Bali Bay (Glen Reef) Surf Break

Lat Long: 33.95° S 18.38° E

Bali Bay (Glen Reef) Surf Forecast and Surf Report

Issued: 7 pm 17 Aug 2026 (local time)

Forecast update in  hr  min

Today's Bali Bay (Glen Reef) sea temperature is
13.2° C
2.4° 

Bali Bay (Glen Reef) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Bali Bay (Glen Reef) surf forecast from 17 Aug 2026:

  • Best quality surf: Thursday 20 Aug, 8AM (local time) - 11ft (3.5m), 13s period, SW swell with cross-shore winds.
  • Most powerful swell: Thursday 20 Aug, 8AM (local time) - 11ft (3.5m), 13s period, SW swell with 3,997 kJ wave energy.
  • Next surfable swell (1★+): Thursday 20 Aug, 8AM (local time) - 11ft (3.5m), 13s period with SW swell.

Best Forecast Surf Conditions for Bali Bay (Glen Reef) this week:

The surf forecast for Bali Bay (Glen Reef) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 20) at 8AM. The primary swell is predicted to be 3.5m and 13s period. The wind is predicted to be cross-shore as the swell arrives.

The most powerful waves expected at Bali Bay (Glen Reef) in the next 16 days are 3.5m 13s and forecast to arrive on Thursday (Aug 20) at 8AM. 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 6s period and expected on Tuesday (Aug 25) at 2AM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Thu 20th Aug)11ft (3.5m) 13s
Best Surf 8AM (Thu 20th Aug)11ft (3.5m) 13s
Most Powerful 8AM (Thu 20th Aug)11ft (3.5m) 13s

Table - best surf conditions forecast for Bali Bay (Glen Reef) over the next 16 days.


The Lowdown

Alright folks, Rusty here. Let's get into the surf for the next couple weeks.

The next fortnight is a bit of a mixed bag, so let's break it down. We've got a few windows of solid swell, but the wind is going to be the main factor in whether it's worth getting wet.

Starting this Tuesday the 18th, it's all a bit quiet. There's a 6.6ft WSW swell with a 12-second interval, but a SSE breeze is putting some chop on it, so it's not going to be clean. The wave energy is moderate at best. We see a jump in size to 9.8ft on Tuesday afternoon, but the wind picks up a bit, making it messier.

Wednesday the 19th is more of the same. Still a lumpy 8.2ft SW swell (1866) with a cross-onshore wind. Looks like a couple of days to sit on the beach, not much in the way of decent surf.

Now, here's where it gets interesting. Thursday the 20th morning. The swell jumps to a solid 11.5ft from the SW with a 13-second period. The wind is a gentle cross-shore from the SSE, which is workable. The energy is strong (3844). However, this one is flagged as too big for this break. It's going to be a heavy, powerful wall of water, so unless you're a top-tier surfer, this is one to skip. It'll be a sight to see though.

After that, the surf backs down. Friday the 21st has a smaller 6.9ft SW swell, but the cross-onshore wind kills it. Saturday the 22nd starts small and weak, but the afternoon sees a jump back to 9.8ft with a more favorable cross-offshore wind from the NNW, making for cleaner conditions. Might be worth a look late in the day.

Sunday the 23rd has a clean 8.2ft SW swell in the morning with light cross winds, but it's not a standout. Monday the 24th is smaller and weaker, not worth the effort.

Now, don't sleep on Tuesday the 25th. The swell gets a nice bump in period to 14 seconds, coming from the SW at 7.5ft in the morning. With a clean, moderate cross-offshore breeze from the SE, this is looking like proper groundswell that will have some push and shape. This is one of the better windows in the forecast.

The rest of the week is a bit patchy. Wednesday the 26th and Thursday the 27th see the swell drop in size and energy. Not terrible, but nothing to get excited about.

Here's the one to circle on the calendar: Friday the 28th of August. The long-range models are showing a significant pulse. We're talking a massive 13.1ft WSW swell with a very long 16-second period. The energy readings are off the charts (7724). This is a huge groundswell. However, the message is the same as the 20th – it's predicted to be too big for Bali Bay. The swell direction is good, but the sheer size and power will make it a dangerous, closed-out mess unless you know the spot perfectly. It's promising, but you have to be an expert.

