Johanna Surf Break

Lat Long: 38.78° S 143.42° E

Johanna Surf Forecast and Surf Report

Issued: 3 am 17 Aug 2026 (local time)

Forecast update in  hr  min

Today's Johanna sea temperature is
14.0° C
0.7° 

Johanna surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Johanna surf forecast from 16 Aug 2026:

  • Best quality surf: Sunday 23 Aug, 1AM (local time) - 13ft (4.0m), 15s period, SW swell with cross-offshore winds.
  • Most powerful swell: Saturday 22 Aug, 7PM (local time) - 13ft (4.0m), 15s period, SW swell with 7,970 kJ wave energy.
  • Next surfable swell (1★+): Monday 17 Aug, 10AM (local time) - 8ft (2.5m), 16s period with WSW 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 17) at 10AM. The primary swell is predicted to be 2.5m and 16s period with a secondary swell of 0.7m and 11s. 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 4.0m 15s and forecast to arrive on Saturday (Aug 22) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 7s period and expected on Thursday (Aug 20) at 4AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+)10AM (Mon 17th Aug)8ft (2.5m) 16s
Best Surf 1AM (Sun 23rd Aug)13ft (4.0m) 15s
Most Powerful 7PM (Sat 22nd Aug)13ft (4.0m) 15s

Table - best surf conditions forecast for Johanna over the next 16 days.


The Lowdown

Alright, mate, Rusty here. Let’s have a look at what’s comin’ down the line.

We’ve got one spot on the cards for the next two and a half weeks: Johanna. Honestly, the first few days are a bit of a mixed bag—don’t expect a lot of perfection early on. The water temp’s hangin’ at 57°, which is about what you’d expect for this time of year, so no surprises on that front.

Monday the 17th kicks off with a solid 8ft WSW swell, period at 16 seconds—that’s a long period groundswell, full of energy. The combined energy is crackin’ at (3071), but the wind is a cross-off from ENE at 6 mph, so it’ll be clean enough for experienced surfers only. That 8ft is a bit much for beginners, and the long period means it’ll be better on a point or reef setup. Johanna is a beach and point, so it’s got the right shape for that. Later in the arvo, the swell hangs in there but the wind picks up a bit—still cross-off, but it’s marginal with tide.

Tuesday the 18th looks nicer: morning sees 7ft from the WSW, period 14 seconds, and the wind is offshore from the NNE at 9 mph. That’s gentle offshore and clean. Energy drops a touch (2150), but it’s still got some punch. This is your call for a decent session if you’re an intermediate or better. The arvo keeps the same vibe, swell a little smaller at 6ft, still clean.

Wednesday the 19th takes a dive—4ft, light, and the wind gets fresh from the north at 19 mph. It’s offshore but the swell’s weak, energy’s down to 720. Not worth paddlin’ out for unless you’re desperate.

Thursday the 20th isn’t much better. Mornin’ has 4ft but the cross-off wind from NW at 12 mph keeps it clean-ish. Energy jumps weirdly to 1592, but that swell’s not solid enough to get excited about. Arvo turns to 8ft but with a cross-shore wind from the west—that’s gonna chop it up. Hard pass.

Friday the 21st and into the weekend—honestly, the swell size gets bigger but the wind is a disaster. Friday has 7ft cross-onshore, Saturday pushes up to 12-13ft with cross-shore winds. That’s raw power (energy up at 6192 to 7248) but the conditions are messy. It’s more of a kite-surf show than a paddle surf one.

Sunday the 23rd is a slight improvement: 10ft SW swell, cross-off wind from NW at 12 mph, clean. That’s big—only for experts—but if you can handle it, there’ll be some sizey walls. Energy is high at 5841.

The middle of the week from Monday 24th into Thursday 27th is pretty bleak—onshore winds, dropping swell, and poor conditions. Not worth your time.

