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 26 Aug 2026 (local time)

Forecast update in  hr  min

Today's Nanwan Beach (South Bay) sea temperature is
29.0°C
0.1° 

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 26 Aug 2026:

  • Best quality surf: Friday 28 Aug, 11PM (local time) - 7ft (2.2m), 9s period, SW swell with cross-offshore winds.
  • Most powerful swell: Tuesday 1 Sep, 2AM (local time) - 6ft (1.9m), 11s period, E swell with 878 kJ wave energy.
  • Next surfable swell (1★+): Friday 28 Aug, 8PM (local time) - 7ft (2.1m), 9s period with SW 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 Friday (Aug 28) at 8PM. The primary swell is predicted to be 2.1m and 9s 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 16 days are 1.9m 11s and forecast to arrive on Tuesday (Sep 01) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 10s period and expected on Wednesday (Sep 02) at 2PM.

Wave TypeTime (CST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Fri 28th Aug)7ft (2.1m) 9s
Best Surf11PM (Fri 28th Aug)7ft (2.2m) 9s
Most Powerful 2AM (Tue 1st Sep)6ft (1.9m) 11s

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


The Lowdown

Alright, Rusty here. Let's take a look at what Nanwan Beach has in store for us.

Well, it's a bit of a wait for the good stuff. The next week and a bit is pretty grim with a lot of poor surf or conditions that just aren't cooperating. The first real glimmer of hope doesn't pop up until the very end of August.

The water temperature here is a balmy 84°, which is bang on average for this time of year, so no surprises there.

The standout session for the whole outlook is the afternoon of Monday, the 31st of August. We've got a 5ft easterly swell, but here's the kicker – the wind will be light offshore from the northwest. That means the surface will be glassy and clean. The combined swell energy is strong at 1017, and the period is a long 11 seconds, suggesting some proper groundswell lines wrapping into the bay. This is your window if you can get out there. Keep in mind, Nanwan Beach is a beach and reef set up, and with that long period, expect the waves to have real shape, but it might close out a bit on the sandier sections. Also, crowds are often here, so don't expect to have it to yourself.

The morning of that same day, Monday the 31st, is also worth a paddle. You'll have a clean 5ft swell from the SW (energy at 563) and glassy conditions with a light cross-off breeze. It's a solid option, just not quite the standout that afternoon is.

Before that, the Saturday the 30th of August morning has some shoulder-high swell at 6ft and a period of 10 seconds, but the wind is a stiff cross-off from the NE at 19 mph, so it’ll be bumpy. It’s a pass.

Looking further out, the first week of September is a mixed bag. Tuesday the 1st of September afternoon looks promising with a clean 5ft SW swell and a light cross-off breeze, showing moderate energy at 771. The Wednesday morning after that is also clean with smaller 4ft waves. The rest of that week is blown out by fresh winds, despite the clean-looking heads. The surf really dies off after the 4th of September, dropping below 3ft with very weak energy (as low as 50), and the last week of the outlook is a flat, blown-out mess. There's really nothing to get excited about after the first couple of days of September.

So, if you’re keen, mark your calendar for the afternoon of August 31st. It's not a massive swell, but with those perfect winds, it should be the cleanest and most fun we’ll see in this whole stretch.

- Rusty

Short Range Forecast

Heavy rain (total 20mm), heaviest during Fri night. Warm (max 29°C on Wed afternoon, min 28°C on Wed morning). Winds decreasing (fresh winds from the W on Thu afternoon, light winds from the SW by Fri night).

Days 4-6 Weather Summary

Light rain (total 3mm), mostly falling on Sat night. Warm (max 29°C on Sat morning, min 27°C on Sun night). Winds increasing (light winds from the SW on Sat morning, fresh winds from the ENE by Sun morning).

Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
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
0
0
0
0
0
0
1
2
2
2
0
0
1
1
2
2
2
2
2
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.8
SW
9
2.1
SW
9
2.1
SW
9
2.2
SW
8
2.1
SW
8
2.1
SW
8
2.1
SW
8
2.1
SW
9
2.4
SW
9
2.1
SSW
9
2.1
SW
9
1.9
SW
9
1.9
SW
10
1.9
SW
10
1.8
SW
10
1.5
SW
9
1.7
E
12
1.9
E
11
1.4
SW
9
1.4
SW
10
1.4
SW
10
Wave Graph
Metric surfscale
Energy kJ
481
645
631
650
569
623
625
616
865
691
703
587
754
725
585
382
773
878
307
341
392
Wind (km/h)
20
W
25
W
30
W
35
W
30
W
35
W
25
W
25
WNW
5
SW
10
SW
10
ESE
30
NE
35
ENE
25
NE
25
NE
20
NE
20
NE
20
NE
5
NNE
0
NW
10
ENE
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross-on
cross-off
cross
cross-off
cross-off
cross-off
cross-off
cross-off
glassy
glassy
cross
High Tide
6:49PM0.59m
6:02AM1.17m
7:06PM0.64m
6:38AM1.18m
7:26PM0.70m
7:13AM1.14m
7:49PM0.76m
7:48AM1.08m
8:14PM0.84m
8:25AM0.98m
8:42PM0.91m
9:04AM0.86m
9:15PM0.97m
Low Tide
12:55PM0.14m
11:07PM0.40m
1:18PM0.14m
11:51PM0.35m
1:39PM0.15m
00:35AM0.30m
2:00PM0.18m
1:18AM0.26m
2:19PM0.22m
2:05AM0.24m
2:38PM0.27m
2:55AM0.24m
2:56PM0.32m
3:54AM0.26m
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
part cloud
thunderstorm
part cloud
part cloud
thunderstorm
clear
clear
thunderstorm
clear
clear
clear
clear
clear
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:37
5:37
5:37
5:39
5:39
5:39
5:39
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:19
6:17
6:16
6:15
6:15
6:14
6:13
 mm
4
1
4
1
1
6
3
2
1
1
Temp °C
28
29
28
28
28
28
28
29
28
29
29
28
29
29
28
29
29
28
29
29
28
Feels °C
30
30
30
28
27
29
29
30
32
33
33
30
28
28
28
29
30
29
33
34
33
  • 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