Surf Forecasts:
Nanwan Beach (South Bay) surf forecast from 3 Jun 2026:
- Best quality surf: Friday 5 Jun, 2PM (local time) - 5.5ft (1.7m), 8s period, SSW swell with cross-offshore winds.
- Most powerful swell: Wednesday 10 Jun, 8AM (local time) - 15ft (4.5m), 11s period, SSW swell with 4,340 kJ wave energy.
- Next surfable swell (1★+): Friday 5 Jun, 2PM (local time) - 5.5ft (1.7m), 8s period with SSW 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 Friday (Jun 05) at 2PM. The primary swell is predicted to be 1.7m and 8s period with a secondary swell of 0.3m and 10s. 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 4.5m 11s and forecast to arrive on Wednesday (Jun 10) at 8AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 10s period and expected on Wednesday (Jun 03) at 2PM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Fri 5th Jun) | 5.5ft (1.7m) 8s |
| Best Surf | 2PM (Fri 5th Jun) | 5.5ft (1.7m) 8s |
| Most Powerful | 8AM (Wed 10th Jun) | 15ft (4.5m) 11s |
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 66mm), heaviest during Fri night. Warm (max 29°C on Wed morning, min 26°C on Thu night). Winds decreasing (fresh winds from the SSW on Thu morning, light winds from the SSE by Thu night). | Days 4-6 Weather SummaryHeavy rain (total 46mm), heaviest during Sun night. Warm (max 29°C on Sun morning, min 25°C on Mon night). Winds decreasing (fresh winds from the W on Sat afternoon, calm by Mon morning). | ||||||||||||||||||||
Wednesday 3 | Thursday 4 | Friday 5 | Saturday 6 | Sunday 7 | Monday 8 | Tuesday 9 | |||||||||||||||
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) | SSW 7 | SSW 7 | SSW 7 | SSW 8 | SSW 8 | SSW 8 | SW 8 | SSW 8 | SSW 8 | SW 9 | SW 8 | SW 9 | SSW 9 | SSW 9 | SSW 8 | SSW 8 | SW 8 | SSW 8 | SSW 9 | S 10 | SSW 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 37 | 54 | 302 | 693 | 520 | 629 | 418 | 413 | 616 | 514 | 602 | 502 | 475 | 618 | 400 | 248 | 256 | 383 | 754 | 1727 | 3812 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross | cross-on | cross-on | on | cross | cross | cross-off | cross-off | cross-off | cross | cross-off | cross-on | cross | cross-on | cross-on | on | cross-on | on | cross-on |
High Tide | 9:44PM0.49m | 8:27AM1.15m | 10:29PM0.48m | 9:06AM1.11m | 11:24PM0.49m | 9:49AM1.05m | 00:26AM0.53m | 10:39AM0.99m | 1:19AM0.59m | 11:40AM0.91m | 2:01AM0.68m | 12:57PM0.83m | 2:37AM0.79m | ||||||||
Low Tide | 3:42PM0.15m | 00:50AM0.44m | 4:26PM0.19m | 1:20AM0.45m | 5:10PM0.22m | 1:59AM0.47m | 5:54PM0.24m | 3:01AM0.51m | 6:36PM0.26m | 4:44AM0.54m | 7:16PM0.28m | 6:48AM0.53m | 7:55PM0.31m | ||||||||
 | |  |  |  |  | | | | | | |  |  | | | |  | | | | |
 | 5:13 | — | — | 5:11 | — | — | 5:11 | — | — | 5:11 | — | — | 5:11 | — | — | 5:11 | — | — | 5:11 | — | — |
 | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:38 | — | — | 6:38 | — |
mm | — | — | 8 | 8 | 10 | 10 | 6 | 6 | 18 | 3 | 2 | 4 | — | 1 | 20 | 3 | 2 | 11 | 24 | 24 | 22 |
Temp °C | 29 | 29 | 29 | 28 | 28 | 28 | 27 | 27 | 27 | 28 | 28 | 28 | 29 | 29 | 28 | 27 | 27 | 28 | 28 | 28 | 28 |
Feels °C | 31 | 32 | 33 | 28 | 29 | 31 | 31 | 30 | 30 | 27 | 27 | 29 | 31 | 31 | 31 | 32 | 31 | 32 | 30 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | NE 10 | NE 10 | SSW 7 | E 10 | E 10 | SSW 8 | SSW 8 | SE 6 | SE 6 | SE 7 | E 10 | E 9 | SSW 9 | SSW 9 | SSW 8 | SSW 8 | SW 8 | SSW 8 | S 9 | S 10 | NE 12 |
| kJ | 63 | 34 | 228 | 17 | 17 | 629 | 376 | 9 | 6 | 8 | 16 | 15 | 475 | 618 | 400 | 248 | 256 | 383 | 450 | 1727 | 22 |
Swell 2 Height (m) Direction Period (s) | SSW 7 | E 10 | E 10 | NE 9 | NNE 9 | E 10 | E 10 | E 10 | E 10 | ENE 10 | SE 12 | SE 6 | E 9 | E 9 | E 9 | E 10 | SE 6 | SE 7 | SW 8 | NE 8 | — |
| kJ | 37 | 31 | 31 | 13 | 8 | 16 | 16 | 16 | 16 | 18 | 5 | 2 | 15 | 16 | 15 | 16 | 12 | 19 | 201 | 17 | — |
Swell 3 Height (m) Direction Period (s) | E 10 | SE 7 | NE 10 | E 7 | SE 12 | SE 13 | SE 11 | SE 12 | NNE 6 | ESE 12 | SE 7 | SE 11 | NNE 6 | NE 6 | NE 14 | ENE 13 | E 10 | NE 9 | NE 9 | ENE 12 | — |
| kJ | 31 | 2 | 26 | 4 | 6 | 7 | 5 | 5 | 3 | 14 | 2 | 5 | 3 | 1 | 7 | 17 | 16 | 23 | 28 | 15 | — |
Wind waves Height (m) Direction Period (s) | WSW 2 | SSW 7 | SSW 7 | SSW 8 | SSW 8 | — | SW 8 | SSW 8 | SSW 8 | SW 9 | SW 8 | SW 9 | — | — | — | — | — | — | SSW 9 | — | SSW 10 |
| kJ | 1 | 54 | 302 | 693 | 520 | — | 418 | 413 | 616 | 514 | 602 | 502 | — | — | — | — | — | — | 754 | — | 3812 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 148 | 14 | 348 | 363 | 348 | 148 | 14 | 14 | 335 | 316 | 14 | 14 | 14 | 14 | 42 | 14 | 14 | 42 | 148 | 329 |
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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