Nanwan Beach (South Bay) Surf Forecast

/ South (6 surf breaks) /

Taiwan (13 surf breaks) / Lat Long: (21.96° N 120.76° E)

Surf Forecasts:

Nanwan Beach (South Bay) surfForecast / South / Taiwan

12 Day Weather and Surf, issued 7 am Sunday 31 Aug 2025 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 29.4° 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 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 31) at 8PM. The primary swell is predicted to be 0.7m and 9s period with a secondary swell of 0.6m and 8s. 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 1.5m 7s and forecast to arrive on Sunday (Sep 07) 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 0.2m 7s period and expected on Friday (Sep 05) at 8PM.

Wave Type	Time (CST) & Date	Wave Height & Period
Next good surf (1 star+)	8PM (Sun 31st Aug)	2.5ft (0.7m) 9s
Best Surf	8PM (Sun 31st Aug)	2.5ft (0.7m) 9s
Most Powerful	2PM (Sun 7th Sep)	5ft (1.5m) 7s

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

Updates in hr min s Forecast update imminent

12 Days Hourly

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	Short Range Forecast Mostly dry. Warm (max 30°C on Mon afternoon, min 27°C on Sun night). Wind will be generally light.									Days 3-6 Weather Summary Mostly dry. Warm (max 30°C on Wed afternoon, min 27°C on Wed night). Wind will be generally light.
	Sunday 31			Monday 01			Tuesday 02			Wednesday 03			Thursday 04			Friday 05			Saturday 06
	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night
Rating (10 max)	0	0	0	1	1	0	0	1	1	0	0	0	1	0	0	1	1	1	1	1	1
Swell Height Map See all maps
Wave Height (m) & direction (?)	E	SW	SW	SW	SW	E	E	E	E	ESE	ESE	E	E	E	SW	E	SW	E	E	E	SSW
Period(s) (?)	9	8	8	8	8	9	8	9	8	9	9	8	9	9	8	8	8	10	10	10	7
Wave Graph (?)
Energy (?)	158	156	147	139	144	124	169	170	118	155	151	119	125	116	113	96	96	104	89	87	102
Wind (km/h)	E	E	ENE	NE	NE	ENE	ENE	ENE	ENE	ESE	E	ENE	E	ENE	ENE	NE	NNE	NNE	WNW	NNW	NW
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- on	cross	cross	cross- off	cross- off	cross	cross	glass	cross- off	cross- on	cross	cross	glass	cross	cross	cross- off	glass	cross- off	cross- off	off	off
High Tide / height (m)	11:48AM 0.45		11:49PM 0.93			1:13AM 0.94			2:40AM 0.99			3:47AM 1.06		6:18PM 0.55	4:39AM 1.14		6:24PM 0.59		5:24AM 1.20	6:41PM 0.64
Low Tide / height (m)		2:40PM 0.44		9:47AM 0.35			10:48AM 0.28			11:22AM 0.21			11:51AM 0.15		9:22PM 0.50	12:19PM 0.11		10:28PM 0.43	12:46PM 0.09		11:21PM 0.35

	Sunday 31			Monday 01			Tuesday 02			Wednesday 03			Thursday 04			Friday 05			Saturday 06
Sunrise	5:39	-	-	5:39	-	-	5:39	-	-	5:39	-	-	5:39	-	-	5:41	-	-	5:41	-	-
Sunset	-	6:14	-	-	6:13	-	-	6:12	-	-	6:12	-	-	6:10	-	-	6:09	-	-	6:08	-

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Temp. °C	29	29	29	29	30	29	30	30	29	29	30	29	29	30	28	29	29	28	29	29	29
Feels °C (?)	33	33	33	32	33	33	34	35	33	33	33	33	33	34	30	32	33	30	32	31	32

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Recent Eyeball Surf Reports for South

Wind Update Continuing clean conditions at Nanwan Beach (South Bay) (light winds from the ENE.(Wind varies from 050 to 110 degs) at Kaohsiung International Airport 81 km from Nanwan Beach (South Bay)). 0.7m 8s swell from the SSW with a 0.5m 8s swell from the ESE and a 0.5m 4s local chop from the E as well as a 0.4m 9s swell, also from the E. 4 swells combining to make bigger set waves.
1 hour 57 minutes ago Nanwan Beach (South Bay)

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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.