Surf Forecasts:
Gunnamatta Beach surf forecast from 15 Jul 2026:
- Best quality surf: Friday 17 Jul, 1AM (local time) - 7.5ft (2.3m), 15s period, SW swell with glassy winds.
- Most powerful swell: Thursday 16 Jul, 1PM (local time) - 8ft (2.5m), 15s period, SW swell with 2,942 kJ wave energy.
- Next surfable swell (1★+): Friday 17 Jul, 1AM (local time) - 7.5ft (2.3m), 15s period with SW swell.
Best Forecast Surf Conditions for Gunnamatta Beach this week:
The surf forecast for Gunnamatta Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Jul 17) at 1AM. The primary swell is predicted to be 2.3m and 15s period with a secondary swell of 0.4m and 15s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Gunnamatta Beach in the next 16 days are 2.5m 15s and forecast to arrive on Thursday (Jul 16) at 1PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Monday (Jul 20) at 7AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Fri 17th Jul) | 7.5ft (2.3m) 15s |
| Best Surf | 1AM (Fri 17th Jul) | 7.5ft (2.3m) 15s |
| Most Powerful | 1PM (Thu 16th Jul) | 8ft (2.5m) 15s |
Table - best surf conditions forecast for Gunnamatta Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s talk about what’s shaping up for the home break.
This is a solid outlook, with the main action coming from a powerful, long-period SW groundswell. The water temp is sitting pretty average for the time of year, nothing weird going on there. We’ve got a few quality windows, but you’ll have to pick your moment.
The real standout looks like Friday the 17th of July. That’s the one to circle. We’re looking at a solid 7ft SW swell with a very long 16-second period, pumping some serious energy (2570). The morning has a clean cross-offshore breeze from the NNW, fading into a light northerly in the afternoon. Conditions are described as excellent for experienced surfers, which is bang on for a heavy sand-bottom beach break like this. The sets will be a bit more lined up with that period, but it won’t be a straight wall; there’ll be some push. After that, Saturday the 18th still has some decent 6ft leftovers, but it’s a bit lumpier. The afternoon cleans up nicely with a light cross-off, and the swell drops to a more manageable 5ft. It’ll be smaller but fun.
Sunday the 19th drops right off, we’re talking knee-to-waist high from the SW. There’s a clean window on Wednesday the 22nd with absolutely glassy conditions in the afternoon; it won’t be big, but it’ll be smooth. And then, keep an eye on Wednesday the 29th of July. That’s a promising one further out. A clean 5ft swell from the SW with a true *offshore* wind from the NE (gentle breeze). That’s a rare combo here, so if that holds, it could be a golden morning, low tide willing. It’s over a week away, so don’t bet the house on it, but definitely worth watching.
Now, there’s a bit of a messy period from the 24th through to the 26th of July. The swell is big, over 7ft, but the wind is honking from the SW onshore, turning it into a washing machine. That stretch is one for the kite crew, not for a paddle. Then from the 27th, the swell hangs around at 7ft-plus but it’s raw and blown out. The 29th is our last best hope before the wind swings onshore again to finish the run.
Overall, if you’re keen, Friday the 17th is the one to flex on. It’s going to be a proper session. Saturday morning is a gamble, but the 18th arvo is a good backup. Keep an eye on that 29th for a sneaky clean one.
Rusty.
Short Range ForecastMostly dry. Very mild (max 13°C on Wed night, min 10°C on Fri morning). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 15°C on Mon afternoon, min 10°C on Sun morning). Wind will be generally light. | ||||||||||||||||||||
Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wed 22 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SW 14 | SW 15 | SW 15 | SW 15 | SW 16 | SW 16 | SW 15 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 18 | WSW 16 | SW 15 | SW 14 | SW 13 | SW 14 | SW 13 | SW 12 | SW 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2424 | 2746 | 2668 | 2169 | 2354 | 2384 | 1542 | 1154 | 792 | 486 | 379 | 224 | 194 | 532 | 266 | 305 | 261 | 661 | 471 | 373 | 330 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | glassy | cross-off | cross-off | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | glassy |
High Tide | 11:29PM1.47m | 1:04PM1.73m | 00:41AM1.52m | 1:53PM1.78m | 1:46AM1.57m | 2:37PM1.80m | 2:45AM1.60m | 3:18PM1.79m | 3:39AM1.61m | 3:56PM1.76m | 4:30AM1.59m | 4:32PM1.70m | 5:18AM1.54m | 5:07PM1.62m | |||||||
Low Tide | 6:09AM0.04m | 7:05PM0.61m | 7:10AM0.05m | 8:00PM0.47m | 8:05AM0.10m | 8:49PM0.35m | 8:55AM0.18m | 9:35PM0.26m | 9:41AM0.28m | 10:18PM0.20m | 10:25AM0.40m | 10:59PM0.19m | 11:07AM0.52m | ||||||||
 |  | | |  | | |  | | | | |  | | | | | | |  | | |
 | — | 7:33 | — | — | 7:33 | — | — | 7:33 | — | — | 7:31 | — | — | 7:31 | — | — | 7:31 | — | — | 7:31 | — |
 | — | — | 5:17 | — | — | 5:19 | — | — | 5:20 | — | — | 5:20 | — | — | 5:21 | — | — | 5:22 | — | — | 5:22 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — |
Temp °C | 13 | 12 | 13 | 13 | 11 | 13 | 12 | 11 | 13 | 12 | 11 | 14 | 14 | 12 | 15 | 12 | 12 | 15 | 14 | 12 | 12 |
Feels °C | 10 | 9 | 11 | 11 | 9 | 11 | 10 | 8 | 11 | 10 | 8 | 11 | 11 | 7 | 11 | 7 | 8 | 11 | 10 | 11 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 15 | SW 15 | SW 15 | SW 16 | SW 16 | SW 15 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | WSW 16 | SW 15 | SW 14 | SW 13 | SW 14 | SW 13 | SW 12 | SW 12 |
| kJ | 2424 | 2746 | 2668 | 2169 | 2354 | 2384 | 1542 | 1154 | 792 | 486 | 379 | 224 | 167 | 532 | 266 | 305 | 261 | 661 | 471 | 373 | 330 |
Swell 2 Height (m) Direction Period (s) | S 14 | SSW 16 | S 16 | SSW 15 | SSW 17 | S 16 | SSW 14 | SSW 14 | — | — | SW 20 | SW 20 | SW 18 | SSW 10 | SW 12 | E 10 | WSW 16 | S 9 | — | E 10 | E 10 |
| kJ | 134 | 201 | 186 | 72 | 216 | 131 | 68 | 40 | — | — | 63 | 60 | 194 | 20 | 114 | 2 | 25 | 2 | — | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | WSW 20 | SW 20 | SSW 11 | S 16 | E 11 | SE 10 | E 10 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 38 | 97 | 37 | 20 | 2 | 4 | 2 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | NW 3 | NW 3 | NW 3 | NW 3 | — | NW 2 | NW 3 | NNW 3 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 7 | 2 | 1 | 2 | — | 2 | 2 | 2 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 15 | 15 | 15 | 0 | 0 | 0 | 5 | 5 | 0 | 0 | 0 | 0 | 0 | 5 | 5 | 5 | 5 | 0 | 14 | 0 | 0 |
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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