Gunnamatta Beach Surf Break

Lat Long: 38.46° S 144.87° E

Issued: 9 am 03 Jul 2026 (local time)

Forecast update in  hr  min

Today's Gunnamatta Beach sea temperature is
14.7° C

1.1°C warmer than normal for this time of year

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 3 Jul 2026:

  • Best quality surf: Sunday 5 Jul, 4AM (local time) - 10ft (3.0m), 16s period, SSW swell with cross-shore winds.
  • Most powerful swell: Friday 3 Jul, 10PM (local time) - 13ft (4.0m), 14s period, WSW swell with 6,699 kJ wave energy.
  • Next surfable swell (1★+): Sunday 5 Jul, 4AM (local time) - 10ft (3.0m), 16s period with SSW 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 Sunday (Jul 05) at 4AM. The primary swell is predicted to be 3.0m and 16s period with a secondary swell of 1.3m and 16s. The wind is predicted to be cross-shore as the swell arrives.

The most powerful waves expected at Gunnamatta Beach in the next 16 days are 4.0m 14s and forecast to arrive on Friday (Jul 03) 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 1.2m 5s period and expected on Sunday (Jul 05) at 10PM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Sun 5th Jul)10ft (3.0m) 16s
Best Surf 4AM (Sun 5th Jul)10ft (3.0m) 16s
Most Powerful10PM (Fri 3rd Jul)13ft (4.0m) 14s

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


Updates in  hr  min  s Forecast update imminent

Alright mates, here’s the gunnamatta report for the next couple weeks. It’s gonna be a bumpy ride.

First up, Friday 3 July. We’re talking a strong westerly at 30 mph, cross-on, with a 15-foot swell from the WSW, 16-second period. That’s a ton of energy – 9581 – but it’s blown to bits. Messy. Friday afternoon is the same song, a little less wind but still ugly.

Saturday the 4th stays onshore with southwest winds at 18 mph, 10-foot swell from the SW, 13-second period. Garbage conditions.

Sunday morning the 5th gets interesting. We get a 10-foot SSW swell with a very long 17-second period, and the wind shifts to a cross-off easterly at 15 mph – clean lineup. The combined energy is 7116, strong. The report says wind and tide are good, but that wave size is too much for this beach break. That’s expert-only territory. That long period groundswell could be straight and fast – a handful for sure. Sunday afternoon stays clean with the same size.

Monday the 6th is the cleanest early week. Morning has a light north breeze, cross-off, with a 6-foot SW swell and 14-second period. Energy drops to 1383. Clean waves, excellent for experienced surfers. Afternoon gets even better – near glassy with an east-southeast breeze at just 3 mph, 5-foot swell from the SW, 14-second period, energy at 810. This is the standout for the first stretch.

Tuesday the 7th stays clean with a 4-foot SW swell and 16-second period – long period, good shape. Light wind.

Wednesday the 8th, we’re back into poor stuff. A south wind at 15 mph, cross-on, with a 6-foot SW swell, 18-second period. Too long and straight for the beach. Energy 2614 but messy.

The run from Thursday the 9th to Sunday the 12th is your window. Thursday morning has an east cross-off at 12 mph, clean, with a 5-foot SW swell, 15-second period. Thursday afternoon even better – ENE breeze at 9 mph, clean. Friday the 10th is glassy in the afternoon with a north-northwest breeze at 3 mph, 5-foot SW swell. Saturday the 11th stays clean with light winds, 4 to 5-foot swell. Sunday the 12th has a light north-northeast offshore breeze in the afternoon, 4-foot SW swell, 13-second period – excellent for experienced surfers.

Monday the 13th has a fresh offshore north-northeast wind at 18 mph, 6-foot SW swell with 16-second period. Clean but windy. Experienced only.

After that, it’s a long gap of poor. Tuesday the 14th through Friday the 17th is onshore and cross-shore winds, big messy swell. The 14th has a 13-foot SSW short-period swell with onshore wind – ugly. The 15th has an 12-foot SSW swell with cross-off wind at 30 mph, but the comment says poor.

The only later glimmer is the afternoon of Saturday 18 July – 3-foot SW swell, 14-second period, light cross-on breeze at 6 mph. Marginal, but at least the wind is light.

The standout is Gunnamatta Beach on Thursday 9 July afternoon – 5-foot SW swell, 15-second period, clean with a light east-northeast cross-off breeze. Crowds are likely here. Water temp is about 59°, a little warmer than average – a spring suit’ll do.

The good windows are short, surrounded by big windy mess. Not a classic run, but there are some quality moments in the first week to early second week.

Rusty

Short Range Forecast

Light rain (total 3mm), mostly falling on Fri morning. Very mild (max 13°C on Fri morning, min 8°C on Sun night). Winds decreasing (near gales from the WSW on Fri morning, light winds from the NNE by Sun night).

Days 4-6 Weather Summary

Mostly dry. Very mild (max 13°C on Tue night, min 8°C on Wed night). Wind will be generally light.

