Bali Bay (Glen Reef) Surf Break

Lat Long: 33.95° S 18.38° E

Bali Bay (Glen Reef) Surf Forecast and Surf Report

Issued: 1 am 05 Aug 2026 (local time)

Forecast update in  hr  min

Today's Bali Bay (Glen Reef) sea temperature is
14.2° C
1.2° 

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 5 Aug 2026:

  • Best quality surf: Thursday 6 Aug, 2AM (local time) - 11ft (3.5m), 13s period, WSW swell with cross-onshore winds.
  • Most powerful swell: Saturday 8 Aug, 11PM (local time) - 11ft (3.5m), 14s period, SW swell with 5,171 kJ wave energy.
  • Next surfable swell (1★+): Thursday 6 Aug, 2AM (local time) - 11ft (3.5m), 13s period with WSW 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 06) at 2AM. The primary swell is predicted to be 3.5m and 13s period. The wind is predicted to be cross-onshore as the swell arrives.

The most powerful waves expected at Bali Bay (Glen Reef) in the next 16 days are 3.5m 14s and forecast to arrive on Saturday (Aug 08) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Wednesday (Aug 05) at 11AM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Thu 6th Aug)11ft (3.5m) 13s
Best Surf 2AM (Thu 6th Aug)11ft (3.5m) 13s
Most Powerful11PM (Sat 8th Aug)11ft (3.5m) 14s

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


The Lowdown

G’day, Rusty here, and I’ve got the lowdown on Bali Bay (Glen Reef) for the next couple of weeks. It’s a reef break that’s very consistent and exposed to the swell, so it’s always in the mix. The water’s sitting at 58°, which is a bit colder than normal for this time of year—nothing too wild, but you’ll feel it.

The first real chance to get wet kicks off on Wednesday, August 5th, but honestly, it’s not looking great. Wednesday morning has a 7ft SW swell with a 16-second period—that’s proper long-period groundswell, which should wrap in nicely, but the wind is howling from the north at 19 mph, cross-off, so it’s messy. The combined energy is 2336, which is strong, but the conditions are marginal. Wednesday afternoon is worse: 8ft SW, 15-second period, cross-shore wind, and the energy jumps to 2459, but it’s lumpy and cross-chop. Not worth paddling out.

Thursday, August 6th, sees a big jump in size. Morning has 12ft of WSW swell, 13-second period, and a cross wind from the SSE at 9 mph. The energy is 3672—strong—but the swell is well over 8ft, so this is only for experienced surfers. The afternoon is similar, 12ft SW at 12 seconds, with a stronger cross wind at 16 mph, energy at 3459. It’s big, but it’s going to be a battle.

Now, Friday, August 7th morning is the standout. The swell eases to 10ft from the SW, but the period is 14 seconds, and the wind is light from the ESE at 3 mph, cross-off. The energy is 4062—very strong—but it’s clean. This is excellent for experienced surfers, but that size means it’s not for the faint-hearted. The afternoon is 12ft SW, 15-second period, with a light cross-on breeze, so it’s still good, but the morning is the pick.

Saturday, August 8th, the swell drops to 8ft from the SW, 13-second period, but the wind is cross-on and the conditions are choppy. Energy is 2376. Not great. Sunday, August 9th, is a write-off: 12ft to 15ft swell with a gale-force cross wind at 31 mph, energy up to 7830—this is more for kite surfers than paddle surfers.

Things settle down from Monday, August 10th, but the swell is small—7ft to 5ft—and the wind is strong offshore, so it’s clean but weak. The best run starts on Tuesday, August 11th, with a 5ft SSW swell, 12-second period, and light offshore wind. Energy is 921, which is moderate, but it’s clean. Wednesday, August 12th morning is the absolute gem: 5ft SW swell with an 18-second period—very long-period groundswell—and glassy conditions. Energy is 1573; this is going to be smooth, powerful, and perfect for the reef. Thursday, August 13th morning is also glassy, with 7ft WSW swell, 15-second period, energy at 1769—another beauty.

