Surf Forecasts:
Shark Island (Cronulla) surf forecast from 13 Sep 2026:
- Best quality surf: Thursday 17 Sep, 7AM (local time) - 11ft (3.5m), 11s period, S swell with offshore winds.
- Most powerful swell: Thursday 17 Sep, 1AM (local time) - 11ft (3.5m), 11s period, S swell with 3,160 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 4AM (local time) - 3ft (0.9m), 7s period with ENE swell.
Best Forecast Surf Conditions for Shark Island (Cronulla) this week:
The surf forecast for Shark Island (Cronulla) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 15) at 4AM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.4m and 10s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Shark Island (Cronulla) in the next 16 days are 3.5m 11s and forecast to arrive on Thursday (Sep 17) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 5s period and expected on Tuesday (Sep 15) at 7PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Tue 15th Sep) | 3ft (0.9m) 7s |
| Best Surf | 7AM (Thu 17th Sep) | 11ft (3.5m) 11s |
| Most Powerful | 1AM (Thu 17th Sep) | 11ft (3.5m) 11s |
Table - best surf conditions forecast for Shark Island (Cronulla) over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s have a look at what’s comin’ up for Shark Island (Cronulla).
Right now, things are flat as a tack. We’ve got a few days of tiny, onshore junk through Monday the 14th and Tuesday the 15th, with swell barely scraping 2ft to 2ft and winds blowing all over the shop. Not worth paddling out for.
Wednesday the 16th is where it finally wakes up, but it’s not for the faint-hearted. A solid 10ft southerly swell rolls in, and the combined energy is strong (1747). That’s proper size for a reef break – only for advanced crew. The morning sees a fresh 22 mph offshore SSW wind, so it’ll be clean and lined up, but the tide might mess with it a bit. Wednesday arvo the wind swings southerly at 25 mph, still cross-off and clean, but that’s big, raw power. Thursday the 17th holds that 10ft S swell, and the energy cranks up even higher (3405). The wind stays cross-off from the SSW at 12 mph, so the wave face should be clean. Again, this is proper heavy, only for the experienced.
Friday the 18th drops back to 4ft from the SSE, but the wind is light and variable in the morning. It’s cross-shore though, and a bit messy. Not a standout.
The real sweet spot in this forecast lands on Monday the 21st. We’ve got a 8ft southerly swell with a 12-second period – that’s quality groundswell. The combined energy is strong (1650). Morning winds are a fresh 19 mph SSE, but they’re cross-off, which keeps the face clean at Shark Island. This is a reef setup, so that longer period should groom into nice, punchy lines. Tuesday the 22nd still has 7ft from the south with an 11-second period (1423 energy), but the wind turns onshore from the NNE, so it’ll be a bit lumpy.
Further out, Monday the 28th sees another pulse of 8ft southerly swell (1463 energy) with cross-off SSE winds at 19 mph in the morning. The arvo of the 28th picks up to 8ft and a 12-second period (2156 energy) with lighter cross-off winds from the SSE. That Tuesday the 29th is big again – 10ft from the SSE with a 12-second period (2269 energy) – but the wind goes onshore from the ENE, so it’ll be choppy and bumpy.
The water temp is sitting at 63°F, which is about 1°F cooler than average for this time of year – nothing wild, just a touch on the chilly side.
If I’m picking one true standout, it’s Monday the 21st morning. That 8ft S groundswell, 12-second period, and clean cross-off wind is the best combo on offer. For the advanced crew, Thursday the 17th morning with 10ft and clean offshore wind is also a cracker, but it’s serious size.
Stay safe out there.
