Green island Surf Break

Lat Long: 22.03° N 121.53° E

Green island Surf Forecast and Surf Report

Issued: 7 am 23 Aug 2026 (local time)

Forecast update in  hr  min

Today's Green island sea temperature is
29.4°C
0.4° 

Green island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Green island surf forecast from 23 Aug 2026:

  • Best quality surf: Saturday 29 Aug, 11PM (local time) - 7ft (2.2m), 10s period, SSW swell with glassy winds.
  • Most powerful swell: Tuesday 25 Aug, 8PM (local time) - 10ft (3.0m), 17s period, ENE swell with 5,569 kJ wave energy.
  • Next surfable swell (1★+): Saturday 29 Aug, 11PM (local time) - 7ft (2.2m), 10s period with SSW swell.

Best Forecast Surf Conditions for Green island this week:

The surf forecast for Green island over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Aug 29) at 11PM. The primary swell is predicted to be 2.2m and 10s period with a secondary swell of 0.7m and 9s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Green island in the next 16 days are 3.0m 17s and forecast to arrive on Tuesday (Aug 25) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.5m 9s period and expected on Friday (Aug 28) at 5PM.

Wave TypeTime (CST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Sat 29th Aug)7ft (2.2m) 10s
Best Surf11PM (Sat 29th Aug)7ft (2.2m) 10s
Most Powerful 8PM (Tue 25th Aug)10ft (3.0m) 17s

Table - best surf conditions forecast for Green island over the next 16 days.


Short Range Forecast

Heavy rain (total 298mm), heaviest during Mon morning. Warm (max 28°C on Tue morning, min 26°C on Sun morning). Winds decreasing (strong winds from the SSW on Sun afternoon, light winds from the W by Tue night).

Days 4-6 Weather Summary

Light rain (total 4mm), mostly falling on Fri night. Warm (max 29°C on Wed afternoon, min 27°C on Fri afternoon). Winds increasing (moderate winds from the WSW on Wed morning, severe gales from the WSW by Fri morning).

Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
4
1
0
0
0
0
0
0
0
0
0
3
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3
SW
8
2.5
SW
8
2.4
SW
8
1.9
SW
8
2.1
SW
8
1.6
E
17
2.5
E
18
3
E
17
3
ENE
16
2.3
ENE
14
1.7
ENE
13
1.6
NE
13
0.4
ENE
14
0.3
ENE
13
0.3
ENE
13
0.3
E
13
0.2
ENE
16
4.5
SW
9
3
SW
9
2.4
SSW
10
2
SSW
10
Wave Graph
Metric surfscale
Energy kJ
1124
1034
805
505
569
1502
4585
5493
3882
2169
1018
827
63
35
34
29
25
2936
1236
1071
788
Wind (km/h)
45
SW
45
SW
45
SSW
50
SSW
45
SW
45
SW
40
SW
40
WSW
10
W
30
WSW
40
WSW
50
WSW
60
WSW
60
W
75
WSW
80
WSW
45
W
35
SW
25
SSW
10
S
5
NNE
Wind State
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross-on
cross-on
on
glassy
High Tide
4:34PM0.95m
3:05AM1.29m
5:00PM1.02m
3:57AM1.38m
5:24PM1.09m
4:39AM1.46m
5:47PM1.16m
5:16AM1.53m
6:11PM1.22m
5:52AM1.57m
6:35PM1.28m
6:26AM1.57m
6:59PM1.34m
Low Tide
9:44AM0.42m
8:41PM0.82m
10:27AM0.33m
9:43PM0.74m
11:01AM0.26m
10:27PM0.64m
11:31AM0.20m
11:03PM0.55m
11:59AM0.16m
11:38PM0.45m
12:26PM0.15m
00:13AM0.37m
12:53PM0.17m
00:49AM0.31m
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
cloud
thunderstorm
cloud
part cloud
part cloud
clear
part cloud
part cloud
cloud
cloud
thunderstorm
thunderstorm
clear
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:33
5:33
5:33
5:33
5:35
5:35
5:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:19
6:17
6:16
6:15
6:15
6:14
6:14
 mm
44
25
36
87
66
24
5
11
4
4
6
Temp °C
27
27
27
27
27
27
28
28
28
28
29
29
28
29
29
29
28
28
28
29
29
Feels °C
24
24
25
24
24
25
26
26
27
28
28
29
24
24
23
20
25
27
29
33
34
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
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Information about the Green island Surf forecast

The above surf forecast table for Green island provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Green island can be found by selecting the local surf guide option on the grey menu. Our Green island 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 (Green island) 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 Green island 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.

Green island is 72 km (45 miles) from Changlotsun. If you plan a holiday in South Taiwan, look for hotels and other accommodation in Changlotsun. Changlotsun has rooms for a wide range of budgets as well as car hire and transport links.

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