Surf Forecasts:
Nanwan Beach (South Bay) surf forecast from 7 Jun 2026:
- Best quality surf: Saturday 13 Jun, 8PM (local time) - 11ft (3.5m), 8s period, WSW swell with cross-offshore winds.
- Most powerful swell: Saturday 13 Jun, 8PM (local time) - 11ft (3.5m), 8s period, WSW swell with 1,380 kJ wave energy.
- Next surfable swell (1★+): Monday 8 Jun, 5PM (local time) - 6ft (1.8m), 8s period with SW swell.
Best Forecast Surf Conditions for Nanwan Beach (South Bay) this week:
The surf forecast for Nanwan Beach (South Bay) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Jun 08) at 5PM. The primary swell is predicted to be 1.8m and 8s period with a secondary swell of 0.4m and 6s. Another secondary swell of 0.3m and 10s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Nanwan Beach (South Bay) in the next 16 days are 3.5m 8s and forecast to arrive on Saturday (Jun 13) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 7s period and expected on Thursday (Jun 11) at 8AM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Mon 8th Jun) | 6ft (1.8m) 8s |
| Best Surf | 8PM (Sat 13th Jun) | 11ft (3.5m) 8s |
| Most Powerful | 8PM (Sat 13th Jun) | 11ft (3.5m) 8s |
Table - best surf conditions forecast for Nanwan Beach (South Bay) over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 97mm), heaviest during Tue night. Warm (max 28°C on Sun morning, min 26°C on Mon afternoon). Winds increasing (light winds from the WSW on Mon afternoon, strong winds from the SW by Tue night). | Days 4-6 Weather SummaryHeavy rain (total 60mm), heaviest during Fri night. Warm (max 28°C on Wed morning, min 24°C on Fri night). Winds decreasing (fresh winds from the SW on Wed morning, calm by Thu night). | ||||||||||||||||||||
Sunday 7 | Monday 8 | Tuesday 9 | Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||
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) | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 7 | SSW 7 | WSW 8 | WSW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 314 | 289 | 364 | 402 | 383 | 364 | 581 | 750 | 885 | 999 | 908 | 669 | 459 | 437 | 375 | 244 | 270 | 188 | 111 | 1276 | 578 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross-off | cross | cross | cross | cross | cross | cross-on | on | cross | cross-off | cross | cross | cross | cross | cross-on | cross | cross-on |
High Tide | 10:39AM0.99m | 1:19AM0.59m | 11:40AM0.91m | 2:01AM0.68m | 12:57PM0.83m | 2:37AM0.79m | 2:23PM0.75m | 3:14AM0.92m | 3:48PM0.70m | 3:54AM1.05m | 5:05PM0.66m | 4:35AM1.18m | 6:14PM0.62m | ||||||||
Low Tide | 6:36PM0.26m | 4:44AM0.54m | 7:16PM0.28m | 6:48AM0.53m | 7:55PM0.31m | 8:35AM0.45m | 8:32PM0.34m | 9:57AM0.32m | 9:09PM0.38m | 11:04AM0.18m | 9:45PM0.41m | 12:03PM0.05m | 10:22PM0.43m | ||||||||
 | |  |  | | | | | | | | | |  |  |  | |  | | | | |
 | 5:11 | — | — | 5:11 | — | — | 5:11 | — | — | 5:11 | — | — | 5:11 | — | — | 5:13 | — | — | 5:13 | — | — |
 | — | 6:37 | — | — | 6:38 | — | — | 6:38 | — | — | 6:38 | — | — | 6:39 | — | — | 6:39 | — | — | 6:39 | — |
mm | 4 | 4 | 16 | 7 | 6 | 10 | 6 | 15 | 29 | 9 | 7 | 15 | 5 | — | 7 | 1 | 1 | 15 | 25 | 10 | 33 |
Temp °C | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 27 | 26 | 26 | 25 | 25 | 26 | 27 | 27 |
Feels °C | 30 | 30 | 30 | 29 | 30 | 29 | 28 | 26 | 25 | 29 | 29 | 32 | 29 | 27 | 31 | 27 | 26 | 28 | 28 | 26 | 30 |
Swell 1 Height (m) Direction Period (s) | SW 8 | SE 6 | E 9 | E 10 | SE 6 | SE 6 | SE 7 | E 10 | SE 6 | NE 12 | NE 9 | SW 8 | SW 8 | SW 8 | NE 7 | SW 8 | NE 7 | SW 7 | SSW 7 | NE 8 | NE 8 |
| kJ | 314 | 6 | 16 | 16 | 11 | 10 | 23 | 7 | 14 | 22 | 3 | 555 | 459 | 349 | 23 | 179 | 19 | 188 | 111 | 28 | 14 |
Swell 2 Height (m) Direction Period (s) | E 9 | E 9 | SE 6 | ENE 13 | E 10 | E 9 | E 10 | ENE 12 | ENE 12 | E 9 | NE 12 | SE 7 | SE 7 | NE 7 | SE 7 | NE 8 | SSE 6 | NE 8 | NE 8 | — | E 13 |
| kJ | 15 | 15 | 6 | 16 | 17 | 16 | 8 | 14 | 14 | 6 | 5 | 15 | 17 | 34 | 16 | 14 | 4 | 82 | 61 | — | 4 |
Swell 3 Height (m) Direction Period (s) | SE 11 | SE 11 | NE 13 | SE 10 | ENE 12 | ENE 12 | ENE 12 | E 10 | E 10 | E 9 | E 9 | NE 8 | NE 11 | SE 7 | NW 8 | SE 6 | ESE 7 | ESE 7 | WSW 10 | — | SE 6 |
| kJ | 5 | 5 | 7 | 4 | 15 | 15 | 15 | 2 | 7 | 6 | 2 | 10 | 5 | 16 | 3 | 6 | 5 | 5 | 31 | — | 1 |
Wind waves Height (m) Direction Period (s) | — | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | NE 8 | SW 8 | SW 8 | SW 8 | SW 8 | — | — | WSW 8 | WSW 7 |
| kJ | — | 289 | 364 | 402 | 383 | 364 | 581 | 750 | 885 | 999 | 908 | 669 | 55 | 437 | 375 | 244 | 270 | — | — | 1276 | 578 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 14 | 14 | 348 | 348 | 0 | 348 | 148 | 316 | 316 | 535 | 42 | 14 | 535 | 2 | 79 | 329 | 79 | 79 | 845 | 1631 | 14 |
Best forecast wave conditions in South Taiwan | |||||||||||||||||||||
Best forecast wave conditions in Taiwan | |||||||||||||||||||||
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Information about the Nanwan Beach (South Bay) Surf forecast
The above surf forecast table for Nanwan Beach (South Bay) provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Nanwan Beach (South Bay) can be found by selecting the local surf guide option on the grey menu. Our Nanwan Beach (South Bay) 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 (Nanwan Beach (South Bay)) 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 Nanwan Beach (South Bay) 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.
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