Surf Forecasts:
Nanwan Beach (South Bay) surf forecast from 30 Jun 2026:
- Most powerful swell: Tuesday 7 Jul, 5PM (local time) - 5.5ft (1.7m), 8s period, SSW swell with 370 kJ wave energy.
Best Forecast Surf Conditions for Nanwan Beach (South Bay) this week:
The most powerful waves expected at Nanwan Beach (South Bay) in the next 16 days are 1.7m 8s and forecast to arrive on Tuesday (Jul 07) at 5PM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5PM (Tue 7th Jul) | 5.5ft (1.7m) 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 ForecastSome drizzle, heaviest during Thu night. Warm (max 30°C on Wed afternoon, min 28°C on Tue night). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 6mm), mostly falling on Fri afternoon. Warm (max 30°C on Sun afternoon, min 28°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tue 30 | Wednesday 1 | Thursday 2 | Friday 3 | Saturday 4 | Sunday 5 | Monday 6 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | E 10 | ESE 5 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SSW 10 | SSW 9 | SE 6 | SSW 9 | SW 8 | SSW 8 | SSW 8 | SSW 8 | SW 8 | SW 8 | SW 8 | SW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 48 | 78 | 178 | 211 | 261 | 266 | 258 | 233 | 263 | 223 | 286 | 153 | 202 | 151 | 101 | 101 | 219 | 216 | 260 | 304 | 227 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | cross-on |
High Tide | 8:18PM0.52m | 7:06AM1.21m | 8:47PM0.52m | 7:43AM1.20m | 9:16PM0.52m | 8:19AM1.17m | 9:48PM0.54m | 8:55AM1.12m | 10:23PM0.58m | 9:33AM1.05m | 11:03PM0.63m | 10:15AM0.96m | 11:47PM0.71m | 11:08AM0.84m | |||||||
Low Tide | 2:16PM0.11m | 11:45PM0.43m | 2:51PM0.12m | 00:23AM0.41m | 3:24PM0.14m | 1:03AM0.41m | 3:56PM0.17m | 1:46AM0.42m | 4:26PM0.20m | 2:36AM0.44m | 4:55PM0.23m | 3:38AM0.46m | 5:25PM0.27m | 4:58AM0.47m | |||||||
 |  |  | | | | |  | |  | | | |  | | | | | | | | |
 | — | — | 5:16 | — | — | 5:16 | — | — | 5:16 | — | — | 5:18 | — | — | 5:18 | — | — | 5:18 | — | — | 5:18 |
 | 6:44 | — | — | 6:44 | — | — | 6:44 | — | — | 6:44 | — | — | 6:44 | — | — | 6:44 | — | — | 6:44 | — | 6:44 |
mm | — | — | — | — | — | — | — | 1 | — | 1 | 1 | — | — | — | — | — | 3 | 1 | — | 1 | — |
Temp °C | 29 | 28 | 29 | 30 | 29 | 30 | 30 | 28 | 29 | 29 | 28 | 29 | 29 | 29 | 29 | 30 | 28 | 29 | 29 | 28 | 29 |
Feels °C | 30 | 30 | 30 | 31 | 30 | 30 | 30 | 29 | 30 | 30 | 30 | 30 | 31 | 32 | 30 | 32 | 31 | 32 | 31 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | E 10 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SSW 12 | SSW 10 | SSW 9 | SSW 8 | SSW 9 | SW 8 | SSW 8 | SSW 8 | SSW 8 | SW 8 | SW 8 | SW 8 | SW 8 |
| kJ | 48 | 17 | 7 | 8 | 8 | 8 | 8 | 9 | 57 | 223 | 286 | 140 | 202 | 151 | 101 | 101 | 219 | 216 | 260 | 304 | 227 |
Swell 2 Height (m) Direction Period (s) | SW 7 | ESE 10 | E 14 | E 14 | E 14 | E 13 | E 13 | E 13 | SW 7 | E 9 | E 8 | E 8 | E 8 | E 8 | E 8 | SSW 9 | E 9 | E 9 | SE 5 | E 9 | ESE 16 |
| kJ | 23 | 10 | 4 | 4 | 4 | 4 | 4 | 3 | 8 | 25 | 23 | 36 | 35 | 35 | 35 | 55 | 25 | 24 | 16 | 24 | 53 |
Swell 3 Height (m) Direction Period (s) | E 15 | E 14 | E 14 | — | — | — | — | — | S 8 | E 13 | — | — | WSW 10 | WSW 8 | WSW 8 | E 8 | W 8 | ESE 9 | E 9 | ESE 9 | ESE 10 |
| kJ | 4 | 4 | 4 | — | — | — | — | — | 1 | 3 | — | — | 10 | 7 | 11 | 22 | 12 | 8 | 24 | 8 | 10 |
Wind waves Height (m) Direction Period (s) | SE 5 | ESE 5 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 5 | SE 5 | — | SE 5 | ESE 5 |
| kJ | 33 | 78 | 178 | 211 | 261 | 266 | 258 | 233 | 263 | 195 | 144 | 153 | 106 | 75 | 80 | 56 | 36 | 25 | — | 6 | 80 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 316 | 148 | 148 | 148 | 148 | 676 | 148 | 148 | 885 | 451 | 148 | 451 | 148 | 494 | 148 | 148 | 42 | 694 | 693 | 14 | 694 |
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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