The second week sees a downward trend. Friday, August 14th through Saturday, August 15th, have 5ft to 5ft WSW swell, 12-second period, with light offshore winds. Clean but small. Sunday, August 16th, the swell drops to 3ft, and Monday, August 17th, is 5ft but with a shorter 9-second period, so less quality.

Tuesday, August 18th, the swell pumps back up to 12ft from the WSW, 12-13 seconds, with cross wind, energy over 3400—again, only for experienced surfers. Wednesday, August 19th, is similar. Then Thursday, August 20th, the biggest swell of the forecast hits: 18ft from the SW, 14-second period, with offshore wind, energy an insane 12310. This is massive, powerful, and dangerous—only for the hardcore experts.

Overall, the best on offer is the glassy morning of Wednesday, August 12th, and the glassy morning of Thursday, August 13th. Those are the clean, long-period groundswell sessions you want to circle. The Friday morning, August 7th, is also a standout for experienced surfers, but it’s a lot bigger. Keep an eye on the long-range forecast for Thursday, August 20th—it’s massive but promising, though less certain this far out.

Rusty.

Short Range Forecast

Moderate rain (total 11mm), heaviest on Wed night. Very mild (max 15°C on Wed afternoon, min 11°C on Thu night). Winds decreasing (fresh winds from the N on Wed night, calm by Fri afternoon).

Days 4-6 Weather Summary

Moderate rain (total 19mm), heaviest on Sat night. Very mild (max 15°C on Sat afternoon, min 9°C on Sat night). Winds increasing (calm on Sat night, strong winds from the SSE by Sun morning).

Wednesday
5
Thursday
6
Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
1
!
!
!
4
5
!
4
2
4
!
0
0
1
1
1
2
3
4
4
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
SW
16
2.3
SW
15
3.5
WSW
13
3.5
WSW
13
3.5
SW
12
3
SW
13
3
SW
14
3.5
SW
15
3
SW
14
2.5
SW
13
3
SW
14
4
SW
13
3.5
SW
13
4.5
SSW
11
2.1
SW
12
2.2
SSE
10
2.3
SSE
10
2
SSE
10
1.5
SSW
12
1.3
SSW
12
1.3
SW
20
Wave Graph
Metric surfscale
Energy kJ
2295
2326
4852
3672
3459
3267
4062
4815
3827
2376
3404
5133
3495
4651
1160
860
1032
717
634
435
1312
Wind (km/h)
30
N
30
NNW
15
WNW
15
SSE
25
SSE
20
SE
5
ESE
10
SSW
10
SSE
15
S
5
SSW
30
S
50
SSE
50
SSE
40
SE
40
SE
40
SE
30
SE
10
E
5
ESE
10
ESE
Wind State
cross-off
cross
cross-on
cross
cross
cross-off
cross-off
cross-on
cross
cross-on
cross-on
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
7:48PM1.55m
8:24AM1.33m
8:57PM1.47m
9:53AM1.28m
10:28PM1.43m
11:34AM1.33m
00:01AM1.47m
12:52PM1.45m
1:12AM1.56m
1:49PM1.60m
2:07AM1.66m
2:36PM1.73m
2:54AM1.73m
Low Tide
1:19PM0.59m
2:18AM0.62m
2:24PM0.69m
3:42AM0.67m
4:01PM0.74m
5:18AM0.64m
5:45PM0.70m
6:36AM0.56m
7:03PM0.59m
7:36AM0.45m
8:01PM0.46m
8:24AM0.35m
8:50PM0.36m
part cloud
clear
mod rain
light rain
cloud
clear
clear
clear
clear
clear
cloud
heavy rain
mod rain
part cloud
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:35
7:35
7:33
7:33
7:31
7:31
7:30
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:08
6:09
6:09
6:10
6:12
6:12
6:13
 mm
10
1
11
8
Temp °C
14
15
14
13
13
12
12
14
13
13
15
15
11
12
12
12
13
12
11
15
13
Feels °C
9
10
9
10
8
7
10
13
11
10
14
14
0
1
2
3
3
3
8
13
9
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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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