Surf Forecasts:
Gunnamatta Beach surf forecast from 31 Jul 2026:
- Best quality surf: Thursday 6 Aug, 7PM (local time) - 4.5ft (1.4m), 16s period, SW swell with glassy winds.
- Most powerful swell: Monday 3 Aug, 4PM (local time) - 10ft (3.0m), 14s period, WSW swell with 3,334 kJ wave energy.
- Next surfable swell (1★+): Friday 31 Jul, 4PM (local time) - 4.5ft (1.3m), 12s 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 31) at 4PM. The primary swell is predicted to be 1.3m and 12s period with a secondary swell of 0.4m and 20s. 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 3.0m 14s and forecast to arrive on Monday (Aug 03) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Sunday (Aug 02) at 10AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4PM (Fri 31st Jul) | 4.5ft (1.3m) 12s |
| Best Surf | 7PM (Thu 6th Aug) | 4.5ft (1.4m) 16s |
| Most Powerful | 4PM (Mon 3rd Aug) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Gunnamatta Beach over the next 16 days.
The Lowdown
Alright, folks. Rusty here. Let’s break down what’s brewing at Gunnamatta Beach. It’s a bit of a mixed bag, but a couple of windows will get you stoked.
The forecast starts with a slow grind. Friday the 31st of July is a no-go – a 5ft SW swell but the wind is messy, the energy is weak (776), and the conditions are just marginal. Not worth it. Saturday the 1st of August looks a bit better. The morning is clean with a 4ft SW swell and cross-off breezes, but the afternoon is the real deal. That 7ft SW groundswell (17 seconds) with clean, cross-off winds is going to be solid, even though the energy is moderate (2430). The water temp is 57°, which is about average for this time of year, so you’ll be fine in a good wetsuit.
Sunday the 2nd of August is a weird one. The swell is solid at 6ft with a 16-second period, but the wind is ripping from the north at 22 mph. It’s cross-off, but that fresh breeze will mess it up. The energy is moderate (1990), but it’s not going to be pretty. Skip it. Monday the 3rd of August is similar – strong wind and a 5ft SW swell, but the quality is just not there.
Then we hit a rough patch. From Tuesday the 4th of August through to Wednesday the 5th, the wind is howling onshore, and the swell is either too big or too messy. It’s a kite-surfing setup, not a paddler’s dream. Thursday the 6th of August sees a slight reprieve. The morning is weak (3ft, 519 energy), but the afternoon is a gem. Glassy conditions, a 4ft SW groundswell with a 16-second period, and the energy is moderate (723). That’s the best we’ve seen in a while.
Friday the 7th of August is the real highlight. The morning has a 5ft SW groundswell and clean cross-off winds, with moderate energy (1732). The afternoon is even better: 6ft SW swell, 17-second period, light breeze, and the energy is strong (1960). This is the best on offer for the whole forecast. The waves will be clean, powerful, and well-shaped, but with that long period, it’ll be breaking a bit straight on the beach. It’s a great session for experienced surfers.
Saturday the 8th of August is another bust. The wind is a strong breeze, and the swell is inconsistent. Sunday the 9th of August is similar – the swell is there (6ft to 7ft) but the wind is terrible. Monday the 10th of August is a monster. The morning has a 13ft WSW swell with an 18-second period, and the energy is massive (16085). That’s too big for Gunnamatta Beach – unless you’re a pro, stay out. The afternoon is still huge at 10ft. The rest of the week is a washout with onshore winds and messy conditions.
Summary: The standout is Friday the 7th of August, especially the afternoon. The 6ft SW groundswell with clean winds and strong energy (1960) is your best bet. Saturday the 1st of August afternoon is a close second with that 7ft SW swell. The rest of the period is either blown out, too big, or just plain ugly.
Rusty.
