
Surf Forecasts:
Bali Bay (Glen Reef) surf forecast from 11 Sep 2026:
- Best quality surf: Sunday 13 Sep, 5AM (local time) - 7.5ft (2.3m), 15s period, SW swell with cross-offshore winds.
- Most powerful swell: Tuesday 15 Sep, 11PM (local time) - 10ft (3.0m), 16s period, WSW swell with 4,489 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 2AM (local time) - 7.5ft (2.3m), 15s 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 Sunday (Sep 13) at 2AM. The primary swell is predicted to be 2.3m and 15s period with a secondary swell of 1.5m and 8s. 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 3.0m 16s and forecast to arrive on Tuesday (Sep 15) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.2m 7s period and expected on Monday (Sep 14) at 11AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Sun 13th Sep) | 7.5ft (2.3m) 15s |
| Best Surf | 5AM (Sun 13th Sep) | 7.5ft (2.3m) 15s |
| Most Powerful | 11PM (Tue 15th Sep) | 10ft (3.0m) 16s |
Table - best surf conditions forecast for Bali Bay (Glen Reef) over the next 16 days.
The Lowdown
G'day, Rusty here, checking in on the Bali Bay (Glen Reef) scene. Let's get into it.
Alright, things start a bit rough. The first few days, Friday the 11th through the weekend, are pretty average. Friday morning is onshore and messy with a 6ft WSW swell, but the wind is a cross-shore mess at 16 mph. Friday arvo gets even bigger and windier, not worth paddling out. Saturday's a bit better with a clean 7ft SW swell in the morning, and moderate cross-offshore breeze. The real standout early on is Sunday the 13th morning. That's the session. We've got a clean 7ft SW groundswell at 14 seconds—long period, good energy—with a light 6 mph cross-offshore ESE wind. The combined energy is pumping (2236), and it's excellent for those who know what they're doing. Bali Bay handles a big SW swell, but at 7ft, it's a proper reef break; beginners might want to sit this one out. Water temps are pretty standard for this time of year, nothing unusual to report.
Monday the 14th drops off a cliff with a tiny, weak swell. We get a clean but small pulse on the 14th morning at 4ft, but it's not enough to get excited about. The wind goes north-west and gets strong, ruining things. Tuesday the 15th stays messy with strong cross-breezes. Wednesday the 16th is clean again with a 6ft SW swell, but the wind is a fresh 19 mph cross-offshore, so it's bumpy. Thursday the 17th is a write-off.
Now, here's the real highlight. Friday the 18th morning is an absolute beauty. The wind drops to virtually nothing—a flat calm glassy 3 mph—and the swell is a solid 7ft from the SW at 13 seconds. That's clean, powerful, and the combined energy reads 1908. This is the best on offer for the entire outlook: a true morning for the experienced surfer to score. Saturday the 19th stays clean with moderate energy, but not quite the same magic.
After that, the second week gets a bit drifty. Sunday the 20th through Tuesday the 23rd of September sees dropping energy and increasing onshore winds. There's a small, clean 3ft swell on Wednesday the 23rd morning, but it's weak (423 combined energy). The real solid pulse comes back Thursday the 24th morning with a clean 7ft SW groundswell at 14 seconds and a light breeze (1782 energy)—another good one for the experienced crew. And then Friday the 25th morning repeats the magic of the previous Friday: glassy conditions with a 6ft SW swell at 13 seconds. Saturday morning the 26th is a write-off with strong north winds.
Overall, the standouts are Sunday the 13th morning, Friday the 18th morning, Thursday the 24th morning, and Friday the 25th morning—all offering clean, powerful, long-period SW groundswell for those who can handle it. If you're not an expert, those 7ft plus days at this reef are going to be a handful.
