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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 3 pm Wednesday 30 Apr 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 Wednesday (Apr 30) at 10PM. The primary swell is predicted to be 1.2m and 12s period with a secondary swell of 0.1m and 18s. 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 12 days are 3.5m 15s and forecast to arrive on Wednesday (May 07) 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 0.7m 4s period and expected on Wednesday (Apr 30) at 10PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Wed 30th Apr) | 4ft (1.2m) 12s |
| Best Surf | 1AM (Thu 1st May) | 4ft (1.2m) 12s |
| Most Powerful | 4PM (Wed 7th May) | 11ft (3.5m) 15s |
Table - best surf conditions forecast for Cat Bay (Shelly Beach) over the next 12 days.
Wed 30 | Thursday 01 | Friday 02 | Saturday 03 | Sunday 04 | Monday 05 | Tuesday 06 | Wednesday 07 | Thursday 08 | Friday 09 | Saturday 10 | Sunday 11 | Mon 12 | ||||||||||||||||||||||||
| 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 | Night | AM | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  |  |  |  |  |  | |||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 11 | 11 | 12 | 14 | 13 | 13 | 14 | 14 | 13 | 13 | 12 | 12 | 19 | 17 | 16 | 15 | 14 | 14 | 15 | 15 | 15 | 14 | 14 | 13 | 13 | 13 | 12 | 13 | 13 | 12 | 12 | 12 | 12 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 430 | 416 | 288 | 242 | 324 | 506 | 451 | 553 | 911 | 706 | 552 | 316 | 260 | 196 | 708 | 2030 | 2173 | 1925 | 3200 | 3603 | 4786 | 5964 | 4079 | 2630 | 1811 | 1726 | 1387 | 1475 | 1450 | 1240 | 1136 | 761 | 561 | 448 | 383 | 209 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- off | cross- off | off | cross | on | glass | cross- on | on | on | cross- on | on | on | cross- on | on | on | on | on | cross- on | cross- on | cross- on | cross | cross- off | cross | cross | cross- on | cross- on | cross | cross- on | cross- on | cross- off | cross | cross- off | off | cross- off | cross- off |
High Tide / height (m) | 1:32AM 2.32 | 2:39PM 2.68 | 2:22AM 2.36 | 3:26PM 2.65 | 3:11AM 2.35 | 4:12PM 2.57 | 4:00AM 2.29 | 4:57PM 2.45 | 4:49AM 2.19 | 5:41PM 2.32 | 5:40AM 2.06 | 6:25PM 2.19 | 6:35AM 1.93 | 7:11PM 2.07 | 7:38AM 1.84 | 8:00PM 1.97 | 8:48AM 1.80 | 8:52PM 1.89 | 9:59AM 1.84 | 9:47PM 1.85 | 11:03AM 1.93 | 10:40PM 1.84 | 11:56AM 2.04 | |||||||||||||
Low Tide / height (m) | 7:52PM 0.65 | 7:58AM -0.17 | 8:41PM 0.61 | 8:48AM -0.17 | 9:27PM 0.60 | 9:36AM -0.08 | 10:14PM 0.62 | 10:23AM 0.07 | 11:00PM 0.66 | 11:09AM 0.26 | 11:48PM 0.71 | 11:56AM 0.47 | 12:39AM 0.75 | 12:45PM 0.67 | 1:33AM 0.78 | 1:40PM 0.84 | 2:30AM 0.78 | 2:44PM 0.97 | 3:27AM 0.74 | 3:54PM 1.04 | 4:21AM 0.67 | 5:00PM 1.04 | 5:11AM 0.58 | |||||||||||||
Wed 30 | Thursday 01 | Friday 02 | Saturday 03 | Sunday 04 | Monday 05 | Tuesday 06 | Wednesday 07 | Thursday 08 | Friday 09 | Saturday 10 | Sunday 11 | Mon 12 | ||||||||||||||||||||||||
| Sunrise | - | - | 7:00 | - | - | 7:01 | - | - | 7:01 | - | - | 7:03 | - | - | 7:03 | - | - | 7:05 | - | - | 7:05 | - | - | 7:07 | - | - | 7:07 | - | - | 7:09 | - | - | 7:09 | - | - | 7:09 |
| Sunset | 5:32 | - | - | 5:31 | - | - | 5:30 | - | - | 5:29 | - | - | 5:28 | - | - | 5:27 | - | - | 5:25 | - | - | 5:24 | - | - | 5:23 | - | - | 5:22 | - | - | 5:22 | - | - | 5:21 | - | - |
 |  |  | | | | | | | | | | |  | | | | | |  |  | |  | | | |  | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 2 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 15 | 14 | 14 | 14 | 13 | 14 | 17 | 16 | 17 | 20 | 18 | 18 | 21 | 20 | 19 | 22 | 21 | 20 | 22 | 19 | 14 | 14 | 13 | 13 | 14 | 14 | 15 | 16 | 16 | 14 | 16 | 16 | 15 | 15 | 15 | 16 |
| Feels °C (?) | 7 | 9 | 11 | 10 | 10 | 11 | 15 | 12 | 12 | 15 | 13 | 12 | 16 | 14 | 11 | 15 | 13 | 16 | 20 | 12 | 6 | 4 | 5 | 8 | 9 | 10 | 11 | 13 | 13 | 12 | 15 | 15 | 13 | 11 | 11 | 12 |
Short Range Forecast: Mostly dry. Very mild (max 17°C on Fri afternoon, min 11°C on Thu night). Winds decreasing (fresh winds from the SE on Wed afternoon, calm by Fri afternoon). | Days 3-6 Weather Summary Mostly dry. Warm (max 22°C on Mon afternoon, min 15°C on Sat night). Winds increasing (light winds from the N on Sat afternoon, strong winds from the N by Mon night). | Days 6-9 Weather Summary Light rain (total 4mm), mostly falling on Tue night. Warm (max 22°C on Tue afternoon, min 12°C on Thu night). Winds increasing (light winds from the WNW on Tue afternoon, strong winds from the WSW by Wed afternoon). | Long Range Forecast: Mostly dry. Very mild (max 18°C on Mon afternoon, min 13°C on Fri night). Winds increasing (calm on Sat night, fresh winds from the ESE by Mon afternoon). | |||||||||||||||||||||||||||||||||
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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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