
Surf Forecasts:
Bali Bay (Glen Reef) surf forecast from 11 Aug 2026:
- Best quality surf: Thursday 13 Aug, 5AM (local time) - 5ft (1.6m), 19s period, SW swell with cross-offshore winds.
- Most powerful swell: Thursday 13 Aug, 11AM (local time) - 8ft (2.4m), 17s period, SW swell with 3,307 kJ wave energy.
- Next surfable swell (1★+): Tuesday 11 Aug, 5PM (local time) - 4.5ft (1.3m), 12s period with SSW 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 Tuesday (Aug 11) at 5PM. The primary swell is predicted to be 1.3m and 12s period with a secondary swell of 0.6m and 24s. Another secondary swell of 1.4m and 8s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Bali Bay (Glen Reef) in the next 16 days are 2.4m 17s and forecast to arrive on Thursday (Aug 13) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 10s period and expected on Thursday (Aug 13) at 11PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Tue 11th Aug) | 4.5ft (1.3m) 12s |
| Best Surf | 5AM (Thu 13th Aug) | 5ft (1.6m) 19s |
| Most Powerful | 11AM (Thu 13th Aug) | 8ft (2.4m) 17s |
Table - best surf conditions forecast for Bali Bay (Glen Reef) over the next 16 days.
The Lowdown
Alright, Rusty here, let’s get into it.
We’ve got a solid run of surf kicking off Tuesday, August 11th, and it’s looking like a great stretch for the experienced crew at Bali Bay (Glen Reef). The water is sitting at 56°, which is a solid 4° cooler than usual for this time of year – a bit of a chill on the skin, so don’t forget that spring suit. The overall energy is pumping, with some serious swell numbers coming through.
Tuesday morning serves up a clean 7ft swell from the south, with a 12-second period. The cross-off wind from the ESE at 6 mph is keeping things tidy. The combined energy is strong (1848). That’s a proper wave for intermediate to advanced surfers. Tuesday afternoon drops a little to 4ft from the SSW, but still clean and fun.
Wednesday, August 12th, is where it really starts to fire. Morning brings a 6ft SW groundswell with a long 18-second period and perfect offshore wind from the east at 6 mph. The energy jumps to 2398 – that’s a lot of push. This is a standout session. The longer period means the reef will handle it beautifully, but expect longer lulls between sets. The afternoon stays similar with 6ft SW swell and 17-second period, just a touch lighter wind.
Thursday, August 13th, is the pick of the entire outlook. Morning sees 8ft of SW groundswell, 17-second period, and a clean cross-off breeze from the NNE at 9 mph. The energy is a massive 3553. That’s proper, powerful, long-period groundswell. This is a day for the experienced surfer, no question. The afternoon is still good, but the wind swings cross-shore, so the morning is the call.
Friday, August 14th, the swell backs off a touch to 6ft from the WSW, but still with a solid 15-second period. The morning stays clean with a cross-off breeze. The energy is still strong (1583). The afternoon gets a bit messy with the cross-shore wind.
Saturday, August 15th, is a hidden gem. Morning is glassy – that’s right, flat calm, with 6ft of WSW swell and a 14-second period. That’s a magic window for a reef break. The energy is moderate to strong (1182). The afternoon gets a light cross-on breeze, so the morning is the time.
Sunday, August 16th, the wind gets a bit tricky, with cross and cross-on conditions all day. The swell holds around 6ft to 7ft from the WSW, but the quality drops. Still worth a look if you’re keen, but the magic is gone.
Monday, August 17th, the swell pushes back up to 8ft from the WSW, but the wind is shifting, and the energy is high (2057). The morning has a cross-shore breeze, making it a bit bumpy.
Tuesday, August 18th, the swell gets big – 10ft from the SW, with a 12-second period. That’s expert territory. The morning has a clean cross-off wind from the NNW, but the afternoon turns to light rain and a cross-on wind. The energy is strong (2624). This is a beast of a day, only for the very skilled.
From Wednesday, August 19th, through to the end of the outlook, the quality drops. The swell stays in the 4ft to 8ft range, but the wind is inconsistent, with a lot of cross and cross-on conditions. The energy levels are moderate to strong at times, but it’s not the clean, groomed surf of the first week. There’s a highlight on Saturday, August 22nd afternoon, with a 8ft SW swell and a 14-second period, plus a gentler cross-shore breeze and a massive energy of 5057. That’s a lot of water moving, but it’s a bit sloppy. Then on Sunday, August 23rd, we get another glassy morning with 7ft from the WSW and a 13-second period – that’s a clean, solid option for the end of the run.
