Hot
Average highs reach 34°C, so days can feel very hot.
May verdict
Surat Thani, Thailand in May
Weather score54Mixed
Mixed for holiday weather
Average highs reach 34°C, so days can feel very hot. Sunshine averages 6.4h per day, enough for a balanced month. Rainfall averages 212mm, so showers are a real planning factor.
May weather
Monthly averages
Temp
34°C
Rain
212mm
Sun
6.4h
Sea
31°C
Weather score
54
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 212mm, so showers are a real planning factor.
Some sun
Sunshine averages 6.4h per day, enough for a balanced month.
Warm sea
Sea temperatures average 31°C, so swimming is usually comfortable by monthly-average standards.
Map
Weather map
Compare Surat Thani, Thailand with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
May34°C average high
May sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsMarch to May
This stretch sets the upper range for average daytime heat.
Rain
May212mm average rain
May sits near Surat Thani's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to April
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
May6.4 hours average sun
May is below Surat Thani's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsFebruary to March
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
May31°C average sea
May is one of Surat Thani's warmest sea months, when swimming comfort is usually strongest.
Warmest seaMarch to July
Sea temperatures are usually near 29°C in this stretch, so swimming comfort is at its strongest.
Weather score
May54 weather score
May is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsJanuary to March
These months have the strongest weather score in the monthly averages.
Hotels near Surat Thani, Thailand
Marriott
Renaissance Koh Samui Resort & SpaKoh Samui, Thailand
W Koh SamuiKoh Samui, Thailand
Sheraton Samui ResortKoh Samui, Thailand
Vana Belle, a Luxury Collection Resort, Koh SamuiKoh Samui, Thailand
The Ritz-Carlton, Koh SamuiKoh Samui, Thailand
Khao Lak Marriott Beach Resort & SpaTakua Pa District, Phang Nga, Thailand