Short Range ForecastSome drizzle, heaviest during Sun night. Very mild (max 15°C on Sun afternoon, min 9°C on Fri morning). Winds increasing (calm on Fri afternoon, fresh winds from the N by Sun morning). | Days 4-6 Weather SummaryModerate rain (total 13mm), heaviest on Mon afternoon. Very mild (max 13°C on Tue afternoon, min 9°C on Mon night). Winds decreasing (strong winds from the SW on Tue afternoon, light winds from the SW by Wed night). | ||||||||||||||||||||
Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | |||||||||||||||
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) | SW 12 | SW 12 | SW 12 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | WSW 14 | SW 13 | SW 11 | SW 10 | SW 11 | SW 10 | SW 14 | SW 13 | SW 16 | SW 16 | SW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 695 | 503 | 494 | 437 | 2274 | 2700 | 1855 | 1392 | 1123 | 1006 | 3334 | 1915 | 1867 | 954 | 629 | 451 | 706 | 459 | 306 | 834 | 1171 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross-on | cross-on | on | on | on | on | on | on | cross-on | cross-off |
High Tide | 1:27PM1.54m | 1:02AM1.29m | 2:01PM1.59m | 1:50AM1.36m | 2:31PM1.63m | 2:33AM1.42m | 2:59PM1.65m | 3:14AM1.49m | 3:27PM1.65m | 3:54AM1.54m | 3:55PM1.64m | 4:35AM1.58m | 4:25PM1.62m | ||||||||
Low Tide | 7:36PM0.70m | 7:18AM0.34m | 8:12PM0.59m | 7:59AM0.34m | 8:45PM0.49m | 8:37AM0.35m | 9:15PM0.40m | 9:14AM0.38m | 9:45PM0.30m | 9:50AM0.43m | 10:17PM0.22m | 10:28AM0.49m | 10:52PM0.16m | ||||||||
 |  |  | | | | | |  |  |  | |  | | | | | | | | | |
 | 7:22 | — | — | 7:22 | — | — | 7:20 | — | — | 7:20 | — | — | 7:18 | — | — | 7:18 | — | — | 7:16 | — | — |
 | — | 5:30 | — | — | 5:30 | — | — | 5:31 | — | — | 5:31 | — | — | 5:32 | — | — | 5:34 | — | — | 5:35 | — |
mm | — | — | — | — | — | — | — | — | 1 | — | 4 | 4 | 2 | 1 | — | 1 | — | 1 | — | — | — |
Temp °C | 10 | 12 | 12 | 11 | 14 | 12 | 13 | 15 | 13 | 10 | 11 | 11 | 12 | 13 | 13 | 12 | 12 | 12 | 13 | 13 | 13 |
Feels °C | 8 | 10 | 11 | 6 | 9 | 6 | 6 | 8 | 6 | 2 | 3 | 4 | 5 | 5 | 7 | 8 | 6 | 7 | 9 | 10 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 12 | SW 12 | SW 12 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | — | SW 17 | SW 16 | SW 12 | SW 11 | SW 10 | SW 19 | SW 13 | SW 12 | SW 16 | SW 15 |
| kJ | 695 | 503 | 494 | 437 | 2274 | 2700 | 1855 | 1392 | 1123 | 1006 | — | 243 | 95 | 341 | 629 | 451 | 347 | 459 | 256 | 834 | 1171 |
Swell 2 Height (m) Direction Period (s) | SW 21 | SW 20 | SW 19 | SW 18 | S 18 | SSW 17 | S 16 | SSW 16 | SSW 15 | S 14 | — | — | — | S 16 | S 6 | SW 20 | SW 19 | SW 17 | SW 16 | SSW 16 | WSW 11 |
| kJ | 72 | 137 | 130 | 432 | 156 | 216 | 135 | 90 | 76 | 37 | — | — | — | 5 | 30 | 239 | 350 | 427 | 306 | 25 | 218 |
Swell 3 Height (m) Direction Period (s) | S 21 | S 20 | S 19 | SSW 17 | — | — | — | — | WSW 20 | — | — | — | — | — | SW 21 | SW 13 | SSW 14 | SSW 17 | S 8 | S 8 | SSW 17 |
| kJ | 9 | 8 | 7 | 59 | — | — | — | — | 75 | — | — | — | — | — | 274 | 144 | 20 | 29 | 5 | 5 | 57 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | N 3 | N 4 | N 4 | N 4 | WNW 4 | WSW 14 | SW 13 | SW 11 | SW 10 | SW 9 | — | SW 14 | — | — | — | — |
| kJ | — | — | — | — | — | 5 | 18 | 14 | 13 | 43 | 3334 | 1915 | 1867 | 954 | 447 | — | 706 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 5 | 0 | 0 | 14 | 5 | 14 | 37 | 37 | 29 | 49 | 60 | 49 | 46 | 149 | 45 | 37 | 49 | 37 | 23 | 6 | 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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