Surf Forecasts:
Johanna surf forecast from 30 Aug 2026:
- Best quality surf: Wednesday 2 Sep, 10PM (local time) - 16ft (5.0m), 14s period, WSW swell with cross-offshore winds.
- Most powerful swell: Friday 4 Sep, 1AM (local time) - 18ft (5.5m), 15s period, SW swell with 13,435 kJ wave energy.
- Next surfable swell (1★+): Monday 31 Aug, 10AM (local time) - 10ft (3.0m), 14s period with SW swell.
Best Forecast Surf Conditions for Johanna this week:
The surf forecast for Johanna over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 31) at 10AM. The primary swell is predicted to be 3.0m and 14s period with a secondary swell of 1.3m and 20s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Johanna in the next 16 days are 5.5m 15s and forecast to arrive on Friday (Sep 04) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.4m 7s period and expected on Saturday (Sep 05) at 4AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Mon 31st Aug) | 10ft (3.0m) 14s |
| Best Surf | 10PM (Wed 2nd Sep) | 16ft (5.0m) 14s |
| Most Powerful | 1AM (Fri 4th Sep) | 18ft (5.5m) 15s |
Table - best surf conditions forecast for Johanna over the next 16 days.
The Lowdown
Alright, let’s break this down in feet and miles per hour.
We’ve got a solid run of swell coming through at Johanna. This is a beach and point break on the south coast, fully exposed to S and SW swells, so when it fires up, it fires.
Water temp is about 57°, which is standard for this time of year – nothing unusual.
The real action starts Monday, August 31st. That morning we’ve got a clean 10ft SW groundswell with a long 14-second period, and a light WNW cross-off breeze. Clean and powerful. Then that afternoon gets even better: glassy conditions, 10ft of SW swell, period stretching to 15 seconds. The wave energy reading is extremely high at 5556. This is for experienced surfers only – the waves will be well-shaped, with long, powerful lines. Crowds are often here, so get in early.
Tuesday, September 1st drops to 8ft, still solid, with a 15-second period and a clean NNW offshore wind to start. Energy is still very strong at 3204. Afternoon gets lumpy, so stick to the morning.
Things get big from Wednesday the 2nd into Thursday the 3rd. Swell builds to 12ft to 18ft. Thursday afternoon is a massive 18ft from the SW with 14-second period and an energy reading of 23120 – that is extreme. This is expert big-wave territory only. Wind is cross-onshore, so it’ll be choppy and heavy.
Friday the 4th drops back to 15ft to 16ft, but the wind turns cross-offshore, cleaning things right up. Energy is still enormous (8275 to 10560). Experienced crew only.
Saturday the 5th is a write-off. Strong 22 mph cross-onshore winds and 18ft lumpy swell – leave the board at home.
Sunday the 6th of September is a standout morning: 13ft from the SW, 14-second period, light NW cross-off breeze, clean, with 6566 energy. Powerful.
Monday the 7th drops to 7ft, but with a true offshore NNE breeze. Swell is WSW with a 13-second period. Energy at 1718. A good manageable session for experienced surfers.
From Tuesday the 8th through Wednesday the 9th, swell pumps back up to 16ft to 21ft, with periods up to 17 seconds and onshore wind. Energy readings hit 23664. Big, dangerous, blown-out. Not a paddle day.
Friday the 11th of September morning is glassy: 8ft WSW groundswell, 16-second period, no wind. Energy at 3512. Beautiful session for intermediates and up.
Saturday the 12th morning also glassy: 10ft SW swell, 14-second period, slight air. Energy strong at 5610.
From Sunday the 13th onward, the swell eases from 10ft down to 6ft by Monday the 14th. Winds are mostly clean, so there’s still some fun to be had, but less power.
The standout – Monday, August 31st afternoon: glassy, 10ft SW groundswell with a 15-second period, 5556 energy. Perfect combination of size, period, and wind.