The best surf is hands down Thursday, August 13th morning, with that 8ft SW groundswell, 17-second period, and clean cross-off wind. The second standout is Wednesday, August 12th morning, with the 6ft SW groundswell and offshore wind. Those are the days to clear the schedule.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Thu afternoon, min 11°C on Tue morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Fri morning, min 13°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | S 12 | SSW 12 | SW 21 | SW 18 | SW 17 | WSW 16 | SW 17 | SW 16 | WSW 16 | WSW 15 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | WSW 12 |
Wave Graph | |||||||||||||||||||||
1312 | 483 | 1850 | 2223 | 2238 | 1809 | 3307 | 2379 | 1908 | 1505 | 1257 | 1208 | 1161 | 1043 | 1179 | 1138 | 1633 | 2310 | 2057 | 1649 | 890 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off | glassy | cross-on | glassy | cross | cross-on | glassy | cross | cross-on | cross |
High Tide | 2:36PM1.73m | 2:54AM1.73m | 3:18PM1.83m | 3:36AM1.77m | 3:58PM1.88m | 4:15AM1.77m | 4:35PM1.88m | 4:52AM1.72m | 5:11PM1.83m | 5:27AM1.65m | 5:47PM1.75m | 6:03AM1.55m | 6:22PM1.64m | ||||||||
Low Tide | 8:24AM0.35m | 8:50PM0.36m | 9:06AM0.27m | 9:33PM0.28m | 9:45AM0.24m | 10:13PM0.26m | 10:21AM0.25m | 10:50PM0.28m | 10:56AM0.29m | 11:26PM0.34m | 11:29AM0.37m | 00:00AM0.43m | 12:02PM0.47m | 00:36AM0.54m | |||||||
7:30 | — | — | 7:28 | — | — | 7:28 | — | — | 7:26 | — | — | 7:26 | — | — | 7:24 | — | — | 7:22 | — | — | |
— | 6:13 | — | — | 6:14 | — | — | 6:14 | — | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 12 | 17 | 16 | 16 | 21 | 21 | 21 | 25 | 21 | 19 | 17 | 15 | 15 | 17 | 15 | 15 | 17 | 15 | 15 | 17 | 16 |
Feels °C | 9 | 14 | 13 | 13 | 19 | 17 | 17 | 21 | 18 | 15 | 14 | 14 | 14 | 15 | 13 | 14 | 17 | 14 | 13 | 15 | 16 |
Swell 1 Height (m) Direction Period (s) | S 12 | SSW 12 | SW 21 | SW 18 | SW 17 | WSW 16 | SW 17 | SW 16 | WSW 16 | WSW 15 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | WSW 12 |
1312 | 483 | 1850 | 2223 | 2238 | 1809 | 3307 | 2379 | 1908 | 1505 | 1257 | 1208 | 1161 | 1043 | 1179 | 1138 | 1633 | 2310 | 2057 | 1649 | 890 | |
Swell 2 Height (m) Direction Period (s) | WSW 10 | WSW 24 | SSE 9 | SE 8 | SSE 8 | SW 21 | SE 11 | SE 10 | ESE 10 | SE 11 | SE 11 | W 5 | W 5 | W 5 | — | — | — | — | — | — | WSW 8 |
20 | 381 | 202 | 69 | 40 | 1418 | 246 | 90 | 80 | 57 | 32 | 20 | 21 | 14 | — | — | — | — | — | — | 223 | |
Swell 3 Height (m) Direction Period (s) | SW 26 | WSW 10 | SSW 11 | SW 10 | SW 10 | S 10 | — | NNW 7 | — | — | — | ESE 11 | — | — | — | — | — | — | — | — | — |
27 | 20 | 211 | 106 | 65 | 8 | — | 17 | — | — | — | 13 | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SE 8 | SSE 8 | SE 8 | — | — | SE 7 | — | — | — | NNW 4 | NW 4 | — | — | — | — | — | — | — | — | — | — |
489 | 236 | 493 | — | — | 54 | — | — | — | 21 | 14 | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 6 | 0 | 7 | 0 | 0 | 11 | 0 | 0 | 4 | 0 | 9 | 4 | 0 | 11 | 11 | 11 |
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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.











