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Surf Forecasts:

Nanwan Beach (South Bay) surfForecast / South / Taiwan

information circle12 Day Weather and Surf, issued 7 am Wednesday 21 Jan 2026 CST
Forecast 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
25.1° C
 (Which is 1.0°C warmer than normal for this time of year)

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 Tuesday (Jan 27) at 11AM. The primary swell is predicted to be 1.6m and 10s period. 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 2.3m 9s and forecast to arrive on Monday (Jan 26) 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 4.0m 9s period and expected on Wednesday (Jan 21) at 11AM.

Wave TypeTime (CST) & Date Wave Height & Period
Next good surf (1 star+)11AM (Tue 27th Jan)5ft (1.6m) 10s
Best Surf11AM (Tue 27th Jan)5ft (1.6m) 10s
Most Powerful 2AM (Mon 26th Jan)7.5ft (2.3m) 9s

Table - best surf conditions forecast for Nanwan Beach (South Bay) over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Light rain (total 2mm), mostly falling on Fri night. Very mild (max 19°C on Fri afternoon, min 16°C on Wed night). Winds decreasing (strong winds from the NE on Wed morning, moderate winds from the NE by Fri afternoon).

Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Sat morning. Warm (max 22°C on Mon afternoon, min 19°C on Sat morning). Winds decreasing (strong winds from the ENE on Sat morning, moderate winds from the NE by Mon night).

Wednesday
21
Thursday
22
Friday
23
Saturday
24
Sunday
25
Monday
26
Tuesday
27
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
2
2
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
4
NE
3.5
NE
3.5
NE
3
ENE
2.4
ENE
2.5
ENE
2.1
ENE
1.8
ENE
1.9
ENE
2.1
ENE
2.2
ENE
2.4
E
2.1
E
2.3
E
2.3
E
2.1
E
1.9
ESE
1.7
ESE
1.6
E
1.5
E
2.1
ENE
Period(s) (?)99999778777789999101096
Wave
Graph
(?)Metric surfscale
Energy kJ (?)00000000000611487809866715612540469405306
Wind
(km/h)
50
NE
40
NE
50
NE
40
NE
35
NE
30
NE
30
NE
25
NE
30
NE
40
ENE
35
ENE
35
ENE
40
ENE
35
ENE
35
ENE
25
ENE
25
ENE
25
ENE
15
NE
15
NE
30
NE
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-
off		cross-
off		crosscrosscrosscrosscrosscross-
off		crosscrosscross-
off		cross-
off		cross-
off
High Tide
/ height (m)
8:55AM
0.58
8:19PM
1.21
9:24AM
0.63
8:56PM
1.13
9:57AM
0.68
9:35PM
1.02
10:35AM
0.75
10:20PM
0.88
11:20AM
0.83
11:18PM
0.73
12:14PM
0.91
12:49AM
0.58
1:18PM
0.99
3:26AM
0.49
Low Tide
/ height (m)
1:21PM
0.35
3:35AM
0.14
2:08PM
0.36
4:02AM
0.19
3:02PM
0.37
4:27AM
0.24
4:07PM
0.39
4:53AM
0.30
5:30PM
0.41
5:18AM
0.37
7:23PM
0.38
5:45AM
0.42
9:26PM
0.29
Wednesday
21
Thursday
22
Friday
23
Saturday
24
Sunday
25
Monday
26
Tuesday
27
Sunrise6:37--6:37--6:37--6:37--6:37--6:37--6:35--
Sunset-5:37--5:38--5:38--5:39--5:40--5:40--5:42-
clear
clear
part cloud
part cloud
part cloud
clear
clear
part cloud
rain showers
rain showers
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
clear
Rain (mm)
--------22-----------
Temp. °C181817171817181919202121202121212221222322
Feels °C (?)1010891110121415131414141415181919222419
  • 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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View detailed surf forecast for Nanwan Beach (South Bay) at:
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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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