Ko Samui climate

Ko Samui Weather in October

NASA POWER reanalysis for the half-degree grid cell around Ko Samui, 1991-2020; a grid cell is an area average and can differ from a thermometer in town by several degrees

Average highs run from 28°C on October 1 to 28°C on October 31, and lows from 27°C to 27°C. Normal precipitation for the month is 260 mm over about 28 wet days.

October day by day

The normal high and low for each date, in °C.

Normal daily high and low temperature at Ko Samui, in °C, with the record for each date.25262728293031151015202530
  • Normal low
  • Normal high
  • Reanalysis extreme high
  • Reanalysis extreme low

October at a glance

Average high
28°C
Average low
27°C
Precipitation
260 mm
Reanalysis high
30°COct 31, 2019
Reanalysis low
26°COct 11, 1996
Daylight
12 h 02 min to 11 h 48 min
Cloud cover
85%
Humidity
82%
Dew point
24°C
Wind
14.4 km/h

Every day of the month

A wet day has at least 1 mm of precipitation in the reanalysis.

DateNormal highNormal lowReanalysis highReanalysis lowChance wet
Oct 128°C27°C30°C 199126°C 199492%
Oct 228°C27°C30°C 199126°C 200493%
Oct 328°C27°C29°C 201326°C 200492%
Oct 428°C27°C29°C 201526°C 200093%
Oct 528°C27°C30°C 201526°C 200493%
Oct 628°C27°C29°C 200826°C 200493%
Oct 728°C27°C30°C 201526°C 201392%
Oct 828°C27°C30°C 201026°C 201392%
Oct 928°C27°C29°C 201026°C 201292%
Oct 1028°C27°C30°C 201426°C 199692%
Oct 1128°C27°C29°C 201626°C 199691%
Oct 1228°C27°C30°C 201026°C 199691%
Oct 1328°C27°C29°C 200526°C 200491%
Oct 1428°C27°C29°C 202026°C 200491%
Oct 1528°C27°C29°C 200826°C 199290%
Oct 1628°C27°C30°C 201726°C 199390%
Oct 1728°C27°C29°C 201726°C 199390%
Oct 1828°C27°C29°C 201526°C 199390%
Oct 1928°C27°C30°C 201726°C 199390%
Oct 2028°C27°C29°C 202026°C 199490%
Oct 2128°C27°C29°C 201726°C 199489%
Oct 2228°C27°C30°C 201526°C 201389%
Oct 2328°C27°C29°C 199226°C 200589%
Oct 2428°C27°C30°C 201926°C 199489%
Oct 2528°C27°C29°C 199726°C 199490%
Oct 2628°C27°C29°C 201526°C 199489%
Oct 2728°C27°C29°C 201926°C 199488%
Oct 2828°C27°C29°C 200426°C 199588%
Oct 2928°C27°C30°C 201426°C 199588%
Oct 3028°C27°C30°C 201826°C 199287%
Oct 3128°C27°C30°C 201926°C 199287%

Chance of rain

The chance of at least 1 mm of precipitation in the reanalysis on each date at Ko Samui, in percent.0204060801001102030
  • Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT+7).

October 1
sunrise 6:09 AM, sunset 6:11 PM
October 31
sunrise 6:10 AM, sunset 5:58 PM

Every day of October: sun and moon

Other months

Sources

Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.