Gunnamatta Beach Surf Break

Lat Long: 38.46° S 144.87° E

Gunnamatta Beach Surf Forecast and Surf Report

Issued: 3 am 24 Sep 2026 (local time)

Forecast update in  hr  min

Today's Gunnamatta Beach sea temperature is
13.8°C
1.0° 

Gunnamatta Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Gunnamatta Beach surf forecast from 23 Sep 2026:

  • Best quality surf: Thursday 24 Sep, 7AM (local time) - 5ft (1.5m), 13s period, SW swell with cross-offshore winds.
  • Most powerful swell: Sunday 27 Sep, 4PM (local time) - 7ft (2.1m), 16s period, SW swell with 2,061 kJ wave energy.
  • Next surfable swell (1★+): Thursday 24 Sep, 7AM (local time) - 5ft (1.5m), 13s 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 Thursday (Sep 24) at 7AM. The primary swell is predicted to be 1.5m and 13s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Gunnamatta Beach in the next 16 days are 2.1m 16s and forecast to arrive on Sunday (Sep 27) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 4s period and expected on Wednesday (Sep 30) at 10AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Thu 24th Sep)5ft (1.5m) 13s
Best Surf 7AM (Thu 24th Sep)5ft (1.5m) 13s
Most Powerful 4PM (Sun 27th Sep)7ft (2.1m) 16s

Table - best surf conditions forecast for Gunnamatta Beach over the next 16 days.


Short Range Forecast

Heavy rain (total 38mm), heaviest during Sat morning. Warm (max 23°C on Thu afternoon, min 9°C on Sat morning). Winds increasing (calm on Fri night, strong winds from the S by Sat night).

Days 4-6 Weather Summary

Mostly dry. Very mild (max 19°C on Tue afternoon, min 9°C on Sun night). Winds increasing (light winds from the NE on Mon night, fresh winds from the N by Tue night).

Thursday
24
Friday
25
Saturday
26
Sunday
27
Monday
28
Tuesday
29
Wednesday
30
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
3
2
2
0
2
0
1
0
1
1
3
2
0
3
1
2
1
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.4
SW
13
1.3
SW
13
1.1
SW
12
0.9
SW
12
0.9
SW
12
1.1
SW
13
1.2
SW
14
1.3
SW
13
1.7
SW
18
2
SW
16
2.1
SW
16
1.9
SW
15
1.6
SW
14
1.6
SW
13
1.3
SW
13
0.9
SW
16
1.4
SW
16
1.4
SW
15
1.3
SW
15
1.3
SW
15
1.3
SW
15
Wave Graph
Metric surfscale
Energy kJ
690
543
398
248
248
398
565
553
1761
2053
2061
1542
943
846
563
427
964
868
777
753
724
Wind (km/h)
20
N
10
N
10
NNE
10
N
20
SSW
5
SW
25
SW
15
WSW
45
S
30
SE
30
SSE
25
ESE
15
SE
20
SSE
15
NE
35
N
25
N
30
NNE
40
N
40
N
45
N
Wind State
cross-off
cross-off
off
cross-off
cross-on
glassy
on
on
cross-on
cross
cross
cross-off
cross
cross-on
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
8:48PM1.16m
10:27AM1.29m
10:25PM1.21m
11:19AM1.34m
11:34PM1.34m
12:00PM1.40m
00:27AM1.48m
12:36PM1.46m
1:12AM1.62m
1:11PM1.52m
1:54AM1.74m
1:46PM1.57m
2:35AM1.81m
Low Tide
3:21PM0.87m
3:30AM0.61m
4:38PM0.78m
4:47AM0.59m
5:30PM0.65m
5:47AM0.55m
6:11PM0.50m
6:37AM0.50m
6:49PM0.34m
7:20AM0.46m
7:25PM0.19m
8:00AM0.44m
8:03PM0.07m
part cloud
cloud
cloud
cloud
light rain
light rain
heavy rain
mod rain
rain showers
part cloud
clear
clear
clear
clear
clear
part cloud
cloud
cloud
cloud
part cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:07
6:05
6:05
6:03
6:01
6:00
5:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:16
6:17
6:19
6:20
6:21
6:22
6:22
 mm
2
5
21
9
1
Temp °C
21
23
20
18
15
13
9
10
11
11
10
10
10
10
10
17
19
17
17
19
19
Feels °C
19
20
19
16
12
13
4
6
2
4
2
4
6
5
5
11
13
11
9
13
13
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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