Surf Forecasts:
Nanwan Beach (South Bay) surf forecast from 4 Oct 2026:
- Best quality surf: Monday 5 Oct, 2PM (local time) - 2.5ft (0.8m), 11s period, E swell with cross-offshore winds.
- Most powerful swell: Wednesday 7 Oct, 8AM (local time) - 5.5ft (1.7m), 15s period, E swell with 1,280 kJ wave energy.
- Next surfable swell (1★+): Monday 5 Oct, 2PM (local time) - 2.5ft (0.8m), 11s 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 Monday (Oct 05) at 2PM. The primary swell is predicted to be 0.8m and 11s period with a secondary swell of 0.1m and 9s. 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 1.7m 15s and forecast to arrive on Wednesday (Oct 07) 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 3.5m 9s period and expected on Tuesday (Oct 06) at 11AM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Mon 5th Oct) | 2.5ft (0.8m) 11s |
| Best Surf | 2PM (Mon 5th Oct) | 2.5ft (0.8m) 11s |
| Most Powerful | 8AM (Wed 7th Oct) | 5.5ft (1.7m) 15s |
Table - best surf conditions forecast for Nanwan Beach (South Bay) over the next 16 days.
Short Range ForecastLight rain (total 3mm), mostly falling on Mon afternoon. Warm (max 29°C on Mon morning, min 24°C on Tue night). Winds increasing (calm on Sun morning, strong winds from the NE by Tue night). | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Fri morning, min 24°C on Wed night). Winds decreasing (strong winds from the NE on Wed morning, light winds from the NNE by Fri night). | ||||||||||||||||||||
Sunday 4 | Monday 5 | Tuesday 6 | Wednesday 7 | Thursday 8 | Friday 9 | Saturday 10 | |||||||||||||||
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) | ESE 10 | ESE 10 | E 12 | E 12 | SE 9 | E 12 | SE 12 | SE 12 | ESE 10 | ESE 11 | ESE 11 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | SE 12 | SE 10 | ESE 11 | ESE 11 | ESE 11 | ESE 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 9 | 9 | 48 | 169 | 3 | 74 | 6 | 5 | 10 | 12 | 11 | 11 | 10 | 10 | 9 | 6 | 4 | 12 | 12 | 12 | 10 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 1:15AM1.06m | 2:47AM1.07m | 5:18PM0.61m | 3:58AM1.08m | 5:29PM0.69m | 4:54AM1.07m | 5:47PM0.78m | 5:41AM1.04m | 6:08PM0.88m | 6:24AM0.97m | 6:31PM0.97m | ||||||||||
Low Tide | 8:54AM0.18m | 10:03AM0.15m | 10:47AM0.13m | 9:09PM0.50m | 11:20AM0.15m | 10:23PM0.40m | 11:46AM0.18m | 11:19PM0.30m | 12:09PM0.22m | 00:07AM0.22m | 12:27PM0.27m | 00:52AM0.16m | |||||||||
 |  |  | |  | | | |  | | | | | | | | | | | | | |
 | 5:48 | — | — | 5:48 | — | — | 5:48 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — |
 | — | 5:42 | — | — | 5:40 | — | — | 5:39 | — | — | 5:38 | — | — | 5:37 | — | — | 5:37 | — | — | 5:36 | — |
mm | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — |
Temp °C | 28 | 28 | 28 | 29 | 29 | 27 | 26 | 27 | 24 | 26 | 26 | 24 | 26 | 26 | 26 | 27 | 27 | 27 | 28 | 28 | 27 |
Feels °C | 33 | 32 | 33 | 30 | 31 | 26 | 22 | 23 | 18 | 20 | 21 | 18 | 20 | 20 | 22 | 24 | 24 | 26 | 27 | 27 | 26 |
Swell 1 Height (m) Direction Period (s) | ENE 9 | NE 7 | E 9 | E 12 | SE 9 | E 12 | NW 7 | NW 6 | ESE 10 | ENE 15 | SE 11 | ESE 10 | ENE 14 | ESE 10 | ESE 10 | ENE 13 | ENE 13 | ENE 18 | ENE 17 | E 16 | ENE 16 |
| kJ | 26 | 11 | 38 | 169 | 3 | 74 | 14 | 6 | 10 | 1328 | 5 | 10 | 911 | 10 | 9 | 192 | 142 | 31 | 92 | 134 | 196 |
Swell 2 Height (m) Direction Period (s) | NE 7 | ENE 9 | E 12 | ESE 9 | SE 9 | NW 8 | SE 12 | N 10 | NNW 8 | ESE 11 | ESE 11 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | SE 10 | NW 5 | ESE 11 | ESE 11 | ESE 11 | ESE 10 |
| kJ | 7 | 25 | 48 | 8 | 3 | 16 | 6 | 2 | 35 | 12 | 11 | 11 | 10 | 9 | 9 | 4 | 1 | 12 | 12 | 11 | 10 |
Swell 3 Height (m) Direction Period (s) | ESE 10 | ESE 10 | ESE 9 | E 18 | — | E 16 | — | SE 12 | — | — | — | — | — | E 13 | — | SE 12 | SE 10 | — | NW 5 | ESE 11 | NNW 6 |
| kJ | 9 | 9 | 8 | 6 | — | 21 | — | 5 | — | — | — | — | — | 4 | — | 6 | 4 | — | 1 | 12 | 3 |
Wind waves Height (m) Direction Period (s) | NE 4 | NE 7 | NE 7 | NE 5 | ENE 6 | NE 8 | NE 9 | NE 8 | NE 8 | ENE 15 | ENE 16 | ENE 16 | ENE 14 | NE 7 | NE 7 | NE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 6 |
| kJ | 10 | 29 | 23 | 98 | 309 | 1205 | 1696 | 1313 | 1388 | 4097 | 4552 | 4108 | 2989 | 595 | 524 | 303 | 362 | 620 | 476 | 323 | 190 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 2 | 2 | 694 | 676 | 535 | 535 | 442 | 348 | 694 | 449 | 329 | 476 | 476 | 449 | 410 | 676 | 410 | 410 | 845 | 335 |
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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