Saturday the 29th gets blown out by a strong 25 mph SE cross-offshore wind. It'll be clean but howling, with a 9.8ft SW swell keeping the energy high.

Then we finally get the standout. Sunday the 30th of August. The wind drops right out, with a light SE cross-offshore breeze in the morning. We've still got that solid 9.8ft SW groundswell with a 14-second period. The energy is strong (3159). This is the best combination of size, period, and wind we've seen in the whole window. This is a proper day for experienced surfers. The lineup at Bali Bay (Glen Reef) will be firing. This is the one.

The last few days of the window fade out. Monday the 31st is a mix of moderate winds and an 8.2ft swell, but nothing special. Tuesday the 1st and Wednesday the 2nd of September drop off in size. The very last day, Wednesday the 2nd, shows a small 4.9ft WSW swell, but the wind goes completely glassy. It's the smallest day, but it could be the cleanest if you just want some fun little waves.

So there you have it. There's a few days to dodge, but keep your eyes on Thursday the 20th if you're after a challenge, and definitely don't miss Sunday the 30th – that's the pick of the bunch. Friday the 28th is a big one, but you'd better be on your A-game.

Stay stoked.

Short Range Forecast

Some drizzle, heaviest during Mon night. Very mild (max 15°C on Mon night, min 12°C on Tue night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 15°C on Fri afternoon, min 11°C on Thu night). Wind will be generally light.

Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
3
2
3
2
2
3
!
2
3
2
0
2
2
3
4
3
2
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.2
WSW
13
2
WSW
12
3
SW
13
3
SW
12
2.5
SW
12
2.4
SW
12
2.5
SW
12
3.5
SW
13
3
SW
12
2.5
SW
12
2.1
SW
11
1.4
WSW
11
1.3
WSW
11
1.2
SSW
11
3
SW
11
3
SW
13
2.5
SW
12
2
WSW
13
1.7
WSW
12
Wave Graph
Metric surfscale
Energy kJ
1648
1216
2596
2495
1866
1638
1848
3844
2589
1735
1126
466
359
323
2174
3185
2034
1338
780
Wind (km/h)
5
S
15
SSE
20
SSE
10
SSE
15
S
15
SSW
10
SSE
15
SSE
20
SSE
15
SSE
10
S
20
S
10
NW
25
N
15
NNW
5
SSE
10
SSE
15
SSE
15
SSE
Wind State
cross
cross
cross
cross
cross-on
cross-on
cross
cross
cross
cross-off
cross-on
cross-on
cross
cross-off
cross
cross
cross
cross
cross
High Tide
6:39AM1.44m
6:59PM1.51m
7:19AM1.32m
7:41PM1.38m
8:14AM1.22m
8:42PM1.27m
9:53AM1.16m
10:27PM1.21m
11:59AM1.20m
00:10AM1.25m
1:03PM1.31m
1:08AM1.34m
Low Tide
00:36AM0.54m
12:35PM0.59m
1:15AM0.65m
1:14PM0.71m
2:05AM0.76m
2:09PM0.83m
3:29AM0.83m
3:59PM0.91m
5:24AM0.82m
6:03PM0.88m
6:38AM0.74m
7:07PM0.78m
rain showers
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
part cloud
cloud
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:22
7:20
7:20
7:18
7:18
7:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:16
6:17
6:19
6:19
6:20
6:21
6:21
 mm
1
Temp °C
15
15
15
13
14
15
14
13
14
12
14
15
13
13
15
15
14
14
13
Feels °C
15
13
11
9
11
12
12
11
10
8
12
13
12
9
12
15
12
10
10
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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 Bali Bay (Glen Reef) Surf forecast

The above surf forecast table for Bali Bay (Glen Reef) provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Bali Bay (Glen Reef) can be found by selecting the local surf guide option on the grey menu. Our Bali Bay (Glen Reef) 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 (Bali Bay (Glen Reef)) 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 Bali Bay (Glen Reef) 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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