6
  • Precip. probability: 54%
  • Precipitation: 4mm
  • 06:00 18:43 +07
Mon23.Jun
  • 27°C
  • 24°C
PM Thunderstorms
PM Thunderstorms
  • Wind: 15km/h WSW
  • Humidity: 77%
  • UV index: 8
  • Precip. probability: 60%
  • Precipitation: 3mm
  • 06:00 18:43 +07
Looking ahead, conditions suggest a period of primarily thunderstorm-prone and occasionally rain-soaked and cloudy weather is anticipated.
Rainfall is anticipated on Sunday through next Monday.
Highs will stay within a very narrow margin in the upcoming days. Maximum temperatures will fall between 27°C and 29°C, while changes in the overnight low will be also barely noticeable, as the minimum temperature will fluctuate between 23°C and 25°C.
Saturday and Sunday, with the highest temperature of 29°C, will be the hottest days; Tuesday, Thursday through next Monday, with the highest temperature of 27°C, will be the coldest days.
Combining with the humidity, the maximum feel-like temperature may increase and range between 29°C and a humid 33°C.
Updated: Jun 13, 2025 @ 22:07:22 UTC
Published by: Weather Atlas | About Us
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