Surf Forecasts:
Gunnamatta Beach surf forecast from 24 Jul 2026:
- Most powerful swell: Wednesday 29 Jul, 7AM (local time) - 11ft (3.5m), 16s period, SW swell with 6,378 kJ wave energy.
Best Forecast Surf Conditions for Gunnamatta Beach this week:
The most powerful waves expected at Gunnamatta Beach in the next 16 days are 3.5m 16s and forecast to arrive on Wednesday (Jul 29) at 7AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 4s period and expected on Tuesday (Jul 28) at 4AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7AM (Wed 29th Jul) | 11ft (3.5m) 16s |
Table - best surf conditions forecast for Gunnamatta Beach over the next 16 days.
The Lowdown
Gunnamatta Beach, mates. It’s a bit of a rough start to the outlook here. The southwest groundswell is pumping through the first several days, with the combined energy values (5666, 4168, 5557) easily in the strong to very strong range—there’s plenty of power in the water. The problem is the wind. For most of the opening week, it’s blowing onshore or cross-onshore from the west and southwest, often a fresh or strong breeze, and that’s just trashing what would otherwise be a solid swell. The water temp feels about average for the time of year, so nothing out of the ordinary there.
It’s not until Monday the 3rd of August that things finally come together. The early part of the week is a write-off: Saturday the 25th and Sunday the 26th are messy, with onshore winds and choppy conditions. Monday the 27th is cleaner, but the swell drops to around 4ft and the wind cross-off. Tuesday the 28th and Wednesday the 29th are total no-go’s with strong winds and poor surf.
But then the pattern flips. Monday the 3rd of August is the standout. The morning has a solid 7ft southwest groundswell (combined energy 2163) with a clean offshore breeze from the northeast. That’s clean lines, good energy, and the period at 15 seconds means real groundswell punch. Tuesday the 4th also worth a mention with gentle offshore wind and 6-6ft swell, but it’s Monday that’s the pick. Crowds are often an issue here, so you’ll want to be an early bird for a peak. The longer period means those sets will be spaced out, making the paddle easy between them, but at a beach break like this, that long period can make the wave run a bit straight.
There is also a late look on Sunday the 9th of August with a light breeze, and 3ft swell from the southwest, clean and inviting but small. Could be a fun little board wave if you’re not expecting much.
For the kite surfers among us, Wednesday the 29th of July and Tuesday the 28th with those strong cross-onshore winds and 10ft+ swell would be more interesting for kiting than paddle surfing—the setup looks wild out there.
So, the best bet in this window is Monday the 3rd of August, with backup on Tuesday the 4th. The first week has too much wind, but as we say, a long forecast can always change.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Fri night. Very mild (max 14°C on Sun afternoon, min 10°C on Sat night). Winds decreasing (strong winds from the WNW on Fri night, light winds from the WNW by Sun afternoon). | Days 5-7 Weather SummaryLight rain (total 8mm), mostly falling on Tue afternoon. Very mild (max 13°C on Mon night, min 9°C on Tue afternoon). Winds decreasing (strong winds from the W on Tue afternoon, light winds from the SW by Wed night). | ||||||||||||||||||
Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | ||||||||||||||
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 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 13 | SW 13 | SW 12 | SW 14 | SW 15 | SW 14 | SW 13 | SW 13 | SW 13 | SW 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 3527 | 3089 | 2271 | 1546 | 802 | 659 | 533 | 414 | 326 | 892 | 946 | 520 | 4627 | 5366 | 3094 | 1693 | 1037 | 753 | 613 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross | cross-on | on | on | on | cross-on | cross-on | cross-on | cross-on |
High Tide | 7:43AM1.37m | 6:49PM1.36m | 8:42AM1.33m | 7:32PM1.29m | 9:50AM1.32m | 8:29PM1.23m | 11:00AM1.35m | 9:41PM1.19m | 12:00PM1.41m | 10:59PM1.20m | 12:48PM1.48m | 00:06AM1.23m | |||||||
Low Tide | 00:58AM0.32m | 1:15PM0.83m | 1:43AM0.37m | 2:12PM0.91m | 2:35AM0.41m | 3:25PM0.95m | 3:37AM0.43m | 4:49PM0.94m | 4:41AM0.42m | 6:00PM0.88m | 5:41AM0.40m | 6:54PM0.80m | |||||||
 |  |  |  |  | | | | |  | | |  | | | | |  |  | |
 | — | 7:28 | — | — | 7:28 | — | — | 7:26 | — | — | 7:26 | — | — | 7:24 | — | — | 7:24 | — | — |
 | — | — | 5:24 | — | — | 5:25 | — | — | 5:27 | — | — | 5:27 | — | — | 5:28 | — | — | 5:29 | — |
mm | 1 | 1 | — | — | — | — | — | — | — | — | 1 | 3 | 3 | — | — | 1 | — | — | — |
Temp °C | 13 | 13 | 13 | 12 | 13 | 14 | 14 | 14 | 14 | 13 | 12 | 12 | 11 | 11 | 12 | 11 | 11 | 11 | 11 |
Feels °C | 7 | 6 | 7 | 6 | 10 | 11 | 11 | 9 | 6 | 4 | 3 | 3 | 1 | 4 | 4 | 5 | 6 | 7 | 7 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 13 | SW 13 | SW 12 | S 15 | SW 15 | SW 14 | SW 13 | SW 13 | SW 13 | SW 12 |
| kJ | 3527 | 2577 | 1897 | 1291 | 802 | 659 | 533 | 414 | 326 | 892 | 946 | 520 | 109 | 5366 | 3094 | 1693 | 1037 | 753 | 613 |
Swell 2 Height (m) Direction Period (s) | — | — | — | SW 18 | SW 16 | WSW 16 | SSW 17 | SW 15 | SW 14 | SSW 14 | — | SW 15 | — | SSW 16 | SSW 15 | — | — | SW 25 | SW 24 |
| kJ | — | — | — | 12 | 11 | 26 | 27 | 77 | 179 | 67 | — | 266 | — | 191 | 72 | — | — | 25 | 22 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | S 17 | — | S 18 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 5 | — | 6 | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 11 | SW 12 | SW 12 | SW 12 | — | — | — | NNW 2 | N 3 | NNW 4 | WNW 5 | WSW 7 | SW 14 | — | — | — | — | WSW 3 | — |
| kJ | 2170 | 3089 | 2271 | 1546 | — | — | — | 1 | 8 | 41 | 78 | 366 | 4627 | — | — | — | — | 5 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 49 | 49 | 15 | 46 | 25 | 5 | 5 | 5 | 47 | 184 | 78 | 281 | 752 | 46 | 60 | 23 | 15 | 5 | 9 |
Best forecast wave conditions in Mornington Peninsula | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
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Information about the Gunnamatta Beach Surf forecast
The above surf forecast table for Gunnamatta Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Gunnamatta Beach can be found by selecting the local surf guide option on the grey menu. Our Gunnamatta Beach 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 (Gunnamatta Beach) 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 Gunnamatta Beach 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.
Gunnamatta Beach is 31 km (19 miles) from Mornington. If you plan a holiday in Mornington Peninsula, look for hotels and other accommodation in Mornington. Mornington has rooms for a wide range of budgets as well as car hire and transport links.
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