
Surf Forecasts:
Bali Bay (Glen Reef) surf forecast from 21 Jul 2026:
- Best quality surf: Thursday 23 Jul, 8PM (local time) - 11ft (3.5m), 17s period, SW swell with cross-offshore winds.
- Most powerful swell: Thursday 23 Jul, 11PM (local time) - 13ft (4.0m), 17s period, SW swell with 8,908 kJ wave energy.
- Next surfable swell (1★+): Tuesday 21 Jul, 5AM (local time) - 4ft (1.2m), 15s 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 (Jul 21) at 5AM. The primary swell is predicted to be 1.2m and 15s period with a secondary swell of 0.9m and 7s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Bali Bay (Glen Reef) in the next 16 days are 4.0m 17s and forecast to arrive on Thursday (Jul 23) at 11PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Saturday (Jul 25) at 5PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Tue 21st Jul) | 4ft (1.2m) 15s |
| Best Surf | 8PM (Thu 23rd Jul) | 11ft (3.5m) 17s |
| Most Powerful | 11PM (Thu 23rd Jul) | 13ft (4.0m) 17s |
Table - best surf conditions forecast for Bali Bay (Glen Reef) over the next 16 days.
The Lowdown
Alright, this is Rusty, your local surf reporter, bringing you the long-range picture for Bali Bay (Glen Reef). We’ve got some serious swell on the horizon, so let’s get into it.
The pattern over the next 16 days is dominated by a consistent run of SW groundswell, with a few windows of absolute magic. It’s not all smooth sailing – wind and size will test your patience – but there are some killer sessions lined up.
We kick off on Tuesday, July 21st with a solid 7.9ft SW swell at 14 seconds. The combined energy is pumping at 2375, and with glassy conditions in the morning, it’s going to be excellent surf for experienced surfers. The water temp is about average for this time of year. This is the standout of the early period. Wednesday and Thursday see a drop in quality as cross and cross-off winds chop things up, though the swell stays in the 6.6ft to 9.8ft range. The afternoon on Thursday sees a 9.8ft SW swell, but with a cross-shore wind, it’s not the pick.
Now, hold on for Friday, July 24th. The morning brings a beast of an 11.5ft SW groundswell with a very long period of 15 seconds. The combined energy is a massive 5020. This is expert territory only. It’s a long-period groundswell, so expect it to stand up tall and a bit straight at the reef, but the wind is light cross-shore. For the experienced crew, this is the big one, but it’s a serious beast.
Saturday, July 25th, we get a clean morning with a 6.6ft SW swell and cross-off winds. The energy is still strong at 2295. That’s a great day for intermediates. The following Sunday, July 26th, is pure glass again with a 6.2ft SW swell, making for another excellent morning.
The second week starts with a drop in quality. Monday, July 27th, has a long-period 16-second swell, but it’s only 3.9ft and the wind is messy. The 27th and 28th have strong winds – 22 to 25 mph – making it more of a kite-surfing setup than a paddle session. However, the mornings of the 29th, 30th, and 31st all offer clean, glassy conditions with solid SW swell around 6.9ft to 7.5ft. The energy is strong, and these are all excellent for experienced surfers. The morning of July 31st is a true standout with calm, glassy conditions and a 6.2ft SW swell.
Looking further ahead to Saturday, August 1st, we have another glassy morning with a 7.9ft WSW swell at a very long 16 seconds. The energy is 2794. That’s a promising long-range standout, but less certain. The following days have shorter period swells and more wind. The morning of Tuesday, August 4th, cleans up again with a glassy 6.6ft SW swell, offering one last excellent session before the window closes.
So, the best on offer is the big Friday, July 24th, for the experts, and the glassy mornings of July 21st, July 26th, July 31st, and August 1st for the rest of us. Crowds are possible at this spot, so get there early for the clean ones.
Short Range ForecastMostly dry. Very mild (max 15°C on Mon night, min 11°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 19°C on Sat afternoon, min 13°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | ||||||||||||||
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) | SSW 16 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | WSW 12 | SW 12 | SW 13 | SW 16 | SW 15 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 |
Wave Graph | |||||||||||||||||||
318 | 2290 | 2570 | 1799 | 1298 | 1112 | 907 | 1448 | 2419 | 8348 | 5020 | 4005 | 2693 | 1346 | 1290 | 895 | 946 | 1404 | 1319 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | cross-on | glassy | cross | cross | cross-off | cross-off | cross | cross | cross | cross | cross-off | cross-off | cross | glassy | glassy | cross | cross |
High Tide | 8:20AM1.30m | 8:49PM1.42m | 9:27AM1.22m | 9:56PM1.35m | 10:55AM1.20m | 11:15PM1.32m | 12:19PM1.24m | 00:26AM1.34m | 1:18PM1.32m | 1:19AM1.39m | 2:01PM1.41m | 2:01AM1.46m | |||||||
Low Tide | 2:24AM0.66m | 2:19PM0.71m | 3:28AM0.73m | 3:26PM0.79m | 4:45AM0.76m | 4:51PM0.84m | 6:00AM0.73m | 6:13PM0.82m | 6:58AM0.67m | 7:14PM0.76m | 7:42AM0.60m | 8:00PM0.69m | |||||||
— | 7:47 | — | — | 7:46 | — | — | 7:45 | — | — | 7:45 | — | — | 7:43 | — | — | 7:43 | — | — | |
5:58 | — | 5:59 | — | — | 5:59 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 13 | 15 | 13 | 13 | 14 | 14 | 11 | 13 | 14 | 14 | 16 | 14 | 16 | 19 | 19 | 18 | 18 | 15 |
Feels °C | 13 | 13 | 14 | 11 | 11 | 11 | 11 | 6 | 9 | 13 | 13 | 14 | 12 | 15 | 17 | 18 | 17 | 17 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 8 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | WSW 12 | SW 12 | SW 13 | SW 16 | SW 15 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 |
110 | 2290 | 2570 | 1799 | 1298 | 1112 | 907 | 1448 | 2419 | 8348 | 5020 | 4005 | 2693 | 1346 | 1290 | 895 | 946 | 1404 | 1319 | |
Swell 2 Height (m) Direction Period (s) | SSW 16 | W 9 | W 9 | SE 11 | SSW 15 | SSW 14 | SSW 12 | ESE 13 | SW 19 | — | — | SSW 18 | WSW 13 | SSW 13 | SSW 12 | SSW 12 | SW 14 | — | SW 18 |
318 | 25 | 14 | 30 | 73 | 158 | 318 | 17 | 296 | — | — | 182 | 1127 | 949 | 501 | 317 | 412 | — | 81 | |
Swell 3 Height (m) Direction Period (s) | SW 12 | SE 11 | W 9 | — | ESE 11 | ESE 11 | ESE 13 | — | ESE 13 | — | — | SE 12 | SE 11 | — | — | SSE 6 | SSE 5 | — | — |
172 | 60 | 14 | — | 12 | 12 | 18 | — | 16 | — | — | 5 | 5 | — | — | 24 | 3 | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | NW 4 | NNW 4 | N 5 | — | — | — | — | SSE 4 | SE 4 | SE 5 | SE 5 | — | — | — |
— | — | — | — | — | 10 | 32 | 54 | — | — | — | — | 11 | 38 | 70 | 35 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 4 | 0 | 11 | 11 | 17 | 30 | 17 | 4 | 4 | 4 | 0 | 0 | 4 | 0 | 0 | 4 | 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.










