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 13 Aug 2026 (local time)

Forecast update in  hr  min

Today's Nanwan Beach (South Bay) sea temperature is
29.1° 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 12 Aug 2026:

  • Best quality surf: Sunday 16 Aug, 2PM (local time) - 7ft (2.2m), 9s period, SW swell with cross-offshore winds.
  • Most powerful swell: Saturday 15 Aug, 11AM (local time) - 8ft (2.5m), 9s period, SSW swell with 947 kJ wave energy.
  • Next surfable swell (1★+): Sunday 16 Aug, 2PM (local time) - 7ft (2.2m), 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 Sunday (Aug 16) at 2PM. The primary swell is predicted to be 2.2m 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 2.5m 9s and forecast to arrive on Saturday (Aug 15) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Wednesday (Aug 19) at 8PM.

Wave TypeTime (CST) & Date Wave Height & Period
Next good surf (1 star+) 2PM (Sun 16th Aug)7ft (2.2m) 9s
Best Surf 2PM (Sun 16th Aug)7ft (2.2m) 9s
Most Powerful11AM (Sat 15th Aug)8ft (2.5m) 9s

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


The Lowdown

Alright folks, Rusty here, checkin' in with the long-range look for our local zone.

Right off the bat, we're hearing a bit of a mixed bag for the next week or so. The swell is coming, but it's gonna be a fight with the wind and a few storms passing through early on. The water temp is sittin' pretty average for the time of year, no major anomalies to write home about.

Our main focus is Nanwan Beach (South Bay). It's a beach and reef setup, pretty exposed to the swell, and it can get a bit busy often. The optimum direction is from the SE.

We kick things off on Thursday the 13th. There's some swell pushin' 6 feet from the SW with a period of 9 seconds, but the wind is kinda cross-off from the W at 16 mph. The wave energy is moderate (502), but the forecast is talkin' storms and the conditions are just on the edge of being surfable. It's a bit of a wait-and-see spot right now.

The next few days through Friday and Saturday the 14th and 15th are more of the same. The swell sticks around 5 feet to 8 feet, but the wind is a cross-shore mess from the WSW, and the rain is pouring. The wave energy is moderate (going up to 849), but the quality is poor. Not your typical fun waves.

Now, here's the first real standout. Sunday the 16th morning is lookin' promising. We've got a 8-foot swell from the SW, period of 9 seconds, and the wind drops to a gentle 9 mph from the W, making it a cross-off and clean. The wave energy is cookin' at 857. The forecast says to expect very good surf conditions. This is the best call of the first week. The afternoon is a bit more average with the turn in the wind.

Monday the 17th morning is another goodie. A 7-foot SW swell, a light breeze from the WNW, cross-off and clean. Wave energy is 656. This is another solid session if you can get out.

Then we hit a dry spell. From Tuesday the 18th all the way through to Sunday the 23rd, the wind is a problem. It's a mix of strong onshores, cross-shore winds, and some storms. The swell is still there, sometimes pushing 8 feet, but the conditions are just not lining up. There's a gap of about 5-6 days with no real recommendations. Kite surfers might get a look in during this stretch with the bigger swell and strong cross-shore winds, but for paddle surfing, it's a no-go.

Looking into the second week, things start to get interesting again. Monday the 24th afternoon shows a 6-foot SW swell, period 10 seconds, with a light NE breeze turning it cross-off. Wave energy is 785. It's a marginal call, but the solid wind direction is a good sign.

Now, the real standout of the whole forecast. Tuesday the 25th is the one to circle on the calendar. Morning and afternoon both have a 6-foot swell from the SW, but the period jumps to 11 seconds, which is a nice groundswell. The wind is light from the WNW at 6 mph, cross-off, clean as a whistle. The wave energy is up there, 1023 in the morning and a thumping 1312 in the afternoon. The forecast is calling for very good surf conditions both sessions. This is your best bet for a long, clean, and fun day.

Wednesday the 26th is still decent, with a 7-foot+ swell and a 11-second period, but the wind picks up a bit from the W to 12 mph, making it cross-off but bumpier. The energy is strong (1186-1614).

Then we get a big warning. Thursday the 27th is a beast. The morning is a no-go with a massive 16-foot swell from the S and onshore wind. The wave energy is off the charts at 7145, but it's all just a massive, messy, dangerous wall. The afternoon is a bit more manageable at 12 feet, but it's still a big swell. The wind is cross-shore, and the forecast says the swell is too big for this break. For experts only, and even then, be very careful.

Friday the 28th looks like the swell drops back to 6 feet, but the wind is messy again, so we're back to a poor outlook.

So, to wrap it up: the first week has a few bright spots on Sunday the 16th and Monday the 17th mornings, but the second week is where the real gem is on Tuesday the 25th. That's the one to get excited about, just keep an eye on the forecasts as we get closer.

Rusty out.

Short Range Forecast

Heavy rain (total 94mm), heaviest during Sat morning. Warm (max 29°C on Thu morning, min 27°C on Sat afternoon). Mainly fresh winds.

Days 4-6 Weather Summary

Heavy rain (total 32mm), heaviest during Sun morning. Warm (max 29°C on Tue morning, min 27°C on Mon night). Winds increasing (light winds from the NW on Mon night, fresh winds from the NE by Tue night).

Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
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
1
0
0
0
0
0
0
0
2
3
1
2
2
2
2
1
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)
1.8
SW
9
1.8
SW
9
1.6
SW
8
1.6
SW
8
2.3
SSW
8
1.6
SW
9
2.5
SSW
9
2.4
SSW
9
2.4
SW
9
2.3
SW
9
2.4
SW
9
2.3
SW
9
2.1
SW
9
1.9
SW
9
1.6
SW
9
1.6
SW
9
1.6
SW
9
1.5
SW
9
1.3
SW
9
1.4
SW
10
1.4
SW
10
Wave Graph
Metric surfscale
Energy kJ
528
465
346
330
748
351
947
864
926
790
890
808
673
573
388
406
415
373
272
363
334
Wind (km/h)
25
W
20
W
20
WSW
25
WSW
25
WSW
25
WSW
30
WSW
30
WSW
30
WSW
15
W
15
WSW
20
WSW
20
W
10
W
10
NW
10
NW
25
NNE
30
NE
35
NE
40
NE
30
NE
Wind State
cross-off
cross-off
cross
cross
cross
cross
cross
cross
cross
cross-off
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
7:59PM0.62m
7:33AM1.28m
8:26PM0.69m
8:15AM1.17m
8:55PM0.76m
8:55AM1.03m
9:26PM0.83m
9:33AM0.87m
9:58PM0.88m
10:10AM0.71m
10:34PM0.92m
10:51AM0.58m
11:17PM0.93m
Low Tide
2:10PM0.03m
00:41AM0.30m
2:39PM0.10m
1:33AM0.28m
3:05PM0.18m
2:26AM0.28m
3:25PM0.26m
3:20AM0.31m
3:40PM0.33m
4:21AM0.35m
3:48PM0.38m
5:35AM0.39m
3:49PM0.42m
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
mod rain
thunderstorm
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
rain showers
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:33
5:33
5:33
5:33
5:35
5:35
5:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:29
6:28
6:28
6:27
6:25
6:24
6:24
 mm
8
2
6
9
10
13
15
10
21
11
1
8
3
3
1
2
3
3
2
1
Temp °C
29
29
28
28
28
28
28
27
28
28
28
28
28
28
28
29
29
28
28
29
28
Feels °C
30
31
32
30
29
30
29
27
29
31
32
31
30
30
33
33
33
30
27
28
26
  • Map Icons:
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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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