Surf Forecasts:
Chialoshui surf forecast from 20 Aug 2026:
- Best quality surf: Friday 21 Aug, 2PM (local time) - 10ft (3.0m), 10s period, SW swell with offshore winds.
- Most powerful swell: Tuesday 25 Aug, 2PM (local time) - 7ft (2.1m), 17s period, E swell with 2,671 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 11PM (local time) - 8ft (2.4m), 9s period with SSW swell.
Best Forecast Surf Conditions for Chialoshui this week:
The surf forecast for Chialoshui over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 20) at 11PM. The primary swell is predicted to be 2.4m and 9s period with a secondary swell of 1.9m and 9s. Another secondary swell of 0.4m and 8s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Chialoshui in the next 16 days are 2.1m 17s and forecast to arrive on Tuesday (Aug 25) at 2PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Saturday (Aug 22) at 5AM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Thu 20th Aug) | 8ft (2.4m) 9s |
| Best Surf | 2PM (Fri 21st Aug) | 10ft (3.0m) 10s |
| Most Powerful | 2PM (Tue 25th Aug) | 7ft (2.1m) 17s |
Table - best surf conditions forecast for Chialoshui over the next 16 days.
Short Range ForecastHeavy rain (total 154mm), heaviest during Sun morning. Warm (max 28°C on Sat night, min 26°C on Thu afternoon). Winds decreasing (strong winds from the WSW on Thu night, light winds from the WNW by Sun morning). | Days 5-7 Weather SummaryHeavy rain (total 97mm), heaviest during Sun afternoon. Warm (max 29°C on Mon morning, min 25°C on Sun afternoon). Winds increasing (light winds from the W on Sun afternoon, fresh winds from the SW by Mon night). | |||||||||||||||||||
Thu 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | ||||||||||||||
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) | SSW 9 | SSW 9 | SW 9 | SSW 10 | SW 10 | SW 10 | SW 9 | SW 10 | SW 9 | SSW 9 | SSW 9 | ENE 12 | E 19 | E 18 | E 18 | E 16 | ENE 15 | ENE 14 | NE 9 | ENE 13 |
Wave Graph  | ||||||||||||||||||||
 kJ | 573 | 672 | 811 | 669 | 738 | 611 | 360 | 432 | 1150 | 440 | 362 | 939 | 580 | 1351 | 2538 | 2373 | 1418 | 1016 | 1019 | 476 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | cross-off | off | off | cross-off | off | off | off | off | off | cross-off | off | off | off | cross-off | cross-off |
High Tide | 11:06PM1.22m | 1:56PM0.78m | 00:21AM1.19m | 4:35PM0.84m | 1:55AM1.21m | 4:53PM0.90m | 3:08AM1.27m | 5:13PM0.97m | 4:01AM1.36m | 5:34PM1.03m | 4:44AM1.44m | 5:56PM1.09m | ||||||||
Low Tide | 3:54PM0.69m | 7:06AM0.53m | 4:12PM0.76m | 8:54AM0.49m | 6:07PM0.83m | 9:58AM0.41m | 8:34PM0.82m | 10:39AM0.32m | 9:42PM0.74m | 11:12AM0.25m | 10:28PM0.65m | 11:41AM0.19m | 11:06PM0.56m | |||||||
 |  | | | | | | | |  | |  | | | | | |  | | | |
 | — | — | 5:35 | — | — | 5:35 | — | — | 5:35 | — | — | 5:35 | — | — | 5:37 | — | — | 5:37 | — | — |
 | 6:23 | — | — | 6:22 | — | — | 6:22 | — | — | 6:21 | — | — | 6:21 | — | — | 6:20 | — | — | 6:19 | — |
mm | 3 | 25 | 32 | 28 | 11 | 4 | 2 | 13 | 36 | 55 | 3 | — | 6 | 19 | 6 | 5 | 3 | — | 1 | 2 |
Temp °C | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 27 | 26 | 28 | 29 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 28 |
Feels °C | 28 | 29 | 27 | 27 | 28 | 28 | 27 | 29 | 28 | 31 | 31 | 30 | 28 | 31 | 29 | 29 | 31 | 33 | 32 | 32 |
Swell 1 Height (m) Direction Period (s) | SSW 9 | ENE 8 | SE 8 | SSW 10 | ENE 8 | ENE 8 | SW 9 | ESE 10 | SW 9 | SSW 9 | SSW 9 | ENE 12 | NE 9 | NE 9 | E 18 | E 16 | ENE 15 | ENE 10 | ENE 14 | ENE 13 |
| kJ | 573 | 27 | 17 | 669 | 7 | 7 | 360 | 10 | 516 | 440 | 362 | 939 | 424 | 632 | 2538 | 2373 | 1418 | 726 | 693 | 476 |
Swell 2 Height (m) Direction Period (s) | ENE 8 | SSE 8 | NE 8 | SE 8 | SSE 8 | ESE 10 | ENE 8 | ENE 10 | ENE 8 | ENE 10 | ENE 10 | SSW 9 | SSW 10 | SSW 9 | NE 10 | SSW 9 | SSW 10 | ENE 14 | SSW 10 | SSW 10 |
| kJ | 38 | 26 | 17 | 15 | 6 | 10 | 7 | 9 | 6 | 32 | 107 | 276 | 349 | 490 | 804 | 299 | 502 | 1016 | 319 | 290 |
Swell 3 Height (m) Direction Period (s) | SSE 9 | E 15 | — | ENE 8 | ESE 10 | SSE 7 | ESE 10 | NE 8 | ESE 10 | NE 7 | ENE 13 | E 16 | E 19 | E 18 | SSW 9 | SW 9 | SSE 9 | SSW 10 | SE 9 | SE 9 |
| kJ | 30 | 4 | — | 7 | 10 | 5 | 11 | 3 | 10 | 7 | 64 | 174 | 580 | 1351 | 393 | 664 | 8 | 370 | 22 | 22 |
Wind waves Height (m) Direction Period (s) | — | SSW 9 | SW 9 | W 4 | SW 10 | SW 10 | W 4 | SW 10 | SW 9 | — | NE 5 | — | — | — | — | NE 10 | NE 10 | NE 9 | NE 9 | NE 8 |
| kJ | — | 672 | 811 | 10 | 738 | 611 | 22 | 432 | 1150 | — | 60 | — | — | — | — | 1406 | 1037 | 853 | 1019 | 371 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 318 | 33 | 338 | 338 | 16 | 305 | 305 | 0 | 0 | 0 | 682 | 33 | 137 | 397 | 33 | 0 | 0 | 0 | 0 |
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 Chialoshui 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 Chialoshui Surf forecast
The above surf forecast table for Chialoshui provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Chialoshui can be found by selecting the local surf guide option on the grey menu. Our Chialoshui 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 (Chialoshui) 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 Chialoshui 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.
Chialoshui is 8 km (5 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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