
Surf Forecasts:
Bali Bay (Glen Reef) surf forecast from 4 Sep 2026:
- Best quality surf: Sunday 6 Sep, 5AM (local time) - 7ft (2.1m), 20s period, SW swell with cross-offshore winds.
- Most powerful swell: Sunday 6 Sep, 5AM (local time) - 7ft (2.1m), 20s period, SW swell with 3,370 kJ wave energy.
- Next surfable swell (1★+): Sunday 6 Sep, 5AM (local time) - 7ft (2.1m), 20s 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 06) at 5AM. The primary swell is predicted to be 2.1m and 20s period with a secondary swell of 0.6m and 10s. Another secondary swell of 1.7m 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 2.1m 20s and forecast to arrive on Sunday (Sep 06) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Thursday (Sep 10) at 11PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Sun 6th Sep) | 7ft (2.1m) 20s |
| Best Surf | 5AM (Sun 6th Sep) | 7ft (2.1m) 20s |
| Most Powerful | 5AM (Sun 6th Sep) | 7ft (2.1m) 20s |
Table - best surf conditions forecast for Bali Bay (Glen Reef) over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s talk about what’s on the cards for Bali Bay (Glen Reef). This is a reef break, and it’s a very consistent wave, so it’s always in the conversation. Right now, the water is sitting at 57°F, which is a bit colder than normal for this time of year, so you might want an extra mil.
We’ve got a rough start. Friday the 4th is a write-off – strong winds, messy, and the swell is a confused 12 feet from the SSE at a short 8 seconds. That’s a lot of water moving, but it’s ugly. Saturday the 5th is still not great; the swell drops to 7 feet, but the wind is still cross-off and the energy is moderate. The quality is just marginal.
Now, hold onto your board. Sunday morning, the 6th, is where it gets interesting. The swell swings to the SW at 8 feet, and here’s the kicker – the period is a massive 18 seconds. That’s a proper groundswell with very long period. The combined energy is strong, and the wind is light from the SE. The report says excellent for experienced surfers. This is the standout of the first week. That long period will make the reef line up beautifully, but it’s a 8-foot swell, so it’s solid. It’s not for beginners, but for the crew that knows the reef, this is the one to aim for.
The rest of the week is a bit fickle. We get a mix of smaller SW swells, but the wind is often cross or cross-on, keeping the quality marginal. There’s a brief moment of glass on Tuesday morning the 8th with a 4-foot SSW swell, but it’s small. The energy is weak. Nothing to get too excited about.
The next real standout arrives on Saturday the 12th. This is 9 days out, so keep an eye on it. The forecast is showing a 10-foot SW groundswell with a 17-second period, glassy conditions, and the energy is very strong. The report calls it exceptional for expert surfers. That’s the big one on the horizon. However, Saturday afternoon, the swell jumps to 12 feet with onshore wind, and the report says it’s too big for the break. The morning window is the ticket.
After that, the swell stays big through the 13th, 16th, and 17th, often hitting 12 feet with strong to very strong energy. The wind is mostly cross or cross-on, and the report keeps saying it’s too big for the break. This is some serious size, so only the most experienced with a big-wave quiver should even look at it. The 18th brings a 10-foot SW swell with cleaner cross-off winds, but it’s still a heavy wave. The period drops to 12 seconds, so it’s a bit more manageable.
The last couple of days, the 19th, fade out with poor conditions and smaller, messy swell. The window is closing.
So, the bottom line: for the best quality, it’s Sunday morning the 6th. For the biggest, most powerful session, it’s Saturday morning the 12th. Don’t sleep on those.
Rusty out.
