Surf Forecasts:
Nanwan Beach (South Bay) surf forecast from 20 Jun 2026:
- Best quality surf: Tuesday 23 Jun, 8PM (local time) - 5.5ft (1.7m), 12s period, ESE swell with offshore winds.
- Most powerful swell: Saturday 27 Jun, 2AM (local time) - 10ft (3.0m), 12s period, E swell with 2,180 kJ wave energy.
- Next surfable swell (1★+): Monday 22 Jun, 11PM (local time) - 3.5ft (1.1m), 12s period with ESE 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 (Jun 22) at 11PM. The primary swell is predicted to be 1.1m and 12s period with a secondary swell of 0.4m and 6s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Nanwan Beach (South Bay) in the next 16 days are 3.0m 12s and forecast to arrive on Saturday (Jun 27) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 11s period and expected on Saturday (Jun 27) at 11AM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Mon 22nd Jun) | 3.5ft (1.1m) 12s |
| Best Surf | 8PM (Tue 23rd Jun) | 5.5ft (1.7m) 12s |
| Most Powerful | 2AM (Sat 27th Jun) | 10ft (3.0m) 12s |
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 29°C on Sat afternoon, min 27°C on Sat night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Thu night. Warm (max 29°C on Tue afternoon, min 27°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | Friday 26 | |||||||||||||||
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) | WSW 7 | WSW 7 | WSW 7 | WSW 8 | WSW 7 | SE 9 | ESE 13 | ESE 12 | ESE 12 | ESE 13 | ESE 12 | ESE 12 | ESE 11 | ESE 11 | ESE 11 | E 11 | E 11 | E 11 | E 11 | E 11 | E 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 43 | 47 | 46 | 39 | 36 | 24 | 101 | 169 | 380 | 917 | 901 | 671 | 524 | 476 | 531 | 694 | 669 | 682 | 1107 | 1048 | 2180 |
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 | off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | cross-off | off | off | cross-off | cross |
High Tide | 10:25AM1.11m | 00:31AM0.60m | 11:23AM0.95m | 1:21AM0.69m | 12:28PM0.80m | 2:07AM0.78m | 1:47PM0.68m | 2:48AM0.87m | 3:17PM0.59m | 3:25AM0.96m | 4:41PM0.55m | 4:01AM1.03m | 5:48PM0.54m | 4:37AM1.09m | |||||||
Low Tide | 6:10PM0.20m | 4:31AM0.49m | 6:47PM0.28m | 6:20AM0.51m | 7:19PM0.35m | 8:19AM0.48m | 7:46PM0.40m | 9:55AM0.40m | 8:11PM0.44m | 11:00AM0.32m | 8:39PM0.46m | 11:48AM0.24m | 9:11PM0.47m | ||||||||
 | |  | | | | | | | | |  | |  |  | |  | | | | | |
 | 5:13 | — | — | 5:13 | — | — | 5:13 | — | — | 5:13 | — | — | 5:15 | — | — | 5:15 | — | — | 5:15 | — | — |
 | — | 6:42 | — | — | 6:43 | — | — | 6:43 | — | — | 6:43 | — | — | 6:43 | — | — | 6:43 | — | — | 6:43 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | 3 | — | 1 | 3 | 14 | 38 | 187 |
Temp °C | 28 | 29 | 28 | 28 | 29 | 28 | 28 | 29 | 28 | 28 | 29 | 28 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 27 | 27 |
Feels °C | 32 | 31 | 30 | 29 | 30 | 30 | 28 | 28 | 30 | 29 | 29 | 31 | 31 | 30 | 33 | 32 | 33 | 31 | 30 | 24 | 23 |
Swell 1 Height (m) Direction Period (s) | WSW 7 | WSW 7 | WSW 7 | WSW 8 | WSW 7 | WSW 7 | E 9 | ESE 12 | ESE 12 | ESE 13 | ESE 12 | ESE 12 | ESE 11 | ESE 11 | ESE 11 | E 11 | E 11 | E 11 | E 11 | E 11 | E 12 |
| kJ | 43 | 47 | 46 | 39 | 36 | 18 | 57 | 169 | 380 | 917 | 901 | 671 | 524 | 476 | 531 | 694 | 669 | 682 | 1107 | 1048 | 2180 |
Swell 2 Height (m) Direction Period (s) | SE 4 | SE 10 | SE 10 | ESE 9 | ESE 9 | ESE 8 | ESE 13 | E 9 | WSW 5 | — | — | WSW 5 | NE 11 | NE 10 | NE 12 | NNE 11 | NE 8 | WSW 6 | SW 7 | SW 7 | SW 7 |
| kJ | 5 | 24 | 23 | 34 | 32 | 24 | 101 | 57 | 17 | — | — | 18 | 5 | 4 | 5 | 11 | 2 | 74 | 88 | 79 | 109 |
Swell 3 Height (m) Direction Period (s) | SE 10 | E 9 | E 9 | E 9 | E 9 | SE 9 | WSW 6 | NE 9 | — | — | — | — | N 11 | NE 11 | S 9 | NE 10 | SE 8 | NE 7 | NE 7 | NE 9 | — |
| kJ | 25 | 14 | 14 | 13 | 13 | 21 | 16 | 3 | — | — | — | — | 2 | 5 | 2 | 4 | 3 | 2 | 2 | 3 | — |
Wind waves Height (m) Direction Period (s) | — | — | WNW 3 | WNW 3 | WNW 3 | WNW 3 | WNW 3 | W 4 | W 4 | W 4 | W 4 | WNW 5 | W 5 | W 5 | WSW 6 | WSW 6 | WSW 6 | — | — | — | WSW 7 |
| kJ | — | — | 1 | 1 | 6 | 4 | 6 | 34 | 27 | 22 | 38 | 16 | 37 | 47 | 54 | 53 | 71 | — | — | — | 171 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 14 | 676 | 2 | 42 | 42 | 42 | 42 | 42 | 2 | 42 | 42 | 0 | 2 | 2 | 2 | 14 | 14 | 2 | 859 | 494 | 148 |
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