Surf Forecasts:
Gunnamatta Beach surf forecast from 17 Sep 2026:
- Best quality surf: Monday 21 Sep, 10PM (local time) - 10ft (3.0m), 15s period, SW swell with cross-onshore winds.
- Most powerful swell: Tuesday 22 Sep, 1PM (local time) - 10ft (3.0m), 16s period, SW swell with 5,147 kJ wave energy.
- Next surfable swell (1★+): Saturday 19 Sep, 10PM (local time) - 6ft (1.8m), 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 Saturday (Sep 19) at 10PM. The primary swell is predicted to be 1.8m and 12s period with a secondary swell of 0.3m and 16s. 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 16s and forecast to arrive on Tuesday (Sep 22) at 1PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Sunday (Sep 20) at 4PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Sat 19th Sep) | 6ft (1.8m) 12s |
| Best Surf | 10PM (Mon 21st Sep) | 10ft (3.0m) 15s |
| Most Powerful | 1PM (Tue 22nd Sep) | 10ft (3.0m) 16s |
Table - best surf conditions forecast for Gunnamatta Beach over the next 16 days.
Short Range ForecastMostly dry. Warm (max 20°C on Fri afternoon, min 8°C on Thu night). Winds decreasing (strong winds from the NW on Fri night, calm by Sat night). | Days 4-6 Weather SummarySome drizzle, heaviest during Sun night. Warm (max 23°C on Sun afternoon, min 10°C on Sun night). Winds decreasing (strong winds from the N on Sun morning, light winds from the N by Tue night). | ||||||||||||||||||||
Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | |||||||||||||||
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 14 | SW 14 | SW 14 | SW 14 | SW 16 | SW 14 | SW 13 | SW 13 | SW 12 | SW 15 | SW 14 | SW 12 | SW 12 | SW 14 | SW 15 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1956 | 1595 | 1737 | 1233 | 2384 | 1929 | 1847 | 1494 | 959 | 1441 | 1107 | 1993 | 3248 | 3853 | 4153 | 5022 | 4523 | 2372 | 1484 | 1029 | 852 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross | cross | cross | cross | cross | on | cross-off | cross-off | cross-off | on | on | on | cross-on | cross-off | cross | off | cross-off | glassy | cross-off |
High Tide | 3:24PM1.60m | 4:13AM1.66m | 3:55PM1.55m | 4:48AM1.58m | 4:25PM1.49m | 5:25AM1.50m | 4:56PM1.42m | 6:06AM1.41m | 5:29PM1.34m | 6:56AM1.33m | 6:10PM1.26m | 8:00AM1.27m | 7:12PM1.18m | ||||||||
Low Tide | 9:45PM0.14m | 10:08AM0.53m | 10:18PM0.19m | 10:41AM0.60m | 10:52PM0.27m | 11:14AM0.68m | 11:28PM0.35m | 11:52AM0.77m | 00:08AM0.43m | 12:39PM0.84m | 00:59AM0.52m | 1:48PM0.89m | 2:07AM0.58m | ||||||||
 |  |  | | |  | | | | | |  | | | | | | | |  | | |
 | 6:18 | — | — | 6:16 | — | — | 6:16 | — | — | 6:13 | — | — | 6:13 | — | — | 6:11 | — | — | 6:09 | — | — |
 | — | 6:10 | — | — | 6:12 | — | — | 6:13 | — | — | 6:14 | — | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 10 | 10 | 10 | 17 | 20 | 17 | 18 | 16 | 16 | 22 | 23 | 16 | 11 | 11 | 11 | 11 | 12 | 12 | 18 | 21 | 17 |
Feels °C | 6 | 6 | 6 | 11 | 14 | 10 | 14 | 13 | 13 | 12 | 15 | 10 | 3 | 3 | 5 | 6 | 6 | 8 | 16 | 20 | 14 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 14 | SW 14 | SW 16 | SW 14 | SW 13 | SW 13 | SW 12 | SW 15 | SW 14 | — | SW 12 | SW 14 | SW 15 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 |
| kJ | 1956 | 1595 | 1737 | 1233 | 2384 | 1929 | 1847 | 1494 | 959 | 1441 | 1107 | — | 3248 | 3853 | 4153 | 5022 | 4523 | 2372 | 1484 | 1029 | 852 |
Swell 2 Height (m) Direction Period (s) | SSW 13 | — | S 14 | SW 18 | SW 16 | S 14 | — | — | S 16 | S 15 | S 16 | — | — | SSW 15 | S 16 | SSW 18 | SSW 16 | ESE 4 | S 13 | — | E 3 |
| kJ | 60 | — | 107 | 679 | 813 | 93 | — | — | 127 | 172 | 124 | — | — | 296 | 516 | 808 | 432 | 7 | 90 | — | 4 |
Swell 3 Height (m) Direction Period (s) | — | — | SW 20 | S 17 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 104 | 220 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | NW 3 | NW 4 | NW 4 | NW 4 | — | — | N 4 | NNW 5 | SW 12 | — | — | — | — | — | E 4 | — | — | — |
| kJ | — | — | — | 9 | 15 | 35 | 24 | — | — | 42 | 56 | 1993 | — | — | — | — | — | 19 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 46 | 17 | 14 | 16 | 17 | 90 | 46 | 23 | 5 | 51 | 54 | 490 | 703 | 490 | 23 | 23 | 135 | 0 | 5 | 0 | 0 |
Best forecast wave conditions in Mornington Peninsula | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Gunnamatta Beach surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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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