Surf Forecasts:
Wonthaggi surf forecast from 19 Aug 2026:
- Best quality surf: Sunday 23 Aug, 7PM (local time) - 5.5ft (1.7m), 13s period, WSW swell with cross-offshore winds.
- Most powerful swell: Saturday 22 Aug, 1PM (local time) - 8ft (2.5m), 15s period, WSW swell with 3,420 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 7PM (local time) - 5.5ft (1.7m), 13s period with WSW swell.
Best Forecast Surf Conditions for Wonthaggi this week:
The surf forecast for Wonthaggi over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 23) at 7PM. The primary swell is predicted to be 1.7m and 13s period with a secondary swell of 0.9m and 16s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Wonthaggi in the next 16 days are 2.5m 15s and forecast to arrive on Saturday (Aug 22) at 1PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Sun 23rd Aug) | 5.5ft (1.7m) 13s |
| Best Surf | 7PM (Sun 23rd Aug) | 5.5ft (1.7m) 13s |
| Most Powerful | 1PM (Sat 22nd Aug) | 8ft (2.5m) 15s |
Table - best surf conditions forecast for Wonthaggi over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's on the table for Wonthaggi over the next 16 days.
Honestly, it's a tough start. The first week-plus is a real write-off, with nothing but poor or marginal conditions showing up through the end of August. The swell is there, but the wind is a constant problem. We're looking at a lot of cross-onshore and onshore wind, creating choppy, ugly surf. The water temp is sitting at 56°F which is about 2°F warmer than average for this time of year, so not a total shock to the system, but you'll still want a decent wetsuit.
The first real glimmer of hope comes in on Friday, the 28th of August. That morning, we finally see a clean window. The swell is a solid 8ft from the WSW, with a very long period of 17 seconds. That's a proper groundswell with serious energy (3089). The wind is a light, cross-offshore from the NNE, leaving the face clean and lined up. This is a setup for experienced surfers only – it's gonna be big, powerful, and the long period will make it suck hard. The following afternoon also looks clean, with 7ft swell and cross-off winds. This is the standout window of the whole forecast.
Then Saturday the 29th of August cleans up as well. We get a morning of offshore wind from the ENE with a 5ft swell from the WSW. The energy is moderate (862) but the conditions are clean, making for a very good session. The afternoon holds as well, with a gentle offshore and clean 4ft waves.
After that, it's back to the doldrums. The wind swings around again, and the swell drops right off. The first week of September looks pretty flat and messy, with only small, weak swells and poor winds. The period from the 30th of August to the 4th of September is a long gap of nothing special.
So, to sum it up: wait until Friday the 28th of August. That's your best bet. The big, long-period WSW groundswell with clean cross-off winds is the real deal. Saturday the 29th is another good one. Everything else is a hard pass.
Rusty
Short Range ForecastLight rain (total 4mm), mostly falling on Thu night. Very mild (max 15°C on Thu afternoon, min 10°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Tue night. Very mild (max 16°C on Mon afternoon, min 9°C on Tue night). Winds decreasing (fresh winds from the NNW on Mon morning, calm by Tue night). | ||||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | |||||||||||||||