Friday
3
Saturday
4
Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
!
!
2
4
3
3
4
2
0
0
1
3
3
4
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
4.5
WSW
16
4
SW
16
3.5
WSW
14
3
SW
13
2.5
SW
13
3
SW
15
3
SSW
17
3
SW
16
2.2
SW
16
1.7
SW
14
1.4
SW
14
1.1
SW
13
1.3
SW
16
1.3
SW
16
1.6
SW
15
1.7
SW
18
2.2
SW
18
1.9
SW
16
1.6
SW
15
1.6
SW
15
1.5
SW
15
Wave Graph
Metric surfscale
Energy kJ
9581
8608
5255
2733
2436
3979
5533
4388
2344
1179
810
458
844
897
1048
1871
2888
1832
1200
1011
1014
Wind (km/h)
50
W
45
WSW
30
W
30
WSW
30
SW
25
SSE
25
ESE
30
ESE
30
ENE
10
N
5
ESE
10
N
15
NW
5
WSW
25
S
25
S
20
S
20
E
20
E
15
ENE
10
NE
Wind State
cross-on
cross-on
cross-on
on
on
cross-on
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-on
cross-on
cross-on
cross-on
cross-off
cross-off
cross-off
off
High Tide
2:25PM1.62m
2:02AM1.31m
2:58PM1.64m
2:45AM1.33m
3:29PM1.65m
3:26AM1.36m
3:57PM1.64m
4:08AM1.39m
4:25PM1.62m
4:51AM1.42m
4:55PM1.59m
5:39AM1.46m
5:27PM1.56m
Low Tide
8:37PM0.65m
8:15AM0.30m
9:12PM0.59m
8:52AM0.33m
9:45PM0.53m
9:28AM0.37m
10:16PM0.47m
10:05AM0.42m
10:48PM0.40m
10:44AM0.49m
11:22PM0.32m
11:27AM0.57m
00:01AM0.25m
rain showers
light rain
cloud
cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
cloud
clear
clear
part cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:37
7:37
7:37
7:37
7:37
7:37
7:37
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:09
5:10
5:10
5:12
5:12
5:13
5:14
 mm
2
1
Temp °C
13
13
12
12
12
12
10
11
9
11
12
12
10
12
13
10
11
9
9
12
9
Feels °C
3
4
5
5
5
6
4
4
5
9
10
9
7
9
10
4
6
5
4
8
4
Swell 1
Height (m)
Direction
Period (s)
3
SW
14
0.3
SSW
14
0.4
SSW
14
3
SW
15
3
SSW
17
3
SW
16
2.2
SW
16
1.7
SW
14
1.4
SW
14
1.1
SW
13
1.3
SW
16
1.3
SW
16
1.6
SW
15
1.7
SW
18
2.2
SW
18
1.9
SW
16
1.6
SW
15
1.6
SW
15
1.5
SW
15
Energy kJ
3968
40
65
3979
5533
4388
2344
1179
810
458
844
897
1048
1871
2888
1832
1200
1011
1014
Swell 2
Height (m)
Direction
Period (s)
1.3
SSW
16
1.7
S
17
0.8
S
16
0.9
SSW
15
0.6
ESE
5
0.4
SE
5
0.3
SW
19
0.8
SW
17
0.2
SSW
16
0.3
S
16
1.1
SW
14
0.7
SSW
6
0.8
SSW
7
0.5
S
6
0.4
SSW
15
0.3
SSW
16
Energy kJ
893
1583
334
395
19
6
54
389
26
47
529
34
73
20
85
49
Swell 3
Height (m)
Direction
Period (s)
0.7
SSW
14
0.2
ESE
4
0.5
S
18
0.4
SSW
16
0.3
SSW
16
Energy kJ
204
2
171
90
49
Wind waves
Height (m)
Direction
Period (s)
4.5
WSW
16
4
SW
16
3.5
WSW
14
3
SW
13
2.5
SW
13
1.9
SSW
16
0.9
ESE
4
1.2
ESE
5
0.4
NW
3
0.7
SW
5
0.9
SSW
5
Energy kJ
9581
8608
5255
2733
2436
1762
31
70
2
25
43
Nearest Offshore or Glassy
Rating
(10 max)
3
4
6
5
2
4
5
5
4
4
3
3
4
3
2
1
4
3
4
4
4
Distance (km)
327
752
49
49
473
24
23
25
25
0
0
0
0
14
24
149
23
25
21
0
0
Best forecast wave conditions in Mornington Peninsula
Rating
(10 max)
5
4
4
3
3
4
3
4
4
4
4
Best forecast wave conditions in Australia
Rating
(10 max)
5
5
9
5
5
8
9
5
7
4
9
9
8
4
5
9
4
4
4
4
4
Header Global
Rating
(10 max)
9
5
9
5
6
8
5
9
7
5
9
9
8
6
5
9
9
9
5
5
6
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
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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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