Signing off,
Rusty
Short Range ForecastMostly dry. Warm (max 23°C on Sun afternoon, min 14°C on Thu night). Winds decreasing (fresh winds from the SSE on Fri afternoon, light winds from the SE by Sun morning). | Days 5-7 Weather SummaryHeavy rain (total 20mm), heaviest during Tue night. Very mild (max 18°C on Sun night, min 13°C on Tue night). Mainly fresh winds. | ||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | ||||||||||||||
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) | WSW 13 | WSW 12 | WSW 12 | SSE 7 | SW 15 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 12 | NW 8 | NW 8 | WNW 7 | SW 16 | WSW 15 | SW 14 | SW 13 | SW 12 |
Wave Graph | |||||||||||||||||||
1207 | 967 | 686 | 432 | 1647 | 3233 | 2341 | 1550 | 1029 | 600 | 380 | 810 | 300 | 285 | 1523 | 4407 | 1363 | 1346 | 730 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-on | cross-off | cross-off | cross | cross-off | cross | cross | cross | cross-off | cross | cross |
High Tide | 3:17AM1.77m | 3:33PM1.89m | 3:51AM1.77m | 4:05PM1.88m | 4:23AM1.74m | 4:37PM1.83m | 4:54AM1.67m | 5:08PM1.74m | 5:25AM1.58m | 5:38PM1.62m | 5:57AM1.48m | 6:09PM1.50m | |||||||
Low Tide | 9:14PM0.25m | 9:22AM0.26m | 9:48PM0.24m | 9:53AM0.27m | 10:19PM0.26m | 10:23AM0.31m | 10:48PM0.33m | 10:52AM0.38m | 11:17PM0.41m | 11:21AM0.48m | 11:46PM0.52m | 11:50AM0.60m | 00:18AM0.63m | ||||||
— | 6:52 | — | — | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — | 6:46 | — | — | 6:45 | — | — | |
6:34 | — | 6:34 | — | — | 6:35 | — | — | 6:36 | — | — | 6:36 | — | — | 6:37 | — | — | 6:37 | — | |
mm | — | — | — | — | — | — | — | — | — | 7 | 1 | — | 4 | 1 | — | 7 | — | — | — |
Temp °C | 16 | 15 | 16 | 15 | 17 | 19 | 17 | 21 | 23 | 18 | 16 | 16 | 15 | 15 | 16 | 15 | 14 | 15 | 13 |
Feels °C | 14 | 11 | 12 | 10 | 13 | 16 | 15 | 20 | 22 | 16 | 10 | 11 | 11 | 12 | 10 | 10 | 7 | 8 | 7 |
Swell 1 Height (m) Direction Period (s) | WSW 13 | WSW 12 | WSW 12 | WSW 11 | SW 15 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 12 | SW 12 | NW 8 | SW 11 | SW 16 | WSW 15 | SW 14 | SW 13 | SW 12 |
1207 | 967 | 669 | 393 | 1647 | 3233 | 2341 | 1550 | 1029 | 600 | 380 | 272 | 227 | 177 | 1523 | 4407 | 1363 | 1346 | 730 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | SW 14 | — | — | — | SSE 8 | SSE 8 | SSE 8 | SE 8 | SE 9 | SW 11 | SW 18 | WSW 8 | WSW 9 | WSW 14 | WSW 13 | W 13 |
— | — | — | 248 | — | — | — | 163 | 165 | 45 | 15 | 3 | 245 | 266 | 179 | 449 | 514 | 690 | 408 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | SSW 10 | — | — | — | — | — | — | SE 11 | SE 13 | SE 13 | SW 15 | SE 13 | — | NNW 6 | — | — |
— | — | — | 33 | — | — | — | — | — | — | 33 | 7 | 7 | 139 | 7 | — | 4 | — | — | |
Wind waves Height (m) Direction Period (s) | S 6 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 8 | SSE 8 | SE 8 | SE 8 | NNW 5 | NNW 7 | NW 8 | NW 8 | WNW 7 | NW 7 | — | SW 9 | SSE 6 | SSE 7 |
170 | 444 | 686 | 432 | 356 | 645 | 277 | 523 | 555 | 62 | 458 | 810 | 300 | 285 | 226 | — | 805 | 329 | 163 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 19 | 4 | 406 | 4 | 4 | 4 | 0 | 0 | 4 | 17 | 181 | 81 | 30 | 190 | 234 | 13 | 19 | 406 | 4 |
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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.










