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 11 Aug 2026 (local time)

Forecast update in  hr  min

Today's Nanwan Beach (South Bay) sea temperature is
29.2° C
0.2° 

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 11 Aug 2026:

  • Best quality surf: Monday 17 Aug, 11AM (local time) - 7ft (2.1m), 9s period, SW swell with cross-offshore winds.
  • Most powerful swell: Sunday 16 Aug, 5AM (local time) - 8ft (2.4m), 9s period, SW swell with 870 kJ wave energy.
  • Next surfable swell (1★+): Monday 17 Aug, 11AM (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 Monday (Aug 17) at 11AM. 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 2.4m 9s and forecast to arrive on Sunday (Aug 16) 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 0.6m 12s period and expected on Wednesday (Aug 12) at 2AM.

Wave TypeTime (CST) & Date Wave Height & Period
Next good surf (1 star+)11AM (Mon 17th Aug)7ft (2.1m) 9s
Best Surf11AM (Mon 17th Aug)7ft (2.1m) 9s
Most Powerful 5AM (Sun 16th Aug)8ft (2.4m) 9s

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


The Lowdown

Alright, this is Rusty, your local surf check for Nanwan Beach (South Bay). Let’s have a good look at the charts for the next couple of weeks.

First up, the water temp is sitting about average for this time of year, nothing unusual there.

Honestly, it’s gonna be a bit of a waiting game. The start of this run isn’t offering much to get excited about. We’ve got a reasonable amount of swell in the water, mostly from the SW around 7ft to 6ft, but the wind is the problem. A fresh cross-offshore breeze from the W is keeping things clean in the morning, but the overall quality is being marked down as marginal. The combined wave energy is moderate (around 540 to 762). It’s surfable, but it’s not what you’d call good. Thursday and Friday look poor, with the wind shifting cross-shore or onshore, creating chop. The swell drops a bit too, down to 5ft and 4ft.

The first real standout window is Monday the 17th of August. The morning looks promising. We’ve got SW swell at 7ft with a 9-second period. The wind drops to a gentle 9 mph from the west, staying cross-offshore. That means clean conditions, so the break should be nicely lined up. Wave energy is moderate at 668, and the overall vibe is “very good surf conditions.” This is the pick of the first week. Because it’s fairly consistent here and crowds are often around, you’ll want to be on it early. The swell direction from the SW is a good match for the SE optimum here, so it should wrap in nicely.

By Tuesday the 18th, the swell backs off to 5ft to 5ft, but we get a moment of flat calm, glassy conditions in the afternoon. That’s a beautiful thing, but the surf will be small and gutless.

The second half of the calendar is a bit of a drought. From Wednesday the 19th right through to the end of the period on the 27th, the wind turns onshore from the ENE and ESE, blowing across the break. The swell hangs around in the 4ft to 7ft range, and the energy builds back up to moderate levels (up to 962), but the onshore chop ruins it. It’s just a write-off for clean, rideable waves. Late in the period, around the 24th and 25th, we get a bit more SW swell at 6ft to 7ft with a 10-second period, and the wind does go cross-offshore again, but the guidance still calls it marginal. Not a stand-out.

So, if you’re a paddler, your best bet is Monday morning, August 17th. Go get it. For the rest, it looks more interesting for a kite session than a surfboard on those bumpy afternoons.

Rusty.

Short Range Forecast

Heavy rain (total 38mm), heaviest during Fri morning. Warm (max 29°C on Wed morning, min 28°C on Tue night). Mainly fresh winds.

Days 5-7 Weather Summary

Heavy rain (total 68mm), heaviest during Sun morning. Warm (max 29°C on Sat morning, min 27°C on Sun night). Wind will be generally light.

Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
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
1
0
1
0
0
1
0
2
1
1
2
0
1
3
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)
2.1
SW
9
2.1
SW
9
2.1
SW
9
1.8
SW
9
1.8
SW
9
1.8
SW
9
1.8
SW
9
1.9
SW
8
1.4
SSW
9
1.9
SW
8
2.3
SW
8
2.2
SW
8
2.3
SW
9
2.1
SW
9
2
SW
9
1.9
SW
9
2.1
SW
9
1.9
SW
9
1.5
SW
9
Wave Graph
Metric surfscale
Energy kJ
760
727
660
540
525
513
454
479
318
467
737
687
787
664
580
573
657
525
326
Wind (km/h)
25
WSW
30
W
25
W
25
W
30
W
25
W
30
WSW
25
W
25
WSW
20
WSW
20
W
25
WSW
20
WSW
20
WSW
20
WSW
20
W
15
W
10
WNW
10
SSW
Wind State
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-off
cross-off
cross
cross-off
cross
cross
cross-off
cross
cross-off
cross-off
cross-off
cross-on
High Tide
5:59AM1.35m
7:32PM0.57m
6:48AM1.35m
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
Low Tide
10:47PM0.40m
1:35PM-0.01m
11:46PM0.34m
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
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
mod rain
thunderstorm
thunderstorm
thunderstorm
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
5:33
5:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:30
6:30
6:29
6:28
6:28
6:27
6:25
 mm
6
4
1
3
3
8
7
6
13
9
4
12
15
4
6
4
1
4
Temp °C
28
29
29
29
29
29
28
29
29
28
29
28
28
28
28
28
29
29
29
Feels °C
31
30
30
33
30
30
31
31
31
31
31
29
30
31
29
31
33
32
35
  • 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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