Rusty
Short Range ForecastMostly dry. Warm (max 22°C on Mon afternoon, min 10°C on Tue night). Winds increasing (light winds from the NNW on Mon morning, strong winds from the S by Tue afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Sat morning, min 10°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | S 11 | S 11 | NE 6 | NE 7 | NE 7 | S 9 | S 10 | S 10 | S 11 | S 10 | SSE 10 | SSE 9 | SSE 9 | SSE 9 | S 9 | S 9 | S 9 | S 8 | SSE 8 | S 11 | S 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 86 | 82 | 201 | 49 | 37 | 1228 | 1737 | 1744 | 3160 | 1924 | 842 | 422 | 264 | 238 | 169 | 99 | 74 | 34 | 24 | 10 | 9 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross | cross-off | cross | on | cross-off | cross-off | cross-on | cross | cross | cross-on | cross-off |
High Tide | 10:04AM1.47m | 10:22PM1.25m | 10:41AM1.44m | 11:04PM1.12m | 11:21AM1.39m | 11:51PM1.01m | 12:07PM1.33m | 00:47AM0.92m | 1:03PM1.27m | 2:01AM0.87m | 2:11PM1.24m | 3:25AM0.87m | 3:22PM1.25m | ||||||||
Low Tide | 4:22PM0.24m | 4:19AM0.29m | 5:09PM0.31m | 4:51AM0.38m | 6:00PM0.38m | 5:28AM0.47m | 6:59PM0.45m | 6:13AM0.55m | 8:11PM0.49m | 7:14AM0.60m | 9:27PM0.48m | 8:32AM0.62m | 10:31PM0.44m | ||||||||
 | |  |  | |  | | | | | | | | | | | | | | | | |
 | 5:56 | — | — | 5:56 | — | — | 5:54 | — | — | 5:52 | — | — | 5:50 | — | — | 5:50 | — | — | 5:48 | — | — |
 | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — | — | 5:47 | — | — | 5:49 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 22 | 22 | 20 | 17 | 13 | 13 | 14 | 14 | 14 | 13 | 13 | 19 | 18 | 17 | 24 | 22 | 20 | 28 | 30 | 24 |
Feels °C | 17 | 18 | 19 | 17 | 13 | 6 | 4 | 4 | 5 | 10 | 10 | 12 | 15 | 14 | 15 | 19 | 17 | 17 | 23 | 26 | 18 |
Swell 1 Height (m) Direction Period (s) | NE 6 | S 11 | ENE 6 | NE 7 | NE 7 | NE 7 | NE 12 | NE 12 | ENE 13 | S 10 | SSE 10 | SSE 9 | SSE 9 | SSE 9 | S 9 | S 9 | S 9 | S 8 | SSE 8 | NE 5 | NNE 5 |
| kJ | 40 | 82 | 69 | 49 | 37 | 7 | 6 | 6 | 17 | 1478 | 842 | 422 | 264 | 238 | 169 | 99 | 74 | 34 | 24 | 4 | 3 |
Swell 2 Height (m) Direction Period (s) | S 11 | ENE 13 | SSE 10 | S 9 | S 9 | E 14 | E 15 | E 15 | E 14 | E 13 | E 13 | E 13 | S 18 | SSE 18 | SSE 16 | SSE 17 | SSE 16 | NE 4 | NE 5 | S 8 | S 11 |
| kJ | 86 | 16 | 32 | 15 | 25 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 6 | 61 | 90 | 94 | 51 | 5 | 3 | 5 | 9 |
Swell 3 Height (m) Direction Period (s) | ENE 13 | — | E 12 | E 13 | E 13 | S 16 | — | — | — | — | S 19 | S 19 | E 12 | E 12 | E 12 | ENE 4 | E 12 | S 15 | E 9 | S 11 | E 8 |
| kJ | 17 | — | 12 | 3 | 3 | 5 | — | — | — | — | 7 | 7 | 3 | 3 | 3 | 2 | 3 | 17 | 1 | 10 | 1 |
Wind waves Height (m) Direction Period (s) | — | NE 6 | NE 6 | SW 3 | SE 4 | S 9 | S 10 | S 10 | S 11 | S 10 | — | — | — | — | NNE 3 | — | NE 3 | — | NW 3 | WNW 3 | SSW 4 |
| kJ | — | 49 | 201 | 1 | 10 | 1228 | 1737 | 1744 | 3160 | 1924 | — | — | — | — | 1 | — | 2 | — | 2 | 3 | 15 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1 | 5 | 1 | 0 | 847 | 73 | 860 | 694 | 43 | 0 | 0 | 0 | 1 | 41 | 0 | 0 | 41 | 1 | 42 | 268 | 71 |
Best forecast wave conditions in Sydney South Coast | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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Information about the Shark Island (Cronulla) Surf forecast
The above surf forecast table for Shark Island (Cronulla) provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Shark Island (Cronulla) can be found by selecting the local surf guide option on the grey menu. Our Shark Island (Cronulla) 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 (Shark Island (Cronulla)) 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 Shark Island (Cronulla) 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.
Shark Island (Cronulla) is 2 km (1 miles) from Cronulla. If you plan a holiday in Sydney South Coast, look for hotels and other accommodation in Cronulla. Cronulla has rooms for a wide range of budgets as well as car hire and transport links.
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