May weather forecast
Koh Chang, Thailand

May rings in the bells for the rainy season in Koh Chang. Compared to the preceding month, a drastic increase in rainfall takes center stage, indicating the wet season's full swing. With the heat persisting from April, May ensures a natural sauna effect, suitable for visitors who enjoy high humidity. The sea remains welcoming to swimmers throughout. Despite the regular themes of drier months, the notable feature of May is the amplified rainfall to a solid 351mm (13.82").

Temperature

May experiences an average high-temperature of a still hot 31°C (87.8°F), barely different from April's 32°C (89.6°F). May nights observe an average temperature dip to a warm 24°C (75.2°F).

Rainfall

In May, in Koh Chang, the rain falls for 20 days. Throughout May, 351mm (13.82") of precipitation is accumulated. Throughout the year, in Koh Chang, there are 170 rainfall days, and 3442mm (135.51") of precipitation is accumulated.

Sea temperature

With an average sea temperature of 30.3°C (86.5°F), May is the month with the warmest seawater in Koh Chang.
Note: Many feel that waters warmer than 30°C (86°F) fail to offer the same rejuvenating touch.

Daylight

In Koh Chang, the average length of the day in May is 12h and 41min.
On the first day of the month, sunrise is at 05:50 and sunset at 18:24. On the last day of May, in Koh Chang, sunrise is at 05:44 and sunset at 18:31 +07.

Sunshine

In May, the average sunshine in Koh Chang, Thailand, is 6h.

UV index

February through October, with an average maximum UV index of 12, are months with the highest UV index in Koh Chang, Thailand. A UV Index of 11, and more, symbolizes an extreme threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: An average UV index of 12 in May transforms into this advice:
Ensure every key safety measure. People with light skin might sustain burns in fewer than 5 minutes. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. A sunscreen with at least SPF 30 should be used liberally and reapplied frequently on cloudy days, especially after swimming or an outdoor workout. Attention! UV strength is notably upped by the reflection of sand and water.