Surf Forecasts:
Cat Bay (Shelly Beach) surf forecast from 13 Jun 2026:
- Best quality surf: Sunday 14 Jun, 10AM (local time) - 7ft (2.1m), 13s period, SW swell with cross-offshore winds.
- Most powerful swell: Sunday 14 Jun, 4AM (local time) - 6.5ft (2.0m), 14s period, SW swell with 1,581 kJ wave energy.
- Next surfable swell (1★+): Sunday 14 Jun, 10AM (local time) - 7ft (2.1m), 13s period with SW swell.
Best Forecast Surf Conditions for Cat Bay (Shelly Beach) this week:
The surf forecast for Cat Bay (Shelly Beach) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Jun 14) at 10AM. The primary swell is predicted to be 2.1m and 13s period with a secondary swell of 0.3m and 14s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Cat Bay (Shelly Beach) in the next 16 days are 2.0m 14s and forecast to arrive on Sunday (Jun 14) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Sunday (Jun 14) at 4AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Sun 14th Jun) | 7ft (2.1m) 13s |
| Best Surf | 10AM (Sun 14th Jun) | 7ft (2.1m) 13s |
| Most Powerful | 4AM (Sun 14th Jun) | 6.5ft (2.0m) 14s |
Table - best surf conditions forecast for Cat Bay (Shelly Beach) over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 5mm), mostly falling on Sat night. Very mild (max 17°C on Mon afternoon, min 9°C on Sun night). Winds increasing (light winds from the SSE on Sun afternoon, strong winds from the NNW by Tue morning). | Days 5-7 Weather SummaryModerate rain (total 10mm), heaviest on Thu night. Very mild (max 18°C on Thu afternoon, min 13°C on Thu night). Mainly fresh winds. | ||||||||||||||||||||
Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | Sat 20 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SW 14 | SW 13 | SW 12 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | WSW 16 | WSW 15 | WSW 14 | SW 14 | SW 13 | SW 12 | SW 12 | SW 21 | SW 19 | SW 18 | SW 17 | SW 16 | SW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 992 | 1387 | 1188 | 990 | 546 | 442 | 303 | 282 | 1150 | 1028 | 682 | 418 | 331 | 207 | 187 | 162 | 520 | 995 | 1160 | 793 | 783 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | cross | cross-on | cross-on | cross-on | on | on | on | on | on | cross-on | cross-on | on | on | on | on | cross-on | cross-on | on |
High Tide | 10:26AM2.26m | 9:49PM2.08m | 11:30AM2.37m | 10:54PM2.12m | 12:30PM2.47m | 11:58PM2.18m | 1:25PM2.54m | 1:01AM2.24m | 2:17PM2.58m | 2:02AM2.28m | 3:05PM2.58m | 3:00AM2.28m | 3:50PM2.56m | ||||||||
Low Tide | 3:31AM0.18m | 4:18PM1.02m | 4:33AM0.07m | 5:25PM0.98m | 5:35AM-0.02m | 6:27PM0.90m | 6:35AM-0.08m | 7:25PM0.80m | 7:32AM-0.08m | 8:19PM0.68m | 8:27AM-0.03m | 9:12PM0.56m | 9:19AM0.09m | ||||||||
 |  | |  |  | |  |  | | |  | | | | |  |  | | | | | |
 | — | 7:33 | — | — | 7:33 | — | — | 7:35 | — | — | 7:35 | — | — | 7:35 | — | — | 7:35 | — | — | 7:35 | — |
 | — | — | 5:04 | — | — | 5:04 | — | — | 5:04 | — | — | 5:04 | — | — | 5:04 | — | — | 5:04 | — | — | 5:05 |
mm | 1 | — | — | — | — | — | — | 2 | 2 | — | — | — | — | — | — | 8 | 2 | — | — | — | — |
Temp °C | 13 | 13 | 13 | 11 | 13 | 17 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 17 | 18 | 16 | 15 | 17 | 14 | 16 | 16 |
Feels °C | 8 | 9 | 10 | 7 | 9 | 14 | 10 | 7 | 9 | 10 | 12 | 13 | 14 | 14 | 14 | 11 | 11 | 13 | 9 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 13 | SW 12 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | WSW 16 | WSW 15 | WSW 14 | SW 14 | SW 13 | SW 12 | SW 12 | SW 12 | SW 19 | SW 18 | SW 17 | SW 16 | SW 16 |
| kJ | 992 | 1387 | 1188 | 990 | 546 | 442 | 303 | 282 | 1150 | 1028 | 682 | 418 | 331 | 207 | 187 | 89 | 520 | 995 | 1160 | 793 | 783 |
Swell 2 Height (m) Direction Period (s) | SSW 15 | SSW 14 | — | — | SSW 13 | SSW 12 | SW 22 | WSW 18 | SW 12 | SSW 16 | SSW 6 | SSW 6 | SSW 6 | SE 5 | SW 24 | SW 21 | WSW 12 | SSW 18 | SSW 17 | SSW 16 | SSW 15 |
| kJ | 42 | 41 | — | — | 186 | 111 | 18 | 218 | 142 | 24 | 4 | 7 | 8 | 1 | 22 | 162 | 125 | 176 | 166 | 80 | 76 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | W 22 | SSW 11 | — | — | SSW 14 | — | ESE 6 | ESE 4 | SE 4 | SSW 9 | SSW 19 | W 6 | — | — | — |
| kJ | — | — | — | — | — | — | 9 | 22 | — | — | 19 | — | 3 | 2 | 1 | 8 | 72 | 3 | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 6 | — | — | ENE 3 | — | N 2 | N 3 | NNW 4 | NW 4 | NNW 3 | — | NW 3 | — | N 2 | NNW 3 | N 3 | NNW 3 | NNW 3 | NNW 4 | NNW 4 | NNW 4 |
| kJ | 88 | — | — | 2 | — | 1 | 5 | 16 | 8 | 3 | — | 2 | — | 1 | 3 | 5 | 4 | 3 | 19 | 21 | 11 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 68 | 0 | 0 | 2 | 2 | 2 | 13 | 60 | 31 | 23 | 2 | 2 | 2 | 9 | 2 | 13 | 2 | 2 | 9 | 9 | 2 |
Best forecast wave conditions in Phillip Island | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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Information about the Cat Bay (Shelly Beach) Surf forecast
The above surf forecast table for Cat Bay (Shelly Beach) provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Cat Bay (Shelly Beach) can be found by selecting the local surf guide option on the grey menu. Our Cat Bay (Shelly 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 (Cat Bay (Shelly 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 Cat Bay (Shelly 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.
Cat Bay is 34 km (21 miles) from Mornington. If you plan a holiday in Phillip Island, 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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