Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Nanwan Beach (South Bay) surfForecast / South / Taiwan
48hr Weather and Surf, issued 7 pm Wednesday 17 Dec 2025 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
25.9° C
(Which is 1.1°C warmer than normal for this time of year)| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Dec) | - | - |
| Afternoon (17 Dec) | 5.5ft (1.7m) | 9s |
| Evening (17 Dec) | - | - |
Table - waves today at Nanwan Beach (South Bay). (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||||||||
| 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 9 | 9 | 6 | 7 | 7 | 7 | 13 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 486 | 0 | 0 | 0 | 0 | 0 | 3 | 474 | 491 | 569 | 628 | 753 | 800 | 829 | 888 | 854 | 1044 | 1037 | 1124 | 1099 | 999 | 996 | 0 | 919 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross | cross | cross | cross | cross | cross | cross- off | cross- off | cross | cross | cross | cross- off | cross- off | cross | cross- off |
High Tide / height (m) | 4:55PM 1.10 | 6:38AM 0.56 | 5:27PM 1.15 | 7:17AM 0.55 | 6:01PM 1.20 | 7:52AM 0.54 | ||||||||||||||||||
Low Tide / height (m) | 12:32AM 0.16 | 10:18AM 0.46 | 1:08AM 0.11 | 10:49AM 0.46 | 1:44AM 0.09 | 11:20AM 0.44 | ||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:28 | - | - | - | - | - | - | - | 6:28 | - | - | - | - | - | - | - | 6:30 | - | - |
| Sunset | 5:15 | - | - | - | - | - | - | - | 5:16 | - | - | - | - | - | - | - | 5:16 | - | - | - | - | - | - | - |
 |  |  |  | |  | |  | | |  | | |  | | | | | | | | | | | |
Rain (mm) | - | - | - | 1 | - | - | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 4 | 3 | 3 | 3 | 1 | 1 | 1 | 1 |
| Temp. °C | 23 | 23 | 23 | 23 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 22 | 23 | 22 | 22 | 21 | 22 | 22 | 22 | 22 | 22 | 23 | 22 |
| Feels °C (?) | 21 | 19 | 17 | 17 | 16 | 17 | 17 | 17 | 19 | 20 | 20 | 21 | 20 | 21 | 19 | 20 | 19 | 20 | 20 | 20 | 19 | 20 | 21 | 18 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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