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 22 Jul 2026 (local time)

Forecast update in  hr  min

Today's Nanwan Beach (South Bay) sea temperature is
29.6° C
0.5° 

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 22 Jul 2026:

  • Best quality surf: Wednesday 29 Jul, 2AM (local time) - 13ft (4.0m), 9s period, SE swell with cross-offshore winds.
  • Most powerful swell: Saturday 25 Jul, 8PM (local time) - 13ft (4.0m), 10s period, S swell with 2,616 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 29 Jul, 2AM (local time) - 13ft (4.0m), 9s period with SE 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 Wednesday (Jul 29) at 2AM. The primary swell is predicted to be 4.0m 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 16 days are 4.0m 10s and forecast to arrive on Saturday (Jul 25) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 8s period and expected on Friday (Jul 24) at 11PM.

Wave TypeTime (CST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Wed 29th Jul)13ft (4.0m) 9s
Best Surf 2AM (Wed 29th Jul)13ft (4.0m) 9s
Most Powerful 8PM (Sat 25th Jul)13ft (4.0m) 10s

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


The Lowdown

Right, let’s have a look at what’s on offer for Nanwan Beach (South Bay). This is a beach and reef setup that’s fairly consistent and exposed to the south-east, so it needs a good alignment of swell and wind to fire.

Honestly, we’ve got a long, frustrating stretch ahead. The first proper swell of any size doesn’t show up until Saturday the 25th of July, with a 10-foot ESE swell, but the combined energy is a massive 1569 and it’s accompanied by a strong cross-shore wind and rain. That’s not for paddling – that’s a full-on mess. The waves are lumpy, the wind is howling, and conditions are poor. That trend continues through the weekend and into the start of the next week, with building swell but constant onshore or cross-shore winds. The water temperature is about average for this time of year.

Things get interesting on Wednesday the 29th of July. We’ve got a solid 11-foot swell coming from the SE, with a combined energy of 1892, and a gentle offshore wind from the west in the morning. That’s a clear standout. The swell is overhead and powerful, the wind is offshore, and the conditions are clean. This is a proper session for experienced surfers – the size is too much for beginners. The only catch is the tide and wind alignment is supposed to be favourable, but the sheer size might make it a handful. That afternoon the wind swings and it gets messy, so the window is that morning.

After that, the forecast drops back into a run of poor conditions with onshore winds and lumpy, choppy surf right through to the end of the first week of August. There’s a spike of long-period groundswell around the 4th and 5th of August, with a 4-foot 17-second swell from the east on Tuesday the 4th, but it’s got a fresh cross-shore wind and lumpy chop. That direction and period might wrap in, but the wind kills it. The following days bring bigger swells from the south-west, but they’re all blown out by strong onshore winds, making it a moot point for a clean surf.

To summarise: the entire 16-day window has only one real standout, and that’s the morning of Wednesday the 29th of July. For experienced surfers, that’s the one to circle. For everyone else, there’s a lot of waiting and watching. The break itself is fairly consistent, so it’s not that the area goes flat – it’s just that the wind is against us for most of the run.

Rusty.

Short Range Forecast

Heavy rain (total 89mm), heaviest during Sat morning. Warm (max 30°C on Thu afternoon, min 27°C on Thu night). Winds increasing (calm on Wed night, strong winds from the NE by Fri night).

Days 5-7 Weather Summary

Heavy rain (total 33mm), heaviest during Sat night. Warm (max 29°C on Mon afternoon, min 26°C on Sun afternoon). Winds increasing (light winds from the ENE on Sun afternoon, strong winds from the ENE by Tue morning).

Thursday
23
Friday
24
Saturday
25
Sunday
26
Monday
27
Tuesday
28
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
1
1
1
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)
0.6
SW
7
0.6
SW
7
0.6
WSW
7
0.4
SW
7
0.4
SW
7
0.3
SW
7
3.5
E
9
3
ESE
9
3.5
SSE
9
2.5
SSW
9
2.1
SW
9
1.5
SW
8
1.2
W
9
0.8
W
8
0.8
SW
8
1.7
E
6
2
ESE
7
2.3
ESE
8
4
SE
9
Wave Graph
Metric surfscale
Energy kJ
30
29
32
16
16
8
1705
1562
2133
1178
639
297
220
80
67
178
350
613
2504
Wind (km/h)
5
WNW
15
W
15
NW
20
ENE
15
NNE
30
NNE
50
NE
45
E
35
ESE
15
E
20
ENE
15
ENE
30
ENE
40
ENE
35
ENE
35
ENE
50
ENE
45
ENE
45
ENE
Wind State
cross-off
cross-off
off
cross
cross-off
cross-off
cross-off
cross
cross-on
cross-on
cross
cross
cross
cross
cross
cross-off
cross
cross
cross-off
High Tide
1:33AM0.92m
3:19PM0.48m
2:28AM0.96m
3:22AM1.01m
4:12AM1.07m
6:57PM0.52m
4:58AM1.12m
7:11PM0.53m
5:40AM1.17m
7:28PM0.54m
Low Tide
9:54AM0.38m
5:47PM0.47m
11:05AM0.30m
11:49AM0.23m
12:24PM0.18m
9:09PM0.50m
12:56PM0.14m
10:13PM0.47m
1:27PM0.12m
11:04PM0.43m
clear
clear
clear
thunderstorm
cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:24
5:24
5:26
5:26
5:26
5:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:40
6:40
6:39
6:39
6:38
6:38
6:38
 mm
1
3
20
52
13
16
3
5
1
2
2
1
3
9
Temp °C
29
29
30
29
29
30
29
28
28
28
28
27
27
28
29
28
29
29
28
Feels °C
33
34
33
33
30
31
27
26
27
29
30
28
29
27
28
27
26
26
25
  • 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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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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