Nanwan Beach (South Bay) Surf Break

Lat Long: 21.96° N 120.76° E

Nanwan Beach (South Bay) Surf Forecast and Surf Report

Issued: 7 am 03 Aug 2026 (local time)

Forecast update in  hr  min

Today's Nanwan Beach (South Bay) sea temperature is
29.4° C
0.4° 

Nanwan Beach (South Bay) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Nanwan Beach (South Bay) surf forecast from 3 Aug 2026:

  • Best quality surf: Saturday 8 Aug, 8PM (local time) - 11ft (3.5m), 10s period, WSW swell with cross-offshore winds.
  • Most powerful swell: Monday 10 Aug, 5AM (local time) - 18ft (5.5m), 11s period, SW swell with 6,191 kJ wave energy.
  • Next surfable swell (1★+): Monday 3 Aug, 5PM (local time) - 3ft (0.9m), 16s period with E 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 (Aug 03) at 5PM. The primary swell is predicted to be 0.9m and 16s period with a secondary swell of 0.5m and 7s. Another secondary swell of 1.0m 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 16 days are 5.5m 11s and forecast to arrive on Monday (Aug 10) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 18s period and expected on Thursday (Aug 06) at 2PM.

Wave TypeTime (CST) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Mon 3rd Aug)3ft (0.9m) 16s
Best Surf 8PM (Sat 8th Aug)11ft (3.5m) 10s
Most Powerful 5AM (Mon 10th Aug)18ft (5.5m) 11s

Table - best surf conditions forecast for Nanwan Beach (South Bay) over the next 16 days.


The Lowdown

Alright, Rusty here. Let’s break it down. We’ve got a run of surf that starts off sketchy but could build to something special. The main break on the radar is Nanwan Beach (South Bay), a beach-and-reef setup that’s fairly consistent and exposed to the southeast. The water temp is 85°F, dead average for this time of year, so no surprises.

The first few days need patience. Monday morning, August 3rd, is a scratch session – only 2ft of east swell, long period at 15 seconds, but light cross-off wind and weak energy (323). It’s clean but just not enough. The afternoon picks up a little, 3ft from the east with a 16-second period and a light breeze, but still very marginal.

Things get more interesting Tuesday the 4th. Morning brings 4ft of east swell, 16-second period, and the energy is building (878). The wind is cross-off from the ENE, keeping it clean. Tuesday afternoon is the first real standout: the swell bumps to 5ft, still from the east, period at 16 seconds, and the wind goes offshore from the NNW. That’s the magic combo – glassy, clean, and the energy jumps to 1149. This is the best early offer.

Wednesday the 5th is the peak of the first run. Morning sees 6ft of east swell with a 17-second period – proper groundswell. The energy is pumping (2220), and it’s clean with a light cross-off. This is excellent for experienced surfers; the wave shape will be solid, but that long period can make the beach break a bit straight. The afternoon drops to a tiny 2ft west windswell, so don’t bother.

Then we hit a rough patch. From Thursday the 6th through to Sunday the 9th morning, the swell gets bigger, but the wind is howling from the west and northwest, 25-30 mph, all cross-off. The waves build from 10ft to 16ft, but the quality is poor. The energy is strong (1017 to 4560), but the wind is tearing it up. Saturday the 8th and Sunday the 9th have swell too big for this break, over 10ft and 16ft. Kite surfers, take note.

The onslaught continues into the second week. Monday the 10th through Wednesday the 12th is a write-off – near-gale winds, risk of thunderstorms, and 13ft to 18ft swells. The energy is massive (4643 to 7341), but the cross-shore wind and mess mean it’s not for surfing. Thursday the 13th the wind drops a bit, but the swell is still 12ft, too big.

The final stretch, from Friday the 14th to Tuesday the 18th, sees the swell settle back to 6ft to 8ft, from the SW and SSW, with periods around 9-10 seconds. The wind is lighter, mostly cross-off from the WNW. The energy is moderate (611 to 739). These are clean, manageable waves, but they’re rideable, not exciting.

The standout: Tuesday the 4th afternoon. Offshore wind, 5ft east swell, long 16-second period, and clean. Wednesday the 5th morning is also excellent for experienced surfers looking for more power. The second week is promising but less certain, and crowds at Nanwan are often present, so be prepared.

Rusty out.

Short Range Forecast

Mostly dry. Warm (max 30°C on Mon afternoon, min 27°C on Mon night). Wind will be generally light.

Days 4-6 Weather Summary

Some drizzle, heaviest during Thu night. Warm (max 30°C on Sat morning, min 28°C on Thu morning). Winds increasing (light winds from the WNW on Thu night, near gales from the WNW by Sat night).

Monday
3
Tuesday
4
Wednesday
5
Thursday
6
Friday
7
Saturday
8
Sunday
9
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
2
3
3
3
4
4
4
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.7
E
15
0.9
E
16
1.2
E
16
1.3
E
16
1.5
E
16
1.7
E
18
1.9
E
17
1.9
E
17
2.3
ENE
18
0.9
WSW
8
0.9
WSW
8
0.7
SW
8
1.1
SW
9
1.1
SW
9
2.1
WSW
6
3
WSW
7
3.5
WSW
9
4
WSW
9
4.5
WSW
10
4.5
SW
10
5
SW
10
Wave Graph
Metric surfscale
Energy kJ
225
412
705
822
1106
1759
2196
2072
0
92
112
64
170
189
300
857
1847
2224
4208
3999
5542
Wind (km/h)
20
NE
15
NE
10
NNE
15
NE
5
N
10
NNE
10
W
15
WNW
10
W
20
WNW
20
WNW
35
WNW
50
WNW
40
WNW
45
WNW
50
W
50
WNW
55
WNW
50
W
50
W
60
W
Wind State
cross-off
cross-off
cross-off
cross-off
glassy
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
9:16AM0.99m
10:03PM0.79m
9:57AM0.86m
10:43PM0.86m
10:48AM0.72m
11:31PM0.93m
12:04PM0.58m
00:31AM0.99m
2:26PM0.49m
1:43AM1.07m
5:31PM0.49m
2:58AM1.15m
6:13PM0.51m
4:05AM1.24m
Low Tide
3:56PM0.26m
3:48AM0.37m
4:18PM0.31m
5:01AM0.38m
4:40PM0.37m
6:37AM0.37m
5:03PM0.41m
8:36AM0.31m
5:28PM0.46m
10:14AM0.20m
6:01PM0.49m
11:21AM0.09m
8:02PM0.49m
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
rain showers
clear
clear
part cloud
clear
clear
part cloud
thunderstorm
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:30
5:30
5:30
5:31
5:31
5:31
5:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:36
6:35
6:34
6:34
6:32
6:32
6:31
 mm
1
1
Temp °C
29
30
28
29
30
28
29
29
29
29
29
29
29
29
29
30
30
30
30
30
31
Feels °C
31
32
31
31
34
32
33
32
34
31
32
33
27
26
28
28
27
29
27
27
26
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Nanwan Beach (South Bay):

join our community of surf reporters

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 locationNearest