
Surf Forecasts:
Gunnamatta Beach surf forecast from 12 Jul 2026:
- Best quality surf: Monday 13 Jul, 10PM (local time) - 16ft (5.0m), 15s period, WSW swell with cross-onshore winds.
- Most powerful swell: Monday 13 Jul, 10PM (local time) - 16ft (5.0m), 15s period, WSW swell with 11,058 kJ wave energy.
- Next surfable swell (1★+): Monday 13 Jul, 10PM (local time) - 16ft (5.0m), 15s period with WSW 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 Monday (Jul 13) at 10PM. The primary swell is predicted to be 5.0m and 15s period with a secondary swell of 4.5m and 16s. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Gunnamatta Beach in the next 16 days are 5.0m 15s and forecast to arrive on Monday (Jul 13) at 10PM. Winds are predicted to be cross-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 Sunday (Jul 19) at 10PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Mon 13th Jul) | 16ft (5.0m) 15s |
| Best Surf | 10PM (Mon 13th Jul) | 16ft (5.0m) 15s |
| Most Powerful | 10PM (Mon 13th Jul) | 16ft (5.0m) 15s |
Table - best surf conditions forecast for Gunnamatta Beach over the next 16 days.
Gunnamatta Beach, it’s a bit of a mixed bag for the next couple of weeks. The first few days are a write-off with strong winds and messy, blown-out conditions, so we’re looking at a gap of about 4 days with no real surf to speak of. The real action starts to build from Thursday the 16th onwards, and there’s some solid groundswell on the way.
The first standout is Thursday the 16th afternoon. After a few days of punishment, the wind drops right out and goes glassy, and we’ve got a clean 7ft SW swell rolling in at 15 seconds. That’s proper groundswell energy, and the combined energy is sitting at 2212 (moderate-strong), so there’s some push behind it. The water temp is about 58°F, which is pretty normal for this time of year, nothing weird going on there. This one’s for the experienced crew – it’s not a beginner wave at that size.
Friday the 17th is the pick of the bunch. Morning sees a light NNW cross-off breeze with a 8ft SW swell at 16 seconds, and the combined energy is up at 2870 (strong). The afternoon goes dead glassy with a 7ft SW swell at 16 seconds. This is textbook, clean, lined-up surf. Gunnamatta Beach is a classic exposed beach break, so with that long period (16 seconds) it might be a bit straighter on the shore, but when it’s clean like this, it’s a session to remember. Crowds are often here, so expect company.
Saturday the 18th holds clean with a north breeze and dropping swell – 5ft in the morning, 5ft in the afternoon, both SW and still decent period. The energy drops into the hundreds (961 and 632) but it’s clean and fun for the weekend.
After that, there’s a few average days, but the next real standout rolls in on Friday the 24th morning. We’ve got a very long period SSW groundswell at 20 seconds, but only 3ft. The combined energy is 757 (moderate), so it’s not a lot of water moving, but that period is incredible. Clean, light cross-off wind. That’s a point break or reef wave kind of day, not a beach break power session, but for a snapper or a patient surfer, it’s a treat.
Then Saturday the 25th afternoon brings another solid offering: 7ft SW swell at 16 seconds, clean with a light north cross-off breeze, energy at 2174 (strong). That’s another excellent day for experienced surfers. The week after that looks a bit messy again with lumpy cross-shore winds, so the sweet spot is definitely the 16th through the 25th.
Rusty.
Short Range ForecastLight rain (total 9mm), mostly falling on Sun afternoon. Very mild (max 14°C on Mon morning, min 9°C on Wed morning). Winds decreasing (strong winds from the NW on Sun night, light winds from the W by Wed morning). | Days 5-7 Weather SummaryMostly dry. Very mild (max 14°C on Thu afternoon, min 9°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Sun 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | WSW 13 | SW 13 | SW 15 | SW 16 | WSW 15 | SW 16 | WSW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 15 | SW 15 | SW 16 | SW 16 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 |
Wave Graph | |||||||||||||||||||||
3141 | 3122 | 5495 | 6490 | 9124 | 5788 | 6482 | 4422 | 2708 | 2065 | 1618 | 1804 | 2038 | 2010 | 2702 | 2157 | 1500 | 961 | 632 | 431 | 321 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross | on | on | cross-on | glassy | glassy | cross-off | glassy | off | cross-off | cross-off | cross-off | cross-off |
High Tide | 7:47PM1.45m | 9:53AM1.56m | 8:55PM1.43m | 11:04AM1.61m | 10:11PM1.43m | 12:08PM1.67m | 11:29PM1.47m | 1:04PM1.73m | 00:41AM1.52m | 1:53PM1.78m | 1:46AM1.57m | 2:37PM1.80m | 2:45AM1.60m | ||||||||
Low Tide | 2:45AM0.10m | 3:36PM0.85m | 3:54AM0.08m | 4:53PM0.82m | 5:03AM0.05m | 6:04PM0.74m | 6:09AM0.04m | 7:05PM0.61m | 7:10AM0.05m | 8:00PM0.47m | 8:05AM0.10m | 8:49PM0.35m | 8:55AM0.18m | ||||||||
— | — | 7:35 | — | — | 7:35 | — | — | 7:35 | — | — | 7:33 | — | — | 7:33 | — | — | 7:33 | — | — | 7:31 | |
5:15 | — | — | 5:15 | — | — | 5:16 | — | — | 5:16 | — | — | 5:17 | — | — | 5:19 | — | — | 5:20 | — | 5:20 | |
mm | 3 | 1 | — | 1 | 3 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 13 | 14 | 14 | 13 | 13 | 14 | 13 | 11 | 13 | 13 | 13 | 14 | 14 | 11 | 11 | 11 | 10 | 14 | 13 | 12 |
Feels °C | 5 | 3 | 5 | 5 | 6 | 6 | 8 | 6 | 9 | 9 | 9 | 10 | 13 | 13 | 9 | 10 | 10 | 7 | 11 | 10 | 7 |
Swell 1 Height (m) Direction Period (s) | WSW 13 | SW 13 | SW 15 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 15 | SW 15 | SW 16 | SW 16 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 |
3141 | 3122 | 5495 | 6490 | 8258 | 5788 | 5090 | 4422 | 2708 | 2065 | 1618 | 1804 | 2038 | 2010 | 2702 | 2157 | 1500 | 961 | 632 | 431 | 321 | |
Swell 2 Height (m) Direction Period (s) | — | — | SSW 17 | S 15 | SSW 17 | SSW 17 | — | — | SSW 15 | — | S 14 | S 16 | S 16 | SSW 18 | SSW 17 | SSW 16 | SSW 15 | — | — | SW 23 | SW 21 |
— | — | 166 | 118 | 304 | 224 | — | — | 46 | — | 37 | 129 | 174 | 102 | 168 | 84 | 44 | — | — | 21 | 69 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | SSW 20 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 11 |
— | — | — | 76 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 21 | |
Wind waves Height (m) Direction Period (s) | — | WNW 5 | NW 5 | NW 5 | WSW 15 | — | WSW 15 | — | — | — | — | — | — | — | — | — | — | — | — | — | NNW 2 |
— | 71 | 102 | 102 | 9124 | — | 6482 | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 698 | 77 | 281 | 843 | 45 | 46 | 17 | 37 | 17 | 22 | 15 | 14 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 |
Best forecast wave conditions in Mornington Peninsula | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.











