Surf Forecasts:
Green island surf forecast from 15 Sep 2026:
- Best quality surf: Sunday 20 Sep, 11AM (local time) - 2.5ft (0.8m), 13s period, ENE swell with offshore winds.
- Most powerful swell: Tuesday 22 Sep, 8AM (local time) - 6ft (1.9m), 12s period, NE swell with 1,042 kJ wave energy.
- Next surfable swell (1★+): Sunday 20 Sep, 11AM (local time) - 2.5ft (0.8m), 13s period with ENE 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 Sunday (Sep 20) at 11AM. The primary swell is predicted to be 0.8m and 13s period with a secondary swell of 0.6m and 9s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Green island in the next 16 days are 1.9m 12s and forecast to arrive on Tuesday (Sep 22) at 8AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 7s period and expected on Wednesday (Sep 16) at 11PM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Sun 20th Sep) | 2.5ft (0.8m) 13s |
| Best Surf | 11AM (Sun 20th Sep) | 2.5ft (0.8m) 13s |
| Most Powerful | 8AM (Tue 22nd Sep) | 6ft (1.9m) 12s |
Table - best surf conditions forecast for Green island over the next 16 days.
Short Range ForecastLight rain (total 2mm), mostly falling on Wed night. Warm (max 28°C on Wed afternoon, min 27°C on Wed morning). Mainly strong winds. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Sun night. Warm (max 28°C on Sun afternoon, min 27°C on Sat morning). Mainly fresh winds. | ||||||||||||||||||||
Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | NE 7 | NE 7 | ENE 10 | ENE 10 | ENE 10 | ENE 14 | ENE 13 | ENE 13 | ENE 13 | E 10 | ENE 12 | ENE 12 | ENE 13 | ENE 12 | ENE 12 | ENE 13 | ENE 12 | ENE 12 | NE 12 | NE 11 | ENE 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 373 | 453 | 167 | 167 | 160 | 154 | 135 | 135 | 92 | 82 | 81 | 81 | 236 | 386 | 634 | 734 | 699 | 787 | 865 | 604 | 103 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 8:54AM1.12m | 8:38PM1.39m | 9:36AM0.99m | 9:11PM1.32m | 10:37AM0.88m | 9:55PM1.24m | 1:07PM0.82m | 11:12PM1.17m | 3:44PM0.89m | 1:13AM1.16m | 4:02PM0.97m | 2:38AM1.23m | 4:22PM1.05m | 3:33AM1.32m | |||||||
Low Tide | 2:19PM0.56m | 3:29AM0.38m | 2:39PM0.65m | 4:25AM0.47m | 2:59PM0.73m | 5:50AM0.54m | 3:16PM0.81m | 7:51AM0.53m | 5:58PM0.88m | 9:08AM0.46m | 8:26PM0.82m | 9:51AM0.38m | 9:26PM0.71m | ||||||||
 | |  | | |  |  |  | | | |  | | |  | | |  | | | | |
 | 5:39 | — | — | 5:41 | — | — | 5:41 | — | — | 5:41 | — | — | 5:41 | — | — | 5:41 | — | — | 5:41 | — | — |
 | — | 5:57 | — | — | 5:55 | — | — | 5:54 | — | — | 5:53 | — | — | 5:52 | — | — | 5:52 | — | — | 5:51 | — |
mm | — | — | 1 | — | — | — | 1 | — | — | — | — | — | — | — | 2 | 2 | — | — | — | — | — |
Temp °C | 27 | 28 | 27 | 27 | 27 | 28 | 27 | 28 | 28 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 |
Feels °C | 25 | 26 | 24 | 25 | 26 | 27 | 27 | 28 | 27 | 26 | 27 | 26 | 27 | 29 | 28 | 26 | 25 | 24 | 25 | 26 | 25 |
Swell 1 Height (m) Direction Period (s) | ENE 12 | ENE 15 | ENE 10 | ENE 10 | ENE 10 | E 9 | E 9 | E 9 | E 9 | E 10 | E 9 | E 9 | ENE 13 | ENE 12 | ENE 12 | ENE 13 | ENE 12 | ENE 12 | SE 10 | ESE 10 | ENE 11 |
| kJ | 111 | 44 | 167 | 167 | 160 | 113 | 110 | 87 | 63 | 67 | 61 | 64 | 236 | 386 | 634 | 734 | 699 | 787 | 4 | 9 | 103 |
Swell 2 Height (m) Direction Period (s) | ESE 9 | ESE 9 | ENE 15 | ENE 14 | ENE 14 | ENE 14 | ENE 13 | ENE 13 | ENE 13 | ENE 12 | ENE 12 | ENE 12 | E 9 | ENE 16 | SSE 7 | SE 7 | SE 7 | SW 7 | SW 7 | S 7 | ESE 9 |
| kJ | 9 | 8 | 89 | 110 | 160 | 154 | 135 | 135 | 92 | 82 | 81 | 81 | 59 | 147 | 5 | 2 | 2 | 2 | 2 | 1 | 9 |
Swell 3 Height (m) Direction Period (s) | SW 7 | SW 8 | ESE 9 | SSE 9 | SSE 9 | SSE 8 | SSE 9 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | NNE 8 | SE 8 | SSE 8 | E 11 | SW 8 | SW 7 | SE 10 | S 7 | SW 6 | S 6 |
| kJ | 2 | 3 | 8 | 9 | 8 | 7 | 8 | 7 | 7 | 7 | 6 | 23 | 11 | 6 | 2 | 2 | 2 | 4 | 1 | 2 | 1 |
Wind waves Height (m) Direction Period (s) | NE 7 | NE 7 | NNE 7 | NNE 6 | NE 6 | NNE 5 | NE 5 | NE 5 | NE 6 | NE 5 | NE 5 | NE 6 | NNE 6 | NNE 6 | NNE 7 | NNE 6 | NNE 6 | NNE 6 | NE 12 | NE 11 | NE 5 |
| kJ | 373 | 453 | 384 | 222 | 147 | 71 | 73 | 83 | 96 | 72 | 60 | 83 | 69 | 82 | 217 | 186 | 170 | 136 | 865 | 604 | 86 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 696 | 469 | 305 | 497 | 591 | 290 | 696 | 324 | 305 | 324 | 678 | 324 | 0 | 678 | 324 | 81 | 678 | 305 | 324 | 678 | 290 |
Best forecast wave conditions in South Taiwan | |||||||||||||||||||||
Best forecast wave conditions in Taiwan | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Green island 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 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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