Short Range ForecastMostly dry. Warm (max 25°C on Sun afternoon, min 11°C on Fri night). Winds decreasing (near gales from the SE on Fri afternoon, calm by Sun night). | Days 5-7 Weather SummaryMostly dry. Warm (max 23°C on Mon afternoon, min 14°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Fri 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | ||||||||||||||
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) | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SW 21 | SW 18 | SW 16 | SW 15 | SW 14 | SW 13 | SSW 12 | SSW 11 | WSW 12 | SW 11 | WSW 13 | WSW 13 | WSW 12 | SW 15 | SW 14 | WSW 13 |
Wave Graph | ||||||||||||||||||||
1375 | 680 | 593 | 622 | 2460 | 3122 | 1978 | 1441 | 1471 | 1155 | 452 | 280 | 140 | 172 | 304 | 281 | 458 | 743 | 1387 | 1207 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross | cross-on | glassy | glassy | cross-on | cross | cross-on | cross-on | cross | cross | cross | cross |
High Tide | 8:36PM1.38m | 9:45AM1.27m | 10:31PM1.33m | 11:38AM1.35m | 00:11AM1.41m | 12:50PM1.50m | 1:14AM1.53m | 1:40PM1.65m | 2:01AM1.64m | 2:21PM1.78m | 2:41AM1.72m | 2:58PM1.86m | 3:17AM1.77m | |||||||
Low Tide | 2:06PM0.74m | 3:24AM0.73m | 4:12PM0.79m | 5:18AM0.70m | 6:02PM0.70m | 6:35AM0.59m | 7:09PM0.55m | 7:28AM0.47m | 7:57PM0.41m | 8:11AM0.37m | 8:38PM0.31m | 8:48AM0.30m | 9:14PM0.25m | |||||||
— | — | 7:00 | — | — | 6:58 | — | — | 6:56 | — | — | 6:56 | — | — | 6:54 | — | — | 6:52 | — | — | |
6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — | 6:32 | — | — | 6:34 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 13 | 15 | 20 | 16 | 18 | 25 | 24 | 23 | 23 | 21 | 20 | 22 | 18 | 18 | 18 | 16 | 16 | 17 | 14 |
Feels °C | 7 | 4 | 10 | 15 | 11 | 16 | 23 | 23 | 21 | 22 | 21 | 20 | 21 | 17 | 17 | 16 | 15 | 14 | 14 | 9 |
Swell 1 Height (m) Direction Period (s) | WSW 11 | WSW 11 | SSW 10 | SSW 10 | SW 21 | SW 18 | SW 16 | SW 15 | SW 14 | SW 13 | SSW 12 | SSW 11 | SW 11 | SW 11 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | SW 14 | WSW 13 |
93 | 101 | 92 | 140 | 2460 | 3122 | 1978 | 1441 | 1471 | 1155 | 452 | 280 | 121 | 172 | 304 | 281 | 458 | 585 | 1387 | 1207 | |
Swell 2 Height (m) Direction Period (s) | S 14 | SSW 13 | WSW 10 | WSW 10 | SW 12 | SSE 8 | — | SSE 8 | SSE 6 | SE 8 | WSW 12 | WSW 12 | WSW 12 | WSW 14 | SSE 9 | SSE 9 | SSE 8 | SW 15 | WSW 10 | SW 14 |
15 | 56 | 67 | 38 | 39 | 249 | — | 78 | 16 | 43 | 355 | 150 | 140 | 138 | 26 | 7 | 7 | 743 | 275 | 407 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | SW 25 | SW 10 | — | — | — | SSE 14 | SSE 13 | SW 18 | SW 16 | S 10 | SSE 9 | W 11 | S 8 | SE 12 | SSE 11 | — | W 12 |
— | — | — | 162 | 24 | — | — | — | 18 | 17 | 13 | 42 | 73 | 28 | 21 | 5 | 6 | 12 | — | 26 | |
Wind waves Height (m) Direction Period (s) | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SE 8 | SSE 9 | SE 8 | — | — | ESE 8 | — | — | S 3 | — | S 3 | S 3 | SSE 3 | SSE 4 | SSE 4 |
1375 | 680 | 593 | 622 | 623 | 701 | 228 | 227 | — | — | 22 | — | — | 2 | — | 3 | 5 | 9 | 15 | 43 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 183 | 4 | 4 | 4 | 6 | 0 | 4 | 0 | 11 | 21 | 0 | 0 | 4 | 4 | 4 | 23 | 4 | 4 | 345 | 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.










