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Ko Samui Surf Forecast / Gulf of Thailand / Thailand

12 Day Weather and Surf, issued 12 am Saturday 17 Apr 2021 ICT
Forecast update in  hr  min  s Update imminent
Ko Samui surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Ko Samui sea temperature is 30.2 °C (Statistics for 17 Apr 1981-2005 - mean: 30.0 max: 30.7 min: 29.2 °C)
Icon breakBreak
Icon legend buoysLive Wave Height (m)
Icon legend windLive Wind Speed (km/h)
Ko Samui surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Ko Samui sea temperature is 30.2 °C (Statistics for 17 Apr 1981-2005 - mean: 30.0 max: 30.7 min: 29.2 °C)

Eyeball surf reportRecent Eyeball Surf Reports for Gulf of Thailand

  1. weather stationWind Update Continuing clean conditions at Ko Samui (calm at Ko Samui Island 6 km from Ko Samui).

    Ko Samui
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2 h 5 min ago

Calm
0 km/h
N
Clean
Please reload the page to see if there are any updates.


Best Forecast Surf Conditions for Ko Samui this week:

The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Monday (Apr 19) at 7PM.

Updates in  hr  min  s Update imminent
Rating
(10 max)
Swell
Height Map
Wave Height (m) & direction (?)
Period(s) (?)
Wave
Graph
(?)Metric surfscale
Energy (?)
Wind
(km/h)
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
High Tide
/ height (m)
Low Tide
/ height (m)
Summary
Rain (mm)
High °C
Low °C
Chill °C (?)
Sunrise
Sunset
Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Saturday
24
Sunday
25
Monday
26
Tuesday
27
Wed
28
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
000000000000000000000000000000000000
T thailand.htsgw.metric.18.cc23
T thailand.htsgw.metric.42.cc23
T thailand.htsgw.metric.66.cc23
T thailand.htsgw.metric.90.cc23
T thailand.htsgw.metric.114.cc23
T thailand.htsgw.metric.138.cc23
T thailand.htsgw.metric.162.cc23
T thailand.htsgw.metric.186.cc23
T thailand.htsgw.metric.210.cc23
T thailand.htsgw.metric.234.cc23
T thailand.htsgw.metric.258.cc23
T thailand.htsgw.metric.282.cc23
0.1
S
0.1
S
-
-
0.1
NW
0.1
S
-
0.1
S
0.1
SE
0.4
WNW
0.4
NW
0.1
S
0.3
W
0.1
NW
0.1
W
0.4
WNW
0.2
W
0.2
WNW
0.4
WNW
0.3
NNW
0.2
NNW
0.4
WSW
0.3
NW
0.2
NNW
0.4
WSW
0.1
NW
0.3
NW
0.3
W
0.1
NW
0.1
N
0.3
WSW
0.2
W
0.1
N
0.1
E
0.1
SE
0.1
SE
22--32-13342242322355345354245225555
000000000000000000000000000000000011
15
W
15
WSW
5
NE
5
N
10
SSW
5
NE
10
WSW
15
WSW
45
WSW
25
WSW
20
WSW
10
WNW
20
W
20
W
5
NW
30
W
20
W
15
WNW
30
W
25
W
35
W
30
W
30
W
20
WSW
30
WSW
25
W
15
WNW
25
W
25
W
10
WNW
30
W
25
W
15
WNW
25
W
20
W
0
SW
cross-
off
cross-
off
glassglasscrossglasscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
cross-
off
cross-
off
offoffoffcross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
cross-
off
offcross-
off
offoffoffoffglass
1:46AM
1.20
2:22AM
1.23
3:01AM
1.23
3:43AM
1.23
4:29AM
1.22
5:18AM
1.19
6:13AM
1.13
7:15AM
1.03
8:29AM
0.90
12:06AM
0.72
10:00AM
0.74
11:32PM
0.86
11:55AM
0.57
11:37PM
1.05
11:08AM
0.23
12:09PM
0.21
1:15PM
0.20
2:20PM
0.18
3:16PM
0.16
4:00PM
0.17
4:32PM
0.20
4:51PM
0.28
4:53PM
0.38
4:49AM
0.63
4:33PM
0.48
6:55AM
0.47
3:42PM
0.52
8:20AM
0.30

Note: the tide data above is for Chaweng Malibu which is 2 km away. Surf properties and timing are calculated for Ko Samui.New forecast is published every 6 hours at www.surf-forecast.com. See detailed tide info and graph
Offshore winds at Ko Samui blow from the WNW

Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Saturday
24
Sunday
25
Monday
26
Tuesday
27
Wed
28
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
thunderstorm
clear
clear
thunderstorm
clear
rain showers
thunderstorm
thunderstorm
thunderstorm
partially cloudy
partially cloudy
thunderstorm
partially cloudy
partially cloudy
thunderstorm
partially cloudy
clear
rain showers
clear
partially cloudy
thunderstorm
partially cloudy
partially cloudy
partially cloudy
thunderstorm
partially cloudy
partially cloudy
thunderstorm
clear
rain showers
thunderstorm
partially cloudy
partially cloudy
thunderstorm
thunderstorm
rain showers
risk thund- derclearclearrisk thund- derclearrain shwrsrisk thund- derrisk thund- derrisk thund- dersome cloudssome cloudsrisk thund- dersome cloudssome cloudsrisk thund- dersome cloudsclearrain shwrsclearsome cloudsrisk thund- dersome cloudssome cloudssome cloudsrisk thund- dersome cloudssome cloudsrisk thund- derclearrain shwrsrisk thund- dersome cloudssome cloudsrisk thund- derrisk thund- derrain shwrs
6--2-1925--1--1--1--1---1--1-12--1011
292829292929292928282829292830302930292930283031292931302931292931302931
282829292929282826272729282830282830282829282831282931282831282931282930
292829292929292928282829292830302930292930283031292931302931292931302931
-6:09--6:07--6:07--6:07--6:07--6:05--6:05--6:05--6:05--6:05--6:03--6:03-
--6:29--6:29--6:29--6:30--6:30--6:30--6:30--6:30--6:30--6:30--6:30--6:30

Short Range Forecast: Heavy rain (total 25mm), heaviest during Fri night. Warm (max 29°C on Fri night, min 26°C on Mon afternoon). Winds increasing (calm on Sat night, strong winds from the WSW by Mon afternoon).

Days 3-6 Weather Summary Light rain (total 3mm), mostly falling on Tue afternoon. Warm (max 30°C on Wed afternoon, min 27°C on Mon night). Winds increasing (light winds from the NW on Wed afternoon, fresh winds from the WNW by Thu afternoon).

Days 6-9 Weather Summary Light rain (total 2mm), mostly falling on Fri afternoon. Warm (max 31°C on Sat afternoon, min 28°C on Thu night). Winds decreasing (fresh winds from the W on Thu night, light winds from the WNW by Sun afternoon).

Long Range Forecast: Moderate rain (total 17mm), heaviest on Tue night. Warm (max 31°C on Mon afternoon, min 28°C on Sun night). Winds decreasing (fresh winds from the W on Mon night, calm by Wed afternoon).

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Ko Samui surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


Information about the Ko Samui Surf forecast

The above surf forecast table for Ko Samui provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Ko Samui can be found by selecting the local surf guide option on the grey menu. Our Ko Samui surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Ko Samui) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Ko Samui may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Ko Samui is 14 km (9 miles) from the city of Ko Samui. If you plan a holiday in Gulf of Thailand, look for hotels and other accommodation in Ko Samui. Ko Samui has rooms for a wide range of budgets as well as car hire and transport links.