Surf Forecasts:
Nanwan Beach (South Bay) surf forecast from 23 Oct 2026:
- Best quality surf: Sunday 25 Oct, 5PM (local time) - 2.5ft (0.8m), 9s period, E swell with cross-offshore winds.
- Most powerful swell: Saturday 24 Oct, 11AM (local time) - 8ft (2.5m), 7s period, W swell with 587 kJ wave energy.
- Next surfable swell (1★+): Sunday 25 Oct, 5PM (local time) - 2.5ft (0.8m), 9s period with E 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 Sunday (Oct 25) at 5PM. The primary swell is predicted to be 0.8m and 9s period with a secondary swell of 0.3m and 7s. 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 2.5m 7s and forecast to arrive on Saturday (Oct 24) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 6.0m 11s period and expected on Friday (Oct 23) at 8PM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Sun 25th Oct) | 2.5ft (0.8m) 9s |
| Best Surf | 5PM (Sun 25th Oct) | 2.5ft (0.8m) 9s |
| Most Powerful | 11AM (Sat 24th Oct) | 8ft (2.5m) 7s |
Table - best surf conditions forecast for Nanwan Beach (South Bay) over the next 16 days.
Short Range ForecastLight rain (total 7mm), mostly falling on Sat morning. Warm (max 28°C on Fri afternoon, min 25°C on Sat night). Winds decreasing (stormy winds from the NW on Fri night, light winds from the N by Sun afternoon). | Days 4-6 Weather SummarySome drizzle, heaviest during Mon afternoon. Warm (max 28°C on Mon morning, min 23°C on Wed night). Winds increasing (light winds from the NNE on Mon afternoon, near gales from the NE by Tue night). | ||||||||||||||||||||
Friday 23 | Saturday 24 | Sunday 25 | Monday 26 | Tuesday 27 | Wednesday 28 | Thursday 29 | |||||||||||||||
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) | ENE 15 | NW 10 | E 12 | W 7 | E 10 | E 10 | E 9 | E 9 | E 9 | E 9 | E 9 | SE 6 | SE 6 | NE 8 | NE 9 | NE 9 | NE 9 | ENE 8 | ENE 8 | ENE 8 | E 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 0 | 247 | 587 | 108 | 96 | 106 | 103 | 127 | 130 | 137 | 6 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
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 | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 5:10PM0.82m | 5:12AM0.93m | 5:32PM0.93m | 5:59AM0.90m | 5:57PM1.05m | 6:45AM0.84m | 6:27PM1.15m | 7:33AM0.76m | 7:00PM1.24m | 8:23AM0.67m | 7:38PM1.28m | 9:18AM0.57m | 8:20PM1.29m | ||||||||
Low Tide | 11:02AM0.25m | 11:00PM0.32m | 11:24AM0.27m | 11:47PM0.20m | 11:46AM0.30m | 00:34AM0.10m | 12:08PM0.33m | 1:22AM0.03m | 12:30PM0.37m | 2:14AM0.00m | 12:51PM0.39m | 3:09AM0.01m | 1:11PM0.41m | 4:13AM0.05m | |||||||
 | |  |  |  |  |  | |  | |  | | | | | | | | | | | |
 | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — |
 | — | 5:25 | — | — | 5:24 | — | — | 5:23 | — | — | 5:23 | — | — | 5:22 | — | — | 5:22 | — | — | 5:22 | — |
mm | — | — | 1 | 5 | 1 | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 28 | 26 | 27 | 26 | 26 | 28 | 28 | 27 | 28 | 28 | 26 | 27 | 26 | 24 | 24 | 25 | 24 | 26 | 26 | 25 |
Feels °C | 29 | 24 | 13 | 22 | 22 | 26 | 28 | 29 | 30 | 30 | 31 | 27 | 23 | 21 | 15 | 16 | 17 | 17 | 24 | 25 | 23 |
Swell 1 Height (m) Direction Period (s) | ENE 15 | NE 14 | NE 12 | ESE 10 | E 10 | E 10 | E 9 | E 9 | E 9 | E 9 | E 9 | SSE 6 | SE 6 | — | NW 10 | — | NW 10 | NNW 7 | NW 6 | NW 5 | NW 5 |
| kJ | 10169 | 3492 | 555 | 67 | 108 | 96 | 106 | 103 | 127 | 130 | 137 | 4 | 1 | — | 24 | — | 4 | 5 | 1 | 1 | 1 |
Swell 2 Height (m) Direction Period (s) | WNW 12 | — | E 12 | E 12 | SW 7 | SE 8 | SE 8 | SE 7 | W 5 | SE 7 | SE 7 | SE 6 | — | — | — | — | — | — | — | — | E 11 |
| kJ | 111 | — | 247 | 66 | 33 | 34 | 20 | 9 | 4 | 14 | 13 | 6 | — | — | — | — | — | — | — | — | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | NE 10 | SE 9 | NNE 9 | NE 5 | S 4 | N 9 | WSW 4 | — | SE 6 | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 54 | 51 | 7 | 1 | 1 | 2 | 2 | — | 6 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 11 | NW 10 | WNW 10 | W 7 | W 6 | W 6 | W 5 | W 5 | NE 6 | NE 6 | NE 5 | ENE 10 | ENE 8 | NE 8 | NE 9 | NE 9 | NE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 804 | 6051 | 3782 | 587 | 205 | 74 | 32 | 11 | 25 | 11 | 6 | 598 | 832 | 1877 | 3058 | 2419 | 1699 | 680 | 457 | 367 | 322 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 442 | 148 | 148 | 148 | 14 | 14 | 0 | 0 | 0 | 79 | 693 | 1254 | 449 | 476 | 1254 | 1254 | 316 | 316 | 449 | 316 |
Best forecast wave conditions in South Taiwan | |||||||||||||||||||||
Best forecast wave conditions in Taiwan | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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 Nanwan Beach (South Bay) 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 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.
Nearest