Weather Ko Samui week

Weather forecast for Ko Samui for this and next week.

Wednesday, Jun 3

82 / 79°F

0.02 in

17 mph

81 °F	88 °F	1 am
81 °F	88 °F	7 am
82 °F	91 °F	1 pm
82 °F	91 °F	7 pm

sunrise 5:58 am
sunset 6:38 pm

HOURLY

Light rain in the morning, turning to rain by midday, then changing to heavy rain in the afternoon, in the evening initially heavy rain, later rain. High of 82 °F. Total rainfall 0.59 in. Light rain overnight with a low of 79 °F. Total rainfall 0.02 in.

Interactive map weather Thailand

GPS: 9.5357; 99.9357

altitude: 26 ft
local time:

PLACES IN THE AREA

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Weather forecast Ko Samui, Thailand extended forecast

Time			Precip.	Wind	Pressure	Humidity	Dew	total	Fog	Low	Middle	High
Wednesday 06/03/2026
1 AM 7 PM	light rain	81 °F 90 °F	0.02 in	23 fps 16 mph southwest	29.8 in	87 %	75 °F	100 %	0%	25%	99%	99%
7 AM 1 AM	rain	81 °F 90 °F	0.11 in	22 fps 15 mph southwest	29.7 in	89 %	75 °F	94 %	0%	7%	23%	91%
1 PM 7 AM	heavy rain	82 °F 91 °F	0.35 in	24 fps 17 mph west-southwest	29.7 in	85 %	77 °F	100 %	0%	2%	85%	100%
7 PM 1 PM	rain	82 °F 91 °F	0.11 in	23 fps 16 mph west-southwest	29.7 in	82 %	75 °F	99 %	0%	21%	62%	96%
Thursday 06/04/2026
1 AM 7 PM	light rain	81 °F 90 °F	0.02 in	24 fps 16 mph southwest	29.7 in	89 %	75 °F	100 %	0%	21%	58%	100%
7 AM 1 AM	overcast	79 °F 88 °F	0.02 in	22 fps 15 mph southwest	29.7 in	89 %	75 °F	99 %	0%	7%	20%	99%
1 PM 7 AM	rain	86 °F 95 °F	0.17 in	28 fps 19 mph west-southwest	29.7 in	76 %	75 °F	91 %	0%	21%	10%	88%
7 PM 1 PM	overcast	82 °F 91 °F	0.00 in	27 fps 18 mph west-southwest	29.7 in	85 %	75 °F	100 %	0%	9%	9%	100%

Ko Samui, Thailand - information

State: Thailand

GPS coordinates: 9.5357; 99.9357

Time zone: Asia / Bangkok time difference in hours with time in US is +5 hours

Population: 50 000
Altitude: 26 ft
The administrative part:

Changwat Surat Thani, Surat Thani

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Weather Ko Samui, Thailand. Weather forecast Ko Samui.

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Data source

Weather forecast for Ko Samui is supplied by MET Norway Norwegian Meteorological Institute and the NRK.

Feels like

To calculate the perceived temperature, we use the Australian Apparent Temperature (AAT) model, which is designed for year-round calculations and takes air humidity into account in addition to temperature and wind speed.

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Astronomical information Ko Samui

data are always in the local time

Sun and light

June 3, 2026

Sunrise:	Sunset:
5:58 am	6:38 pm
Noon:	Length of day:
12:18 pm	12:39
Start of civil twilight*:	End of civil twilight*:
5:35 am	7:01 pm
Start of nautical twilight*:	End of nautical twilight*:
5:09 am	7:27 pm
Start of astronomical twilight*:	End of astronomical twilight*:
4:42 am	7:54 pm
* What is Twilight?

Moon and moon phases

Moonrise:	Moonset:
06/02/2026 8:23 pm	06/03/2026 8:07 am
Next new moon:	Next full moon:
06/15/2026	06/30/2026