Second standout – Sunday, September 6th morning: 13ft SW, 14-second period, clean cross-off breeze, 6566 energy. Slightly bigger, still clean, and very powerful.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Tue afternoon. Warm (max 20°C on Tue morning, min 8°C on Sun night). Winds increasing (calm on Mon afternoon, fresh winds from the NNW by Tue morning). | Days 4-6 Weather SummaryModerate rain (total 15mm), heaviest on Fri night. Very mild (max 18°C on Fri afternoon, min 7°C on Thu night). Winds increasing (light winds from the NNW on Thu night, strong winds from the NNW by Fri night). | ||||||||||||||||||||
Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | |||||||||||||||
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) | SW 13 | SW 13 | SW 14 | SW 14 | SW 15 | SW 16 | SW 15 | SW 15 | WSW 14 | WSW 16 | WSW 15 | WSW 14 | WSW 13 | SW 14 | SW 15 | SW 15 | SW 15 | WSW 15 | WSW 11 | WSW 11 | SW 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 3065 | 3307 | 3620 | 4062 | 3866 | 4978 | 3204 | 2027 | 4050 | 5674 | 6767 | 10156 | 8750 | 12166 | 13435 | 10560 | 8275 | 6034 | 6510 | 6608 | 5968 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-off | glassy | off | cross-off | cross | cross-on | cross | cross | cross-off | cross | cross-on | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | cross-on |
High Tide | 1:14PM0.46m | 1:20AM0.42m | 1:32PM0.45m | 1:54AM0.46m | 1:49PM0.45m | 2:28AM0.48m | 2:06PM0.44m | 3:02AM0.49m | 2:24PM0.44m | 3:39AM0.49m | 2:42PM0.43m | 4:19AM0.47m | 3:00PM0.43m | ||||||||
Low Tide | 7:25PM0.14m | 7:23AM0.11m | 7:43PM0.10m | 7:55AM0.13m | 8:03PM0.06m | 8:25AM0.15m | 8:27PM0.03m | 8:54AM0.18m | 8:53PM0.01m | 9:22AM0.21m | 9:23PM0.00m | 9:49AM0.25m | 9:58PM0.01m | ||||||||
 |  |  | | |  | |  |  | | | |  | | | | |  |  | |  | |
 | 6:52 | — | — | 6:50 | — | — | 6:50 | — | — | 6:48 | — | — | 6:47 | — | — | 6:45 | — | — | 6:43 | — | — |
 | — | 6:00 | — | — | 6:01 | — | — | 6:02 | — | — | 6:04 | — | — | 6:05 | — | — | 6:06 | — | — | 6:07 | — |
mm | — | — | — | — | — | — | — | 4 | 1 | — | — | 1 | 2 | — | — | — | 1 | 11 | 2 | 1 | — |
Temp °C | 12 | 11 | 10 | 13 | 13 | 11 | 20 | 18 | 13 | 13 | 13 | 13 | 12 | 13 | 10 | 17 | 18 | 13 | 12 | 11 | 10 |
Feels °C | 9 | 8 | 8 | 10 | 12 | 8 | 14 | 12 | 8 | 8 | 8 | 7 | 6 | 7 | 5 | 13 | 14 | 5 | 6 | 4 | 5 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 13 | SW 14 | SW 14 | SW 15 | SW 16 | SW 15 | SW 15 | WSW 14 | WSW 16 | WSW 15 | WSW 14 | — | SW 14 | SW 15 | SW 15 | SW 15 | WSW 15 | — | — | SW 12 |
| kJ | 3065 | 3307 | 3620 | 4062 | 3866 | 4978 | 3204 | 2027 | 4050 | 5674 | 6767 | 8965 | — | 10954 | 13435 | 10560 | 8275 | 6034 | — | — | 5968 |
Swell 2 Height (m) Direction Period (s) | SW 20 | SW 20 | — | SW 20 | SW 18 | — | — | NE 5 | SW 18 | — | — | — | — | — | — | — | — | — | — | — | WSW 20 |
| kJ | 373 | 198 | — | 1223 | 1690 | — | — | 8 | 263 | — | — | — | — | — | — | — | — | — | — | — | 395 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | NW 5 | WNW 6 | — | — | — | WSW 14 | WSW 13 | SW 14 | — | — | — | NNE 4 | WSW 11 | WSW 11 | — |
| kJ | — | — | — | — | — | — | 55 | 253 | — | — | — | 10156 | 8750 | 12166 | — | — | — | 20 | 6510 | 6608 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 21 | 21 | 21 | 0 | 0 | 0 | 575 | 41 | 21 | 21 | 41 | 53 | 55 | 22 | 0 | 18 | 18 | 475 | 548 | 664 | 21 |
Best forecast wave conditions in Far West of Victoria | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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Information about the Johanna Surf forecast
The above surf forecast table for Johanna provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Johanna can be found by selecting the local surf guide option on the grey menu. Our Johanna 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 (Johanna) 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 Johanna 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.
Johanna is 93 km (58 miles) from the city of Warrnambool. If you plan a holiday in Far West of Victoria, look for hotels and other accommodation in Warrnambool. Warrnambool has rooms for a wide range of budgets as well as car hire and transport links.
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