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Nanwan Beach (South Bay) surfForecast / South / Taiwan
12 Day Weather and Surf, issued 1 am Wednesday 16 Jul 2025 CST
Best Forecast Surf Conditions for Nanwan Beach (South Bay) this week:
The surf forecast for Nanwan Beach (South Bay) over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Jul 16) at 8PM. The primary swell is predicted to be 1.0m and 5s period with a secondary swell of 0.5m and 9s. Another secondary swell of 0.3m and 6s is also forecast. 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 12 days are 3.5m 12s and forecast to arrive on Saturday (Jul 19) at 2PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.5m 13s period and expected on Monday (Jul 21) at 11AM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Wed 16th Jul) | 3.5ft (1.0m) 5s |
| Best Surf | 8PM (Sun 20th Jul) | 8ft (2.4m) 9s |
| Most Powerful | 2PM (Sat 19th Jul) | 11ft (3.5m) 12s |
Table - best surf conditions forecast for Nanwan Beach (South Bay) over the next 12 days.
Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | Saturday 26 | Sunday 27 | |||||||||||||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  |  |  |  |  | ||||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 10 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 12 | 12 | 9 | 9 | 12 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 8 | 8 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 102 | 61 | 91 | 112 | 114 | 143 | 147 | 221 | 480 | 3179 | 3528 | 2182 | 3249 | 1633 | 2417 | 736 | 877 | 1170 | 1023 | 1028 | 2183 | 1247 | 1289 | 1184 | 971 | 832 | 1071 | 1034 | 603 | 394 | 317 | 345 | 276 | 147 | 147 | 837 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross- off | cross- off | cross- off | cross | cross- on | cross- on | cross- on | cross | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross- off | off | cross- off | cross- off | cross- off | cross | cross | cross- off | cross- off | cross | cross | cross | cross | cross | cross |
High Tide / height (m) | 10:07AM 1.02 | 11:24PM 0.73 | 11:01AM 0.87 | 12:13AM 0.82 | 12:13PM 0.72 | 1:07AM 0.92 | 1:55PM 0.59 | 2:06AM 1.02 | 4:02PM 0.52 | 3:05AM 1.12 | 5:44PM 0.51 | 4:04AM 1.21 | 6:45PM 0.51 | 4:59AM 1.28 | 7:23PM 0.51 | 5:51AM 1.33 | 7:54PM 0.52 | 6:40AM 1.34 | 8:22PM 0.53 | 7:24AM 1.31 | 8:49PM 0.56 | 8:06AM 1.24 | 9:17PM 0.60 | |||||||||||||
Low Tide / height (m) | 5:09PM 0.24 | 4:47AM 0.43 | 5:40PM 0.31 | 6:25AM 0.42 | 6:10PM 0.37 | 8:19AM 0.35 | 6:43PM 0.43 | 9:59AM 0.24 | 7:22PM 0.47 | 11:14AM 0.13 | 8:15PM 0.48 | 12:11PM 0.04 | 9:19PM 0.48 | 1:01PM -0.00 | 10:22PM 0.45 | 1:44PM -0.01 | 11:19PM 0.41 | 2:24PM 0.01 | 12:12AM 0.38 | 2:59PM 0.06 | 1:01AM 0.36 | 3:29PM 0.13 | 1:50AM 0.36 | |||||||||||||
Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | Saturday 26 | Sunday 27 | |||||||||||||||||||||||||
| Sunrise | 5:22 | - | - | 5:22 | - | - | 5:22 | - | - | 5:22 | - | - | 5:24 | - | - | 5:24 | - | - | 5:24 | - | - | 5:24 | - | - | 5:24 | - | - | 5:26 | - | - | 5:26 | - | - | 5:26 | - | - |
| Sunset | - | 6:43 | - | - | 6:42 | - | - | 6:42 | - | - | 6:42 | - | - | 6:42 | - | - | 6:40 | - | - | 6:40 | - | - | 6:40 | - | - | 6:39 | - | - | 6:39 | - | - | 6:38 | - | - | 6:38 | - |
 | |  |  | |  |  | | | | | | |  | | | | | | | | | | |  | |  | | |  | | | | | | | |
Rain (mm) | - | - | - | - | - | 1 | 1 | 2 | 3 | 58 | 12 | 56 | 11 | 7 | 13 | 10 | 13 | - | - | - | 1 | - | - | - | 1 | - | 1 | - | - | - | - | - | 2 | - | - | - |
| Temp. °C | 29 | 29 | 28 | 29 | 29 | 29 | 30 | 30 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 30 | 30 | 30 | 30 | 30 | 29 | 29 | 29 | 29 |
| Feels °C (?) | 31 | 30 | 32 | 31 | 31 | 35 | 34 | 34 | 29 | 26 | 21 | 28 | 29 | 30 | 33 | 30 | 26 | 24 | 29 | 32 | 34 | 31 | 33 | 26 | 28 | 28 | 28 | 30 | 29 | 29 | 29 | 30 | 31 | 32 | 31 | 34 |
Short Range Forecast: Light rain (total 7mm), mostly falling on Fri afternoon. Warm (max 30°C on Fri morning, min 28°C on Wed night). Winds increasing (light winds from the NNW on Thu night, fresh winds from the NNE by Fri night). | Days 3-6 Weather Summary Heavy rain (total 180mm), heaviest during Sat morning. Warm (max 28°C on Sat morning, min 26°C on Sat morning). Winds decreasing (gales from the N on Sat afternoon, light winds from the ESE by Sun night). | Days 6-9 Weather Summary Light rain (total 3mm), mostly falling on Tue night. Warm (max 29°C on Tue morning, min 28°C on Tue night). Winds increasing (light winds from the NW on Tue afternoon, near gales from the WNW by Wed night). | Long Range Forecast: Light rain (total 2mm), mostly falling on Sat night. Warm (max 30°C on Fri morning, min 28°C on Sat night). Winds decreasing (strong winds from the WSW on Fri afternoon, light winds from the WSW by Sun night). | |||||||||||||||||||||||||||||||||
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Recent Eyeball Surf Reports for South
Continuing clean conditions at Nanwan Beach (South Bay) (calm at Kaohsiung International Airport 81 km from Nanwan Beach (South Bay)). 0.8m 5s windswell from the SW with a 0.8m 5s windswell from the SW and a 0.3m 9s swell from the E. Swells combining to make to make bigger set waves.
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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 12 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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