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) | WSW 13 | WSW 13 | WSW 13 | WSW 16 | WSW 14 | WSW 16 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 13 | WSW 16 | SW 14 | SW 14 | WSW 12 | WSW 13 | WSW 13 | WSW 14 | WSW 14 | WSW 13 | WSW 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 158 | 198 | 294 | 740 | 1443 | 3317 | 3348 | 3271 | 2765 | 1886 | 1100 | 1608 | 834 | 799 | 904 | 890 | 983 | 1447 | 1080 | 711 | 626 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross | cross-on | cross | cross | cross-on | on | cross-on | on | on | cross | on | cross-off |
High Tide | 4:44PM2.22m | 5:37AM2.12m | 5:17PM2.12m | 6:18AM2.02m | 5:51PM2.03m | 7:02AM1.93m | 6:27PM1.93m | 7:54AM1.84m | 7:09PM1.83m | 8:56AM1.79m | 8:04PM1.74m | 10:05AM1.80m | 9:16PM1.68m | ||||||||
Low Tide | 10:48AM0.67m | 11:11PM0.24m | 11:25AM0.79m | 11:48PM0.31m | 12:02PM0.90m | 00:27AM0.40m | 12:42PM1.01m | 1:10AM0.49m | 1:31PM1.11m | 2:00AM0.57m | 2:33PM1.18m | 3:00AM0.62m | 3:52PM1.19m | ||||||||
 |  |  | | |  |  | | | | | |  | |  | | | | | |  | |
 | 6:58 | — | — | 6:56 | — | — | 6:56 | — | — | 6:54 | — | — | 6:52 | — | — | 6:50 | — | — | 6:50 | — | — |
 | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — | — | 5:49 | — | — | 5:50 | — |
mm | — | — | 3 | — | — | — | 1 | — | — | — | — | — | — | 2 | 1 | — | — | 4 | — | — | — |
Temp °C | 14 | 15 | 12 | 12 | 13 | 12 | 12 | 13 | 13 | 13 | 14 | 13 | 15 | 16 | 12 | 12 | 12 | 11 | 11 | 11 | 11 |
Feels °C | 9 | 10 | 7 | 7 | 8 | 7 | 7 | 8 | 9 | 9 | 12 | 9 | 9 | 12 | 10 | 9 | 8 | 8 | 8 | 8 | 9 |
Swell 1 Height (m) Direction Period (s) | WSW 8 | WSW 13 | WSW 13 | WSW 16 | WSW 14 | SW 17 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 13 | WSW 16 | SW 14 | SW 14 | WSW 12 | WSW 13 | WSW 13 | WSW 14 | WSW 14 | WSW 13 | WSW 12 |
| kJ | 120 | 198 | 294 | 740 | 1443 | 1036 | 3348 | 1847 | 2765 | 1886 | 1100 | 1608 | 834 | 799 | 904 | 890 | 983 | 1447 | 1080 | 711 | 626 |
Swell 2 Height (m) Direction Period (s) | WSW 13 | SW 17 | WSW 16 | WSW 19 | SW 17 | — | — | — | — | SW 18 | SW 16 | W 5 | — | SW 20 | SW 18 | WSW 18 | WSW 16 | — | — | — | SW 16 |
| kJ | 158 | 140 | 181 | 251 | 439 | — | — | — | — | 157 | 527 | 27 | — | 15 | 83 | 207 | 458 | — | — | — | 42 |
Swell 3 Height (m) Direction Period (s) | WSW 18 | WSW 17 | — | W 11 | — | — | — | — | — | — | — | — | W 21 | — | — | — | — | — | — | — | — |
| kJ | 128 | 116 | — | 64 | — | — | — | — | — | — | — | — | 9 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 5 | W 8 | W 5 | W 7 | NW 4 | WSW 16 | WSW 8 | WSW 15 | — | — | — | NW 3 | NW 5 | NW 4 | NW 4 | — | — | SSW 5 | — | W 4 | NW 4 |
| kJ | 75 | 110 | 85 | 261 | 14 | 3317 | 526 | 3271 | — | — | — | 5 | 54 | 40 | 7 | — | — | 20 | — | 13 | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 11 | 23 | 102 | 41 | 23 | 103 | 103 | 102 | 11 | 7 | 11 | 11 | 94 | 30 | 16 | 34 | 35 | 16 | 7 | 16 | 7 |
Best forecast wave conditions in East Coast of Victoria | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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Information about the Wonthaggi Surf forecast
The above surf forecast table for Wonthaggi provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Wonthaggi can be found by selecting the local surf guide option on the grey menu. Our Wonthaggi 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 (Wonthaggi) 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 Wonthaggi 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.
Wonthaggi is 58 km (36 miles) from Cranbourne. If you plan a holiday in East Coast of Victoria, look for hotels and other accommodation in Cranbourne. Cranbourne has rooms for a wide range of budgets as well as car hire and transport links.
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