World Resorts Thailand Koh Chang Weather

Koh Chang weather in May

Weather in Koh Chang: May

Average day temperature: 88.9°F
Average night temperature: 83.8°F
Sea water temperature: 87.7°F
Number of sunny days: 10 days
Day length: 12.5 - 12.8 hours
Number of rainy days: 14 days
Precipitation totals: 10.4 in.

Air temperature in May, °F

Show year:
2025
2024
2023

The highest day temperature during May of 2025 was 87°F. At the same time the lowest night temperature was 79°F. Daily and nightly averages during May were 85.0°F and 83.1°F.

Sea water temperature in Koh Chang in May, °F

Show year:
2025
2024
2023

The average sea water temperature in May of 2025 was 87.7°F. The highest and lowest sea temperatures during the month were 89.2°F and 86.5°F.

Sunny, partly cloudy and cloudy days

Mostly all days in May are cloudy but sunny and partly cloudy days are also possible.

Precipitation total in May, in.

Precipitation total value in Koh Chang in May is 12.9 in.

Wind speed in May, mph

The average wind speed value in May is 8.1 mph

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in May is: 5.4.

Best time for vacation in Koh Chang

Sunniest months:
January 22 days
December 21 days
February 17 days
Warmest months:
May 88.9 °F
April 88.3 °F
June 87.1 °F
Warmest sea temp:
May 87.7 °F
April 87.1 °F
June 85.8 °F
Coldest months:
January 84.7 °F
September 85.1 °F
December 85.3 °F
Rainiest months:
July 22 days
August 21 days
June 20 days
Windiest months:
July 11.1 mph
August 10.3 mph
June 9.9 mph

Koh Chang on a weather map

Koh Chang
+81°F
SW 6 mph
Feels like: +86°F
Precip.: 0%
Places in Thailand:
Name
°F
+79°F
+81°F
+84°F
+84°F
+81°F
+81°F
+81°F
+82°F
+84°F
+84°F
+81°F
+84°F
+81°F
+81°F
24 Hours Forecast
Koh Chang
Local time: 10:54
December 05, friday
1200
81°F
SW
6 mph
1500
82°F
NE
8 mph
1800
81°F
E
6 mph
2100
81°F
W
1 mph
December 06, saturday
0000
81°F
SW
4 mph
0300
79°F
SW
5 mph
0600
79°F
SW
7 mph
0900
79°F
SW
7 mph
Units of measurement: °C / °F