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 08 Aug 2026 (local time)

Forecast update in  hr  min

Today's Nanwan Beach (South Bay) sea temperature is
29.6° C
0.6° 

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 8 Aug 2026:

  • Best quality surf: Monday 10 Aug, 8AM (local time) - 11ft (3.5m), 10s period, SW swell with cross-offshore winds.
  • Most powerful swell: Monday 10 Aug, 5AM (local time) - 13ft (4.0m), 10s period, SW swell with 2,777 kJ wave energy.
  • Next surfable swell (1★+): Monday 10 Aug, 8AM (local time) - 11ft (3.5m), 10s 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 Monday (Aug 10) at 8AM. The primary swell is predicted to be 3.5m and 10s 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 4.0m 10s and forecast to arrive on Monday (Aug 10) at 5AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 13s period and expected on Saturday (Aug 08) at 11PM.

Wave TypeTime (CST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Mon 10th Aug)11ft (3.5m) 10s
Best Surf 8AM (Mon 10th Aug)11ft (3.5m) 10s
Most Powerful 5AM (Mon 10th Aug)13ft (4.0m) 10s

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


The Lowdown

Alright, let’s be straight with you. The next couple of weeks are going to be a bit of a grind for clean, make-you-wanna-scream waves. There’s plenty of size early on, but the wind is just going to be a pain in the arse for a while. We’ve got a long gap at the start with nothing worth paddling out for, so be patient.

The first real window of opportunity shows up on Saturday the 15th. After days of onshore junk and fresh breezes, the wind finally drops right out to a light breeze from the west. The swell is still solid, around 6ft, coming from the SSW. It’s not huge, but it’s clean. Nanwan Beach (South Bay) is the spot. This is a beach and reef setup, and with that light wind, it’s going to be your best chance to get a few without battling the chop. The water temp is sitting at 85°, which is pretty much normal for this time of year, so the warm water is a bonus.

Sunday the 16th morning holds some promise too. Still light winds, this time from the WNW, and a similar 6ft SSW swell. The energy is moderate. It’s worth a look before the wind starts to move around again.

Then we get a bit of a tease. Monday the 17th morning has light wind again and a 6ft SW swell, but the wind is cross, which will put a bit of a bump on it. Afternoon gets messier. The real standout, though, is Tuesday the 18th afternoon. The wind goes glassy, absolutely dead. The swell is 6ft from the SW. That’s the cleanest the surf is going to be all week. It won’t be pumping, but it’ll be smooth and rideable, a proper glass-off session.

After that, the wind swings around to the east and picks up, and the swell starts to fade. The last week of the forecast is pretty grim. The swell drops below 5ft and onshore winds take over. The 23rd shows a little bump in energy, but it’s all onshore and junky. It’s looking like a blank run to end the period.

So, to keep it simple: the best on offer is Saturday the 15th and Tuesday the 18th afternoon. The rest is a waiting game.

Rusty

Short Range Forecast

Heavy rain (total 36mm), heaviest during Sun night. Warm (max 30°C on Sat night, min 28°C on Mon night). Winds decreasing (strong winds from the WNW on Sat night, moderate winds from the WSW by Tue morning).

Days 5-7 Weather Summary

Heavy rain (total 30mm), heaviest during Fri morning. Warm (max 29°C on Tue night, min 28°C on Tue night). Mainly fresh winds.

Sunday
9
Monday
10
Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
1
1
0
0
1
1
0
0
0
1
2
1
1
1
0
1
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)
2.4
SW
9
3
SW
9
3
SW
9
3.5
SW
10
3.5
SW
10
3
SW
9
3
SW
10
2.4
SW
9
2.3
SW
9
2.2
SW
10
2.2
SW
9
2.1
SW
9
2
SW
9
2.1
SW
9
2.1
SW
9
1.9
SW
9
2.1
SW
9
2.1
SW
9
2
SW
9
Wave Graph
Metric surfscale
Energy kJ
926
1411
1469
2498
2018
1569
1624
994
826
895
770
767
654
654
683
586
688
727
649
Wind (km/h)
40
W
45
W
45
W
45
SW
35
WSW
35
W
30
WSW
30
WSW
25
WSW
30
WSW
30
W
25
W
25
W
30
W
30
W
30
WSW
25
W
25
WSW
15
WSW
Wind State
cross-off
cross-off
cross-off
cross
cross
cross-off
cross
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-off
cross
cross
High Tide
2:58AM1.15m
6:13PM0.51m
4:05AM1.24m
6:39PM0.52m
5:05AM1.31m
7:05PM0.54m
5:59AM1.35m
7:32PM0.57m
6:48AM1.35m
7:59PM0.62m
7:33AM1.28m
8:26PM0.69m
Low Tide
11:21AM0.09m
8:02PM0.49m
12:12PM0.02m
9:36PM0.46m
12:56PM-0.02m
10:47PM0.40m
1:35PM-0.01m
11:46PM0.34m
2:10PM0.03m
00:41AM0.30m
2:39PM0.10m
1:33AM0.28m
rain showers
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
part cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
mod rain
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:31
5:31
5:33
5:33
5:33
5:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:32
6:31
6:30
6:30
6:30
6:29
6:28
 mm
1
2
2
11
4
1
8
4
3
7
1
2
4
8
8
17
Temp °C
30
30
30
29
29
30
29
29
29
29
29
29
29
29
29
29
29
29
28
Feels °C
27
28
28
28
29
30
30
31
30
31
30
30
32
30
30
31
31
29
31
  • 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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