Warm
Average highs sit around 32°C, giving warm days by monthly-average standards.
April verdict
Koh Samui, Thailand in April
Weather score72Very good
Very good for holiday weather
Average highs sit around 32°C, giving warm days by monthly-average standards. Sunshine averages 7.8h per day, enough for a balanced month. Rainfall averages 85mm, so some wet days are possible.
April weather
Monthly averages
Temp
32°C
Rain
85mm
Sun
7.8h
Sea
30°C
Weather score
72
Very good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 85mm, so some wet days are possible.
Some sun
Sunshine averages 7.8h per day, enough for a balanced month.
Warm sea
Sea temperatures average 30°C, so swimming is usually comfortable by monthly-average standards.
Map
Weather map
Compare Koh Samui, Thailand with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
April32°C average high
April is one of Koh Samui's warmest months, with daytime heat above the yearly average.
Warmest monthsApril to September
This stretch sets the upper range for average daytime heat.
Rain
April85mm average rain
April sits on the drier side of Koh Samui's year, which helps with sightseeing and transfers.
Driest monthsJanuary to September
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
April7.8 hours average sun
April is brighter than Koh Samui's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsFebruary to April
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
April30°C average sea
April sits in the warmer sea-temperature season, usually making swimming easier to enjoy.
Warmest seaApril to September
Sea temperatures are usually near 30°C in this stretch, so swimming comfort is at its strongest.
Weather score
April72 weather score
April sits close to Koh Samui's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsFebruary to March
These months have the strongest weather score in the monthly averages.
