Surf Forecasts:
Butterbox surf forecast from 20 Sep 2026:
- Best quality surf: Sunday 20 Sep, 7PM (local time) - 2ft (0.6m), 18s period, S swell with offshore winds.
- Most powerful swell: Monday 21 Sep, 10PM (local time) - 10ft (3.0m), 10s period, S swell with 1,924 kJ wave energy.
- Next surfable swell (1★+): Sunday 20 Sep, 7PM (local time) - 2ft (0.6m), 18s period with S swell.
Best Forecast Surf Conditions for Butterbox this week:
The surf forecast for Butterbox over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Sep 20) at 7PM. The primary swell is predicted to be 0.6m and 18s period with a secondary swell of 0.7m and 4s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Butterbox in the next 16 days are 3.0m 10s and forecast to arrive on Monday (Sep 21) at 10PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.0m 6s period and expected on Thursday (Sep 24) at 7PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Sun 20th Sep) | 2ft (0.6m) 18s |
| Best Surf | 7PM (Sun 20th Sep) | 2ft (0.6m) 18s |
| Most Powerful | 10PM (Mon 21st Sep) | 10ft (3.0m) 10s |
Table - best surf conditions forecast for Butterbox over the next 16 days.
Short Range ForecastModerate rain (total 15mm), heaviest on Tue night. Warm (max 28°C on Mon morning, min 14°C on Mon afternoon). Winds increasing (light winds from the NNW on Sun morning, fresh winds from the SSE by Mon morning). | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Wed morning. Warm (max 23°C on Fri night, min 16°C on Wed morning). Winds decreasing (fresh winds from the NE on Wed afternoon, light winds from the NNW by Fri night). | ||||||||||||||||||||
Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | Saturday 26 | |||||||||||||||
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 10 | S 18 | S 17 | S 11 | SSE 6 | S 10 | SSE 8 | SSE 10 | S 18 | ENE 6 | S 11 | S 11 | ENE 6 | NE 6 | S 10 | ENE 6 | S 9 | S 9 | S 8 | ENE 7 | ENE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 133 | 159 | 147 | 114 | 284 | 1506 | 264 | 551 | 236 | 126 | 155 | 116 | 75 | 229 | 30 | 103 | 14 | 6 | 5 | 123 | 155 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross-off | cross-off | cross | cross | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross |
High Tide | 3:17PM1.24m | 4:28AM0.91m | 4:18PM1.28m | 5:17AM0.99m | 5:08PM1.34m | 5:57AM1.08m | 5:50PM1.40m | 6:32AM1.18m | 6:30PM1.44m | 7:06AM1.28m | 7:08PM1.46m | 7:40AM1.38m | 7:47PM1.45m | ||||||||
Low Tide | 10:27PM0.44m | 9:41AM0.58m | 11:15PM0.37m | 10:42AM0.52m | 11:53PM0.30m | 11:32AM0.44m | 00:26AM0.23m | 12:16PM0.36m | 00:58AM0.17m | 12:59PM0.29m | 1:29AM0.13m | 1:41PM0.22m | 2:01AM0.11m | ||||||||
 | |  | |  |  | |  |  |  |  | | | | | | | | | |  | |
 | 5:48 | — | — | 5:47 | — | — | 5:45 | — | — | 5:43 | — | — | 5:41 | — | — | 5:41 | — | — | 5:39 | — | — |
 | — | 5:49 | — | — | 5:49 | — | — | 5:50 | — | — | 5:51 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — |
mm | — | — | — | — | — | 2 | — | 2 | 11 | 3 | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 27 | 27 | 25 | 28 | 16 | 14 | 14 | 15 | 16 | 17 | 17 | 17 | 19 | 18 | 17 | 22 | 21 | 23 | 27 | 28 | 16 |
Feels °C | 22 | 22 | 21 | 23 | 11 | 10 | 11 | 14 | 14 | 14 | 13 | 13 | 15 | 14 | 14 | 18 | 18 | 21 | 23 | 24 | 9 |
Swell 1 Height (m) Direction Period (s) | S 10 | S 8 | S 10 | S 11 | NE 6 | S 10 | SSE 8 | SSE 10 | S 10 | S 9 | S 11 | S 11 | S 10 | S 10 | S 10 | S 9 | S 9 | NE 7 | NE 7 | S 10 | ENE 7 |
| kJ | 133 | 66 | 53 | 114 | 1 | 1506 | 264 | 551 | 184 | 111 | 155 | 116 | 75 | 75 | 30 | 15 | 14 | 233 | 106 | 8 | 155 |
Swell 2 Height (m) Direction Period (s) | SSW 4 | S 18 | S 17 | N 3 | E 11 | S 18 | S 11 | E 15 | S 18 | S 16 | S 19 | E 13 | — | E 12 | E 12 | S 15 | S 14 | S 9 | S 8 | S 13 | S 12 |
| kJ | 4 | 159 | 147 | 1 | 2 | 25 | 189 | 4 | 236 | 122 | 7 | 3 | — | 3 | 3 | 4 | 4 | 6 | 5 | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | S 18 | E 11 | S 7 | NE 4 | — | S 21 | S 20 | E 15 | E 11 | — | E 13 | — | — | — | S 16 | — | — | E 11 | E 11 | — | — |
| kJ | 56 | 2 | 15 | 1 | — | 8 | 8 | 4 | 2 | — | 3 | — | — | — | 5 | — | — | 2 | 2 | — | — |
Wind waves Height (m) Direction Period (s) | WNW 2 | NE 4 | NW 3 | WNW 3 | SSE 6 | — | — | — | E 5 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | NE 6 | NE 6 | ENE 6 | NE 6 | NE 7 | NE 7 | ENE 7 | S 4 |
| kJ | 1 | 12 | 1 | 1 | 284 | — | — | — | 75 | 126 | 104 | 81 | 74 | 229 | 175 | 103 | 216 | 316 | 147 | 123 | 48 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 1 | 0 | 0 | 582 | 159 | 0 | 0 | 22 | 22 | 517 | 23 | 186 | 733 | 1 | 1 | 23 | 1 | 1 | 54 | 78 |
Best forecast wave conditions in Sydney North Coast | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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 Butterbox 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 Butterbox Surf forecast
The above surf forecast table for Butterbox provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Butterbox can be found by selecting the local surf guide option on the grey menu. Our Butterbox 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 (Butterbox) 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 Butterbox 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.
Butterbox is 2 km (1 miles) from Dee Why. If you plan a holiday in Sydney North Coast, look for hotels and other accommodation in Dee Why. Dee Why has rooms for a wide range of budgets as well as car hire and transport links.
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