Ko Samui weather

The forecast for Ko Samui (Thailand) for the next 10 days in local time: every 3 hours for the first 6 days, then every 6 hours. See when it will rain, how hard the wind will blow and how warm it will get.

Surat Thani, Thailand9.54°N, 99.94°EAsia/Bangkok (UTC+7)ECMWF: October 25 at 07:00 PM

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Next 48 hours (local time)

10-day forecast

  1. TodayOctober 26Rain
    13 mm · gusts 44 km/h    28°C 25°C
  2. TomorrowOctober 27Rain
    23 mm · gusts 42 km/h    29°C 24°C
  3. WednesdayOctober 28Heavy rain
    46 mm · gusts 41 km/h    26°C 25°C
  4. ThursdayOctober 29Rain
    30 mm · gusts 44 km/h    27°C 26°C
  5. FridayOctober 30Rain
    13 mm · gusts 19 km/h    28°C 26°C
  6. SaturdayOctober 31Light rain
    10 mm · gusts 16 km/h    29°C 25°C
  7. SundayNovember 1Light rain
    3 mm · gusts 26 km/h    28°C 27°C
  8. MondayNovember 2Heavy rain
    15 mm · gusts 31 km/h    28°C 25°C
  9. TuesdayNovember 3Rain
    8 mm · gusts 31 km/h    27°C 25°C
  10. WednesdayNovember 4Rain
    18 mm · gusts 35 km/h    28°C 25°C

Over the next 10 days in Ko Samui, temperatures will range from 24°C to 29°C, with 180 mm of rain or snow in total. Days with at least 1 mm of precipitation: 10. ECMWF model run from October 25 at 07:00 PM.

Ko Samui wind forecast for 10 days

Windiest: today - average 13 km/h, gusts up to 44 km/h. Calmest: Sunday, November 1 - average 6 km/h. The wind blows most often from the east.

DayWindGustsDirection
Today13 km/h44 km/h southeast
Tomorrow17 km/h42 km/h east
Wed, 10/2817 km/h41 km/h southeast
Thu, 10/2918 km/h44 km/h southeast
Fri, 10/3016 km/h19 km/h southeast
Sat, 10/3113 km/h16 km/h east
Sun, 11/16 km/h26 km/h east
Mon, 11/210 km/h31 km/h northeast
Tue, 11/311 km/h31 km/h east
Wed, 11/413 km/h35 km/h east

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Climate through the year

In October, daytime temperatures here average 28°C and nights 27°C, with about 248 mm of rain over the month. The sea is around 28°C at that time. The warmest month is May (an average of 30°C by day), the coolest is January (27°C by day, 26°C at night). The wettest month is November (about 374 mm) and the driest is February (38 mm). The sea temperature ranges from about 27°C in January to 29°C in May.

MonthDayNightRainSea
January27°C26°C134 mm27°C
February28°C26°C38 mm27°C
March29°C27°C115 mm28°C
April30°C28°C91 mm29°C
May30°C28°C170 mm29°C
June30°C28°C167 mm29°C
July29°C27°C166 mm28°C
August29°C27°C144 mm28°C
September29°C27°C181 mm28°C
October28°C27°C248 mm28°C
November28°C27°C374 mm28°C
December28°C27°C261 mm27°C

Long-term averages from NASA POWER data (MERRA-2, 2001-2020 reanalysis, CC BY 4.0). Sea temperature is the average water surface temperature at the nearest grid point over the sea. This is climate, not a forecast for a specific day. NASA POWER

The forecast for Ko Samui comes from the ECMWF model and is computed for the point 9.54°N, 99.94°E. Temperature is measured 2 m above the ground, wind at 10 m. Gusts are the strongest bursts of wind within each 3-hour period.

Source: ECMWF IFS model (CC BY 4.0), data modified. A forecast is a model result, not a measurement. ECMWF

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