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Cat Bay (Shelly Beach) Surf Forecast
/ VIC – Phillip Island (20 breaks) / Victoria (127 breaks) /
Cat Bay (Shelly Beach) surfForecast / VIC – Phillip Island / Australia
12 Day Weather and Surf, issued 9 pm Sunday 15 Jun 2025 AEST
Best Forecast Surf Conditions for Cat Bay (Shelly Beach) this week:
The surf forecast for Cat Bay (Shelly Beach) over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Jun 20) at 4PM. The primary swell is predicted to be 1.0m and 13s period with a secondary swell of 0.5m and 16s. Another secondary swell of 0.4m and 3s is also forecast. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Cat Bay (Shelly Beach) in the next 12 days are 3.0m 17s and forecast to arrive on Tuesday (Jun 17) at 7AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4PM (Fri 20th Jun) | 3.5ft (1.0m) 13s |
| Best Surf | 4PM (Fri 20th Jun) | 3.5ft (1.0m) 13s |
| Most Powerful | 7AM (Tue 17th Jun) | 10ft (3.0m) 17s |
Table - best surf conditions forecast for Cat Bay (Shelly Beach) over the next 12 days.
Monday 16 | Tuesday 17 | Wednesday 18 | Thursday 19 | Friday 20 | Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | Fri 27 | |||||||||||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  |  |  |  |  |  | |||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 14 | 14 | 12 | 14 | 16 | 15 | 13 | 12 | 12 | 11 | 13 | 13 | 15 | 13 | 13 | 14 | 19 | 18 | 16 | 16 | 15 | 14 | 12 | 11 | 10 | 13 | 13 | 15 | 15 | 14 | 14 | 14 | 14 | 13 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 904 | 622 | 507 | 1750 | 5437 | 8631 | 2320 | 1148 | 814 | 443 | 327 | 324 | 569 | 495 | 508 | 547 | 860 | 1276 | 1211 | 786 | 675 | 2337 | 1279 | 987 | 988 | 3887 | 4908 | 6503 | 8766 | 12603 | 12229 | 5270 | 5430 | 1863 | 1327 | 649 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | on | on | cross- on | cross | cross- on | cross- on | cross- on | on | on | on | on | on | cross- on | cross- on | on | on | on | on | on | cross- on | on | on | on | on | on | cross- on | on | cross | cross | cross- off | cross- off | off | cross | off |
High Tide / height (m) | 2:32AM 1.95 | 3:32PM 2.37 | 3:16AM 1.98 | 4:08PM 2.37 | 4:03AM 2.00 | 4:43PM 2.36 | 4:53AM 2.03 | 5:20PM 2.33 | 5:48AM 2.07 | 6:00PM 2.29 | 6:47AM 2.11 | 6:43PM 2.23 | 7:52AM 2.15 | 7:33PM 2.17 | 8:59AM 2.20 | 8:28PM 2.13 | 10:08AM 2.26 | 9:30PM 2.10 | 11:14AM 2.32 | 10:36PM 2.10 | 12:15PM 2.38 | 11:41PM 2.11 | 1:10PM 2.43 | |||||||||||||
Low Tide / height (m) | 8:50AM 0.30 | 9:41PM 0.80 | 9:30AM 0.33 | 10:20PM 0.71 | 10:12AM 0.39 | 11:00PM 0.61 | 10:57AM 0.49 | 11:42PM 0.50 | 11:46AM 0.61 | 12:28AM 0.39 | 12:40PM 0.75 | 1:19AM 0.29 | 1:41PM 0.88 | 2:14AM 0.20 | 2:48PM 0.98 | 3:14AM 0.14 | 3:57PM 1.02 | 4:16AM 0.08 | 5:06PM 1.01 | 5:19AM 0.05 | 6:11PM 0.95 | 6:19AM 0.04 | ||||||||||||||
Monday 16 | Tuesday 17 | Wednesday 18 | Thursday 19 | Friday 20 | Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | Fri 27 | |||||||||||||||||||||||||
| Sunrise | - | 7:35 | - | - | 7:35 | - | - | 7:35 | - | - | 7:35 | - | - | 7:35 | - | - | 7:35 | - | - | 7:37 | - | - | 7:37 | - | - | 7:37 | - | - | 7:37 | - | - | 7:37 | - | - | 7:37 | - |
| Sunset | - | - | 5:04 | - | - | 5:04 | - | - | 5:04 | - | - | 5:04 | - | - | 5:05 | - | - | 5:05 | - | - | 5:05 | - | - | 5:05 | - | - | 5:06 | - | - | 5:06 | - | - | 5:06 | - | - | 5:07 |
 |  |  |  |  | | |  | |  |  | |  | | | | | | | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | 2 | 4 | 1 | 2 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | 3 | 6 | - | - | - | - | - | 2 | - | - | 1 | 2 | - | - | - | - |
| Temp. °C | 12 | 12 | 13 | 11 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 12 | 10 | 12 | 15 | 14 | 13 | 15 | 14 | 16 | 16 | 13 | 14 | 14 | 14 | 12 | 12 | 12 | 11 | 13 | 13 | 13 | 13 | 13 | 12 | 13 |
| Feels °C (?) | 5 | 1 | 4 | 2 | 3 | 3 | 7 | 7 | 7 | 8 | 4 | 5 | 3 | 8 | 12 | 10 | 7 | 9 | 7 | 9 | 11 | 8 | 8 | 7 | 7 | 4 | 5 | 6 | 9 | 11 | 11 | 12 | 10 | 10 | 11 | 10 |
Short Range Forecast: Moderate rain (total 10mm), heaviest on Mon night. Very mild (max 13°C on Mon afternoon, min 10°C on Sun night). Winds decreasing (strong winds from the WNW on Mon night, light winds from the NNW by Wed afternoon). | Days 3-6 Weather Summary Mostly dry. Very mild (max 15°C on Fri afternoon, min 9°C on Wed night). Mainly fresh winds. | Days 6-9 Weather Summary Light rain (total 9mm), mostly falling on Sun night. Very mild (max 16°C on Sun morning, min 12°C on Sun night). Mainly strong winds. | Long Range Forecast: Light rain (total 5mm), mostly falling on Tue night. Very mild (max 13°C on Wed afternoon, min 11°C on Tue night). Wind will be generally light. | |||||||||||||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Cat Bay (Shelly 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 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 12 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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