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 pm 28 Jul 2026 (local time)

Forecast update in  hr  min

Today's Nanwan Beach (South Bay) sea temperature is
29.6° C
0.7° 

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 28 Jul 2026:

  • Best quality surf: Tuesday 4 Aug, 5PM (local time) - 4.5ft (1.3m), 16s period, E swell with cross-offshore winds.
  • Most powerful swell: Tuesday 4 Aug, 11PM (local time) - 5ft (1.6m), 18s period, E swell with 1,597 kJ wave energy.
  • Next surfable swell (1★+): Monday 3 Aug, 5AM (local time) - 1.5ft (0.4m), 17s 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 5AM. The primary swell is predicted to be 0.4m and 17s period with a secondary swell of 0.8m and 8s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Nanwan Beach (South Bay) in the next 16 days are 1.6m 18s and forecast to arrive on Tuesday (Aug 04) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives.

Wave TypeTime (CST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Mon 3rd Aug)1.5ft (0.4m) 17s
Best Surf 5PM (Tue 4th Aug)4.5ft (1.3m) 16s
Most Powerful11PM (Tue 4th Aug)5ft (1.6m) 18s

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


The Lowdown

Alright, Rusty here. Let's have a look at what's on the menu for the next couple of weeks.

Right off the bat, it’s a bit of a slow start. We’ve got a run of poor surf, so you’re looking at a gap of nearly a week before anything really worth paddling out for shows up. From Wednesday, July 29th through to Monday, August 3rd, it’s mostly small, weak, and choppy. The combined swell energy is low, bouncing between 47 and 118, and the wind is all over the place, mostly cross or onshore. Not worth getting wet for.

Things start to get interesting on Tuesday, August 4th. A real pulse of energy arrives overnight. The combined swell energy jumps up to 995 by Tuesday morning, and by the afternoon, it’s kicking at 1351. We’re looking at a solid 4ft to 5ft groundswell from the east, with a long 15 to 16 second period. The wind is light and cross-offshore from the west, which should keep it clean. This is the standout of the first week. Nanwan Beach (South Bay) is a beach and reef setup, and with that long period, it’s going to be lining up nicely. The water temp is about average for this time of year.

Wednesday, August 5th morning looks even better if you can handle a bit more size. The swell bumps up to 6ft from the east, 17 seconds, with the combined energy at 1825. The wind is glassy to light cross-off. That’s proper, clean groundswell. It’s going to be a bit much for beginners, but for the experienced crew, it’s a treat. The crowds are often here, so expect some company.

After that, the swell drops off quickly Wednesday afternoon, and we get a few more days of weak, poor quality surf. The combined energy dips back down to 84 and 76, with a short period windswell. Not much to write home about.

Then, from Saturday, August 8th, we get another big pulse. The swell comes up to 10ft to 12ft from the southwest, with a period of 9 to 10 seconds. The combined energy is massive, hitting 2238 by Saturday afternoon. The wind is glassy, which is a dream. But here’s the thing – that’s too big for this break. It’s a beach and reef setup, and 12ft is going to be a washing machine. Only for the experts, and even then, it’s a gamble. You’d be better off looking at a point or reef nearby if you’ve got the skills.

Sunday, August 9th is still pumping, with 10ft swell from the southwest, 11 seconds, and a combined energy of 2297. The morning has a moderate cross-offshore wind, but the afternoon turns glassy again. That’s a solid, powerful swell, but again, it’s big. Monday, August 10th dials back a touch to 8ft, still with that long 11-second period, and the morning is glassy. The energy is still high at 1580. This is likely the best compromise for the experienced surfer in the second week – big, clean, and powerful.

The week continues with 8ft to 10ft swells from the south-southwest through Tuesday, August 11th, with clean winds. The energy stays high, between 1359 and 2054. It’s a solid run for the pros, but the crowds are often. By Wednesday, August 12th, the wind turns against us, and the quality drops off.

So, to sum it up: the first real standout is the Tuesday, August 4th and Wednesday, August 5th window. That’s your best bet for clean, manageable groundswell. The second week offers a lot of power, but it’s for the big-wave specialists only. If you’re not comfortable in 8ft to 11ft surf, stay home.

Rusty.

Short Range Forecast

Light rain (total 8mm), mostly falling on Fri afternoon. Warm (max 29°C on Wed morning, min 27°C on Tue night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 29°C on Sat morning, min 27°C on Fri night). Wind will be generally light.

Wednesday
29
Thursday
30
Friday
31
Saturday
1
Sunday
2
Monday
3
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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
SW
8
0.8
SW
8
0.8
SW
8
0.8
SW
8
0.6
SW
8
0.6
SW
8
0.6
SW
8
0.6
SW
8
0.6
SW
8
0.6
SW
8
0.5
SW
7
0.4
SW
7
0.6
SW
8
0.6
SW
7
0.6
SW
8
0.7
SW
8
0.6
E
16
0.8
E
16
1.2
E
16
Wave Graph
Metric surfscale
Energy kJ
84
78
77
75
50
53
51
48
41
37
27
19
35
33
36
55
185
321
705
Wind (km/h)
15
ENE
25
ENE
15
ENE
15
ENE
15
E
15
E
15
E
5
SSE
15
NW
10
E
10
E
10
NE
10
NE
20
E
20
E
5
E
10
SE
10
S
10
WNW
Wind State
cross
cross
cross
cross
cross
cross
cross
glassy
off
cross
cross
cross-off
cross-off
cross
cross-on
cross
cross-on
on
cross-off
High Tide
6:19AM1.20m
7:48PM0.55m
6:56AM1.22m
8:10PM0.58m
7:31AM1.20m
8:34PM0.61m
8:05AM1.16m
9:01PM0.66m
8:39AM1.09m
9:30PM0.72m
9:16AM0.99m
10:03PM0.79m
Low Tide
11:04PM0.43m
1:56PM0.12m
11:49PM0.40m
2:23PM0.12m
00:31AM0.37m
2:49PM0.14m
1:14AM0.35m
3:12PM0.17m
1:59AM0.35m
3:34PM0.21m
2:49AM0.36m
3:56PM0.26m
3:48AM0.37m
rain showers
part cloud
part cloud
part cloud
part cloud
rain showers
thunderstorm
thunderstorm
thunderstorm
part cloud
cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:28
5:28
5:28
5:28
5:28
5:30
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:38
6:37
6:37
6:37
6:37
6:36
6:36
 mm
1
1
1
1
4
Temp °C
28
29
29
28
29
29
28
29
28
28
29
29
28
29
29
28
29
29
28
Feels °C
31
30
30
31
32
31
32
35
33
32
33
32
30
31
30
31
32
33
32
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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 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.

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