Nanwan Beach (South Bay) Surf Break

Lat Long: 21.96° N 120.76° E

Nanwan Beach (South Bay) Surf Forecast and Surf Report

Issued: 1 am 12 Jul 2026 (local time)

Forecast update in  hr  min

Today's Nanwan Beach (South Bay) sea temperature is
30.0° C
0.9° 

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 12 Jul 2026:

  • Most powerful swell: Sunday 19 Jul, 8AM (local time) - 25ft (7.5m), 12s period, SSW swell with 14,437 kJ wave energy.

Best Forecast Surf Conditions for Nanwan Beach (South Bay) this week:

The most powerful waves expected at Nanwan Beach (South Bay) in the next 16 days are 7.5m 12s and forecast to arrive on Sunday (Jul 19) at 8AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 12s period and expected on Sunday (Jul 19) at 5AM.

Wave TypeTime (CST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 8AM (Sun 19th Jul)25ft (7.5m) 12s

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


Alright folks, Rusty here. Let’s have a look at what’s cooking for the next couple of weeks.

We’re starting off with a real rough patch. Honestly, from the 12th right through to the 21st, it’s pretty grim. The wind is all over the place, mostly cross or onshore, with a lot of stormy weather passing through. The swell is there, but it’s messy and the conditions are just plain poor. You’d be fighting a losing battle. There’s a solid 10 days there where you’re better off doing something else.

Now, the real story starts to change on the 22nd. That’s where things get interesting. The standout window is the morning of Wednesday, 22nd July. The sea state is clean, with a light cross-offshore breeze, and the swell is a solid 8ft from the southwest with a period of 10 seconds. That’s a proper groundswell with good energy (combined energy of 1655). This is going to be a treat for experienced surfers at Nanwan Beach (South Bay). The water temperature is sitting at 86°, which is about normal for this time of year, so no surprises there.

The afternoon of the 22nd is also worth a mention. The wind goes completely glassy, which is rare and special. It’s the same 8ft SW swell, a little less energy (1212), but perfectly clean. That’s a magic hour waiting to happen.

Looking further ahead, the morning of Thursday, 23rd July, also looks good. Another 8ft SW swell, with a clean cross-offshore breeze from the northeast. The energy is cranked up a bit (2380), so there’s some punch. That’s a solid second option for the experienced crew.

After that, the surf drops off a bit, and we get into some smaller, more marginal conditions through the 24th and 25th. The wind gets a bit messy again, and the swell backs off to around 7ft. Nothing to write home about.

Then there’s a bit of a glimmer right at the end of the forecast. On the morning of Monday, 27th July, we get a clean little 5ft swell from the southwest with a light cross-offshore breeze. It’s not big, but the conditions are clean, and the energy is low (415). That’s a nice little session for a cruiser board.

The real highlight, without a doubt, is the 22nd and 23rd. Get on it if you can handle the size.

Rusty.

Short Range Forecast

Heavy rain (total 99mm), heaviest during Sun night. Warm (max 29°C on Sun morning, min 28°C on Sun night). Winds increasing (light winds from the SE on Mon afternoon, fresh winds from the SSE by Mon night).

Days 4-6 Weather Summary

Heavy rain (total 113mm), heaviest during Wed morning. Warm (max 29°C on Wed morning, min 28°C on Wed morning). Mainly fresh winds.

Sunday
12
Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
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
0
0
0
0
0
0
0
1
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)
2.5
SW
8
2.5
SSW
8
2.4
SSW
9
2
SSW
9
2.5
SSW
10
3
SSW
9
3.5
SSW
10
4
SSW
10
4
SSW
10
3
SSW
10
2.5
SSW
9
2.5
SW
9
3
SW
9
2.5
SW
9
2.5
SW
8
2.5
SSW
8
2.5
SSW
8
2.3
SW
8
1.9
SW
9
4
S
9
5.5
SSW
11
Wave Graph
Metric surfscale
Energy kJ
958
869
948
643
1157
1361
2535
3536
2974
1817
1306
1107
1374
996
900
804
882
716
567
2300
6925
Wind (km/h)
25
SW
25
SW
20
S
20
ESE
20
SSE
35
S
30
S
30
S
30
SSW
25
SW
30
SW
25
SW
30
SW
25
WSW
20
SW
25
SSW
20
SSE
30
SSE
30
ESE
30
SE
30
SSE
Wind State
cross
cross-on
cross-on
cross-on
on
on
on
on
cross-on
cross-on
cross
cross
cross-on
cross
cross-on
cross-on
on
on
cross-on
cross-on
on
High Tide
6:34PM0.53m
5:08AM1.34m
7:23PM0.52m
6:01AM1.40m
8:03PM0.52m
6:53AM1.42m
8:40PM0.52m
7:43AM1.39m
9:15PM0.55m
8:31AM1.30m
9:51PM0.60m
9:17AM1.17m
10:28PM0.66m
Low Tide
12:10PM0.02m
9:41PM0.45m
1:03PM-0.05m
10:38PM0.43m
1:53PM-0.07m
11:34PM0.39m
2:39PM-0.05m
00:28AM0.36m
3:21PM0.01m
1:23AM0.35m
3:58PM0.09m
2:21AM0.36m
4:31PM0.18m
3:23AM0.39m
thunderstorm
thunderstorm
thunderstorm
mod rain
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:20
5:20
5:20
5:22
5:22
5:22
5:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:43
6:43
6:43
6:43
6:43
6:42
6:42
 mm
7
7
22
9
5
16
6
6
21
14
14
26
11
10
13
8
6
11
6
8
14
Temp °C
29
29
29
29
29
28
29
29
29
29
29
29
28
28
28
28
29
29
28
28
28
Feels °C
30
31
32
30
31
27
29
28
30
30
29
30
28
30
29
29
31
30
27
28
28
  • 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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