Surf Forecasts:
Cudmirrah Reef surf forecast from 18 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 7PM (local time) - 3ft (0.9m), 6s period, E swell with cross-offshore winds.
- Most powerful swell: Wednesday 19 Aug, 7PM (local time) - 4.5ft (1.4m), 5s period, ENE swell with 110 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 7PM (local time) - 3ft (0.9m), 6s period with E swell.
Best Forecast Surf Conditions for Cudmirrah Reef this week:
The surf forecast for Cudmirrah Reef over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 18) at 7PM. The primary swell is predicted to be 0.4m and 13s period with a secondary swell of 0.4m and 10s. Another secondary swell of 0.9m and 6s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Cudmirrah Reef in the next 16 days are 1.4m 5s and forecast to arrive on Wednesday (Aug 19) at 7PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Thursday (Aug 20) at 1AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Tue 18th Aug) | 3ft (0.9m) 6s |
| Best Surf | 7PM (Tue 18th Aug) | 3ft (0.9m) 6s |
| Most Powerful | 7PM (Wed 19th Aug) | 4.5ft (1.4m) 5s |
Table - best surf conditions forecast for Cudmirrah Reef over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a good look at what’s coming our way at Cudmirrah Reef.
Honestly, for the next couple of weeks, it’s a bit of a slow burn. We’ve got a long stretch of tiny, weak swell and ordinary conditions to work through before anything with real punch shows up. The first real standout doesn’t arrive until the very end of August, so you’ll need some patience.
The immediate forecast is pretty grim. Tuesday the 18th starts off with a tiny 2ft south swell, but it’s glassy in the morning – that’s the only small mercy. The combined swell energy is weak (108). The water’s sitting at 63°F, which is bang on average for this time of year. After that, we’re stuck in a rut. From Wednesday the 19th all the way through to Sunday the 30th, it’s just day after day of knee-high mush. Swell heights mostly hover around 1.0ft to 2ft, periods are short, and the energy readings are pathetically low (often below 100). Winds are a mix of cross and onshore, keeping things messy. You’ll see a few clean pockets, like Thursday the 27th morning with a glassy 2ft wave, but it’s still too small to get excited about. This is a full-on flat spell.
Then, things finally change on Monday the 31st of August. A solid southerly groundswell pushes in, and it builds fast. Monday morning sees 8ft swell from the south, and by the afternoon it’s pumping at 10ft with a period of 10 seconds. The combined energy jumps to a strong 3339. Winds are cross-offshore from the west, which should keep it reasonably clean for such a big swell. This is a serious step up, but at 10ft, this is expert territory only. It’s a powerful, heavy reef break, so only the experienced crew should be looking at this.
That south swell hangs around for Tuesday the 1st of September, still a solid 10ft, but the wind shifts cross and onshore, making it less appealing. The energy remains very strong (1536 and 1343).
The standout window, the one to circle on the calendar, is Wednesday the 2nd of September. The swell drops to a still-chunky 6ft from the southeast, with a period of 10 seconds. The energy is still moderate-strong (1002). But the key here is the wind – a complete glass-off. Zero wind. This will make for clean, lined-up sets at the reef. It’s flagged for excellent conditions for experienced surfers. This is your best bet in the whole 16-day window. Given how rare a good day has been, this Wednesday morning is the one to aim for. The afternoon looks like it’ll get a bit chopped up as a light cross-shore fills in, so make the most of the morning.
So, in short: don’t bother for the first 13 days. Wait for the 31st if you’re an expert and like it big, but the real gem is the morning of the 2nd of September.
Rusty.
