- Forecast
- Maps
- Live
- Weather State
- Spot Information
Surf Forecasts:
Nanwan Beach (South Bay) surfForecast / South / Taiwan
16 Day Weather and Surf, issued 7 am Monday 18 May 2026 CSTForecast update in hr min s Forecast update imminent
Nanwan Beach (South Bay) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Nanwan Beach (South Bay) sea temperature is
28.6° C
(Which is slightly warmer than usual)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 (May 18) at 5PM. The primary swell is predicted to be 1.4m and 9s period with a secondary swell of 0.1m 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 1.4m 9s and forecast to arrive on Monday (May 18) at 5PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 9s period and expected on Monday (May 18) at 2PM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Mon 18th May) | 4.5ft (1.4m) 9s |
| Best Surf | 5PM (Mon 18th May) | 4.5ft (1.4m) 9s |
| Most Powerful | 5PM (Mon 18th May) | 4.5ft (1.4m) 9s |
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 ForecastMostly dry. Warm (max 28°C on Wed afternoon, min 25°C on Mon night). Winds decreasing (fresh winds from the ENE on Mon morning, calm by Tue night). | Days 4-6 Weather SummaryMostly dry. Warm (max 28°C on Thu morning, min 27°C on Thu morning). Winds increasing (calm on Fri morning, fresh winds from the WNW by Sat afternoon). | ||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
SW 7 | E 9 | E 9 | E 9 | E 9 | WSW 7 | E 9 | E 9 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | |
2 | 325 | 287 | 246 | 203 | 4 | 159 | 166 | 188 | 148 | 145 | 151 | 151 | 151 | 117 | 113 | 113 | 113 | 113 | 110 | 110 | |
Wind (km/h) | |||||||||||||||||||||
cross | cross-off | cross | cross-on | cross | glassy | on | cross | 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 | |
High Tide | 9:02PM0.55m | 7:52AM1.38m | 10:07PM0.48m | 8:41AM1.34m | 11:26PM0.45m | 9:37AM1.26m | 10:39AM1.15m | 11:51AM1.03m | 3:06AM0.60m | 1:11PM0.92m | 3:30AM0.70m | ||||||||||
Low Tide | 2:46PM-0.07m | 00:38AM0.42m | 3:47PM-0.04m | 1:03AM0.42m | 4:52PM0.02m | 1:28AM0.43m | 6:00PM0.09m | 7:08PM0.15m | 8:05PM0.21m | 6:13AM0.56m | 8:49PM0.27m | ||||||||||
 |  |  | | |  | | | | | | | | | | | | | | | | |
 | 5:16 | — | — | 5:16 | — | — | 5:15 | — | — | 5:15 | — | — | 5:15 | — | — | 5:15 | — | — | 5:13 | — | — |
 | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — | 6:31 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
24 | 25 | 26 | 29 | 30 | 29 | 29 | 30 | 29 | 30 | 29 | 28 | 32 | 30 | 30 | 30 | 28 | 30 | 29 | 28 | 31 | |
Swell 1 Height (m) Direction Period (s) | SW 7 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 |
 kJ | 2 | 325 | 287 | 246 | 203 | 169 | 159 | 166 | 188 | 148 | 145 | 151 | 151 | 151 | 117 | 113 | 113 | 113 | 113 | 110 | 110 |
Swell 2 Height (m) Direction Period (s) | NW 5 | SW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 6 | SSE 4 | SW 7 | SW 7 | WSW 7 | WSW 8 | WSW 7 | WSW 7 | SW 8 | SW 8 | WSW 7 | WSW 7 | SW 7 | SW 6 |
| kJ | 1 | 2 | 5 | 4 | 4 | 4 | 4 | 4 | 3 | 12 | 14 | 32 | 64 | 37 | 35 | 18 | 28 | 20 | 19 | 12 | 10 |
Swell 3 Height (m) Direction Period (s) | — | NW 5 | NW 5 | NW 5 | — | — | — | WSW 6 | WSW 7 | SSE 4 | SSE 4 | SSE 4 | NW 3 | SE 5 | SE 5 | S 6 | — | WSW 9 | N 7 | N 9 | — |
| kJ | — | 1 | 1 | 1 | — | — | — | 4 | 5 | 3 | 1 | 2 | 3 | 1 | 1 | 1 | — | 8 | 1 | 1 | — |
Wind waves Height (m) Direction Period (s) | ENE 9 | — | — | — | — | — | SSE 3 | S 4 | S 4 | S 4 | WSW 2 | W 3 | W 3 | W 3 | WNW 3 | WSW 7 | W 3 | WNW 4 | WNW 3 | WNW 3 | WNW 3 |
| kJ | 432 | — | — | — | — | — | 4 | 2 | 4 | 3 | 1 | 5 | 4 | 2 | 4 | 26 | 7 | 7 | 7 | 7 | 2 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 694 | 0 | 79 | 42 | 2 | 2 | 329 | 329 | 2 | 14 | 42 | 42 | 2 | 14 | 2 | 42 | 42 | 2 | 42 | 42 | 2 |
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