Now, the real standout—the absolute pick of this whole outlook—is Saturday the 29th of August. Morning brings a massive 16ft WSW swell, period 12 seconds. Wind is cross-off from the east at 12 mph, so it’s clean. Combined energy hits 7680—that’s proper strong. This is for experts only. If you’re an experienced charger and you’re free that morning, get down to Johanna. It’ll be big, raw, and with that cross-off wind it should hold some nice lines. Crowds are often a thing here, but on a day this size, it’ll thin out. Afternoon drops to 15ft, still clean, still solid.

Sunday the 30th is another good one: 8ft SW swell at 16 seconds, light cross-off breeze from ENE at 6 mph. Energy (3137). That’s a beaut of a session for strong intermediates or above.

And then as we roll into Monday 31st August and Tuesday 1st September, we get a nice run of offshore winds from the NNE—clean, solid 7-12ft swell, long periods. Energy keeps up (2293-4319). That’s a solid finish to the outlook.

So to wrap it: the best on offer is without doubt the morning of Saturday the 29th of August—big, clean, powerful, for experts only. Sunday the 30th and the Monday-Tuesday after are your backups for solid, clean waves with a bit more manageability.

Stay salty,
Rusty.

Short Range Forecast

Light rain (total 8mm), mostly falling on Wed morning. Very mild (max 18°C on Tue morning, min 11°C on Wed night). Mainly fresh winds.

Days 4-6 Weather Summary

Light rain (total 6mm), mostly falling on Thu afternoon. Very mild (max 15°C on Thu morning, min 9°C on Thu night). Wind will be generally light.

Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
5
4
5
4
4
3
2
2
1
3
2
2
2
3
4
5
5
7
5
5
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.5
WSW
16
2.5
SW
16
2.5
SW
15
2.1
WSW
14
1.9
WSW
14
1.5
WSW
14
1.3
WSW
15
1.3
WSW
15
1.2
WSW
14
2.2
W
8
2.5
W
13
2.5
WSW
12
2.1
WSW
15
3
WSW
14
3.5
WSW
16
3.5
WSW
15
4
SW
15
4
SW
15
3
SW
14
3.5
SW
16
2.2
SSW
15
Wave Graph
Metric surfscale
Energy kJ
2948
3515
3004
1809
1349
947
720
693
585
595
2209
1649
1772
3601
5647
6192
7248
6424
4100
5863
2148
Wind (km/h)
10
ENE
15
E
10
NE
15
NNE
15
NNE
20
NE
30
N
20
NNW
25
NNW
20
NW
25
W
20
WSW
15
W
20
W
20
WNW
25
W
20
W
10
NW
20
NW
15
WNW
20
NNW
Wind State
cross-off
cross-off
cross-off
off
off
off
off
cross-off
cross-off
cross-off
cross
cross-on
cross-on
cross
cross
cross
cross-on
cross-off
cross-off
cross
cross-off
High Tide
2:07PM0.48m
2:44AM0.47m
2:31PM0.47m
3:23AM0.47m
2:54PM0.46m
4:01AM0.46m
3:14PM0.44m
4:39AM0.43m
3:32PM0.42m
5:21AM0.40m
3:44PM0.40m
6:18AM0.37m
3:45PM0.38m
Low Tide
8:26PM0.05m
8:38AM0.13m
8:56PM0.03m
9:10AM0.17m
9:25PM0.03m
9:40AM0.20m
9:54PM0.04m
10:08AM0.24m
10:23PM0.06m
10:32AM0.28m
10:54PM0.09m
10:54AM0.31m
11:32PM0.11m
clear
clear
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part cloud
part cloud
part cloud
light rain
thunderstorm
part cloud
part cloud
rain showers
part cloud
rain showers
cloud
part cloud
rain showers
part cloud
part cloud
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cloud
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<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:11
7:09
7:07
7:07
7:05
7:03
7:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:50
5:51
5:52
5:52
5:52
5:53
5:54
 mm
5
3
4
1
1
Temp °C
17
16
13
18
18
14
13
14
12
15
11
11
12
13
12
14
13
12
14
14
13
Feels °C
14
12
10
14
15
10
7
10
7
10
6
6
8
9
8
9
9
10
9
10
9
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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