Short Range ForecastSome drizzle, heaviest during Thu afternoon. Warm (max 20°C on Thu morning, min 13°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Fri morning, min 11°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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 | E 6 | ESE 11 | ESE 10 | ENE 5 | NE 6 | NE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | NE 6 | NE 6 | S 8 | S 4 | S 16 | S 9 | S 10 | S 10 | S 9 | S 9 |
Wave Graph | |||||||||||||||||||||
55 | 53 | 74 | 59 | 99 | 46 | 26 | 21 | 25 | 34 | 30 | 19 | 12 | 12 | 6 | 45 | 43 | 45 | 47 | 43 | 37 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross | off | cross-off | cross | cross-off | off | cross-off | off | cross-off | cross-on | cross-off | glassy | cross-on | off | glassy | cross | off | off | off | glassy |
High Tide | 12:11PM1.30m | 00:25AM1.04m | 12:58PM1.27m | 1:23AM0.93m | 1:52PM1.25m | 2:35AM0.86m | 2:54PM1.24m | 3:55AM0.84m | 3:57PM1.26m | 5:02AM0.87m | 4:54PM1.31m | 5:53AM0.92m | 5:42PM1.37m | ||||||||
Low Tide | 6:35PM0.42m | 6:20AM0.42m | 7:40PM0.46m | 7:03AM0.49m | 8:53PM0.48m | 7:57AM0.55m | 10:07PM0.47m | 9:03AM0.58m | 11:09PM0.42m | 10:09AM0.56m | 11:58PM0.36m | 11:07AM0.52m | 00:38AM0.30m | ||||||||
6:35 | — | — | 6:33 | — | — | 6:33 | — | — | 6:31 | — | — | 6:31 | — | — | 6:30 | — | — | 6:28 | — | — | |
— | 5:27 | — | — | 5:28 | — | — | 5:29 | — | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — | — | 5:31 | — | |
mm | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | 8 |
Temp °C | 16 | 16 | 14 | 19 | 17 | 16 | 20 | 18 | 16 | 19 | 18 | 15 | 17 | 16 | 14 | 18 | 17 | 14 | 23 | 21 | 15 |
Feels °C | 13 | 13 | 12 | 15 | 14 | 13 | 19 | 16 | 13 | 17 | 16 | 12 | 15 | 14 | 13 | 15 | 14 | 12 | 20 | 19 | 12 |
Swell 1 Height (m) Direction Period (s) | ESE 6 | S 10 | E 7 | ESE 6 | E 10 | NE 6 | NE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | NE 6 | S 8 | S 8 | S 4 | S 6 | S 9 | NE 5 | S 10 | S 9 | S 9 |
44 | 48 | 53 | 42 | 48 | 46 | 26 | 21 | 25 | 34 | 30 | 19 | 12 | 12 | 6 | 11 | 43 | 18 | 47 | 43 | 37 | |
Swell 2 Height (m) Direction Period (s) | S 11 | ESE 13 | ESE 11 | ESE 10 | S 8 | SE 9 | ESE 8 | ESE 7 | S 12 | S 11 | S 5 | S 4 | NE 6 | NE 6 | ESE 4 | S 16 | E 15 | S 10 | NE 5 | NE 8 | NE 9 |
55 | 35 | 74 | 59 | 5 | 39 | 26 | 9 | 3 | 2 | 2 | 2 | 9 | 5 | 2 | 45 | 4 | 45 | 6 | 9 | 19 | |
Swell 3 Height (m) Direction Period (s) | ESE 10 | E 10 | S 10 | S 8 | SE 15 | E 11 | E 11 | E 6 | E 10 | E 9 | S 10 | S 9 | SE 7 | E 9 | ENE 6 | S 8 | E 15 | ENE 9 | NE 8 | S 16 | NE 4 |
9 | 7 | 29 | 11 | 8 | 2 | 2 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 12 | 4 | 8 | 11 | 5 | 5 | |
Wind waves Height (m) Direction Period (s) | — | E 6 | NE 4 | — | ENE 5 | NNE 5 | N 2 | NW 3 | NW 2 | WSW 3 | — | WSW 2 | SW 3 | S 4 | — | — | NE 3 | NNE 5 | WNW 3 | NE 5 | — |
— | 53 | 16 | — | 99 | 78 | 1 | 2 | 1 | 1 | — | 1 | 2 | 7 | — | — | 12 | 37 | 2 | 8 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 51 | 0 | 0 | 373 | 0 | 2 | 56 | 50 | 50 | 52 | 178 | 74 | 593 | 178 | 0 | 146 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in South Coast - New South Wales | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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Information about the Cudmirrah Reef Surf forecast
The above surf forecast table for Cudmirrah Reef provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Cudmirrah Reef can be found by selecting the local surf guide option on the grey menu. Our Cudmirrah Reef 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 (Cudmirrah Reef) 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 Cudmirrah Reef 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.
Are you planning a holiday in South Coast - New South Wales? If you are looking for accommodation near Cudmirrah Reef, camping, hotels and holiday cottages in South Coast - New South Wales, consider staying in Nowra which is 34 km (21 miles) away. Other places in and around South Coast - New South Wales where you can find information about places to rent, and car hire include Port Kembla which is 82 km (51 miles) away, Wollongong and Goulburn.











