Surf Forecasts:
White Rocks surf forecast from 13 Sep 2026:
- Best quality surf: Friday 18 Sep, 1AM (local time) - 11ft (3.5m), 14s period, NW swell with cross-shore winds.
- Most powerful swell: Thursday 17 Sep, 10PM (local time) - 11ft (3.5m), 14s period, NW swell with 5,265 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 1AM (local time) - 2.5ft (0.8m), 10s period with NW swell.
Best Forecast Surf Conditions for White Rocks this week:
The surf forecast for White Rocks over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 14) at 1AM. The primary swell is predicted to be 0.8m and 10s period with a secondary swell of 0.1m and 14s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at White Rocks in the next 16 days are 3.5m 14s and forecast to arrive on Thursday (Sep 17) 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 0.5m 3s period and expected on Thursday (Sep 17) at 1AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Mon 14th Sep) | 2.5ft (0.8m) 10s |
| Best Surf | 1AM (Fri 18th Sep) | 11ft (3.5m) 14s |
| Most Powerful | 10PM (Thu 17th Sep) | 11ft (3.5m) 14s |
Table - best surf conditions forecast for White Rocks over the next 16 days.
The Lowdown
Alright crew, Rusty here with the rundown on the next couple of weeks.
It’s a slow burn to start, but if you can wait, there’s a gem hiding in the second week.
The top pick is White Rocks on Thursday, September 24th. We’re looking at a clean 6ft NW swell with light SSE winds in the morning – that’s as good as it gets for this stretch. The water’s about 59°F, a little warmer than usual for September, but nothing crazy. The energy is solid but not massive at 573 (combined swell energy). It’s the best quality session you’ll find.
First glimpse of anything rideable is Sunday, September 13th afternoon. A 3ft NW groundswell with a 10-second period and light offshore SSE breeze. Clean, but small. The energy is moderate at 200. It’s beginner-friendly, but crowds are possible – listed as “sometimes.”
Monday the 14th is tiny and weak – not worth paddling out. Tuesday the 15th bumps up to 4ft, but the wind goes cross-shore and it gets lumpy. Wednesday and Thursday keep that trend going – bigger swell, but messy winds. By Thursday afternoon the 17th, we’re looking at 10ft NW, but with a 22 mph crosswind – totally blown out.
Friday morning the 18th is a beast: 10ft NW groundswell with a 13-second period and clean offshore wind. Sounds perfect, but it’s way too big for White Rocks. That’s for experts only. The energy is cranking at 2887. Saturday the 19th drops to 4ft, but winds are junk again. Sunday the 20th delivers another monster: 10ft NW with a 14-second period. Same problem – too big. That energy reading of 3488 tells you it’s going to close out hard.
From Monday the 21st to Wednesday the 23rd, we’ve got waist to head-high swell, but winds are mostly cross-shore or onshore. Wednesday the 23rd afternoon hits 12ft with onshore NNW wind – a total write-off.
Then comes Thursday the 24th. Morning is the winner: 6ft NW at 10 seconds, light offshore SSE, glassy. Afternoon drops to 5ft, still clean but smaller.
After that, it fades. Friday the 25th through Monday the 28th is tiny – 2ft or less, weak and flat. Sunday the 27th morning is glassy with a 1ft leftover, but there’s no push.
So, the story is simple: a few small clean days early, a lot of messy or too-big stuff in the middle, and one absolute standout on the morning of Thursday, September 24th. That’s your day.
Rusty.
Short Range ForecastModerate rain (total 16mm), heaviest on Mon afternoon. Very mild (max 18°C on Mon morning, min 13°C on Mon night). Winds increasing (light winds from the SSE on Sun afternoon, fresh winds from the WNW by Tue night). | Days 5-7 Weather SummaryLight rain (total 9mm), mostly falling on Wed night. Very mild (max 16°C on Fri morning, min 12°C on Wed night). Winds decreasing (strong winds from the W on Thu afternoon, light winds from the SW by Fri afternoon). | |||||||||||||||||||
Sun 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||
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) | NW 10 | NW 10 | WNW 9 | WNW 8 | WNW 10 | WNW 10 | WNW 10 | NW 7 | NW 11 | WNW 10 | WNW 9 | WNW 10 | NW 12 | NW 14 | NW 13 | NW 12 | NW 11 | WNW 10 | WNW 10 | NW 12 |
Wave Graph  | ||||||||||||||||||||
 kJ | 200 | 108 | 52 | 28 | 82 | 184 | 339 | 214 | 568 | 327 | 161 | 578 | 2428 | 4651 | 2887 | 1525 | 553 | 367 | 378 | 1682 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | cross | cross-off | cross | cross-on | cross | cross | cross-off | cross-off | cross | cross | cross-off | cross-off | cross-off | cross-off | cross | cross-off |
High Tide | 8:45PM2.17m | 9:05AM1.98m | 9:22PM2.00m | 9:43AM1.88m | 10:00PM1.81m | 10:26AM1.75m | 10:44PM1.62m | 11:20AM1.63m | 11:45PM1.47m | 1:25PM1.57m | 2:49AM1.42m | 3:06PM1.64m | ||||||||
Low Tide | 3:06AM0.48m | 2:52PM0.34m | 3:43AM0.61m | 3:34PM0.53m | 4:24AM0.78m | 4:20PM0.77m | 5:11AM0.95m | 5:21PM0.99m | 6:30AM1.09m | 7:48PM1.14m | 8:30AM1.14m | 9:35PM1.14m | ||||||||
 |  | |  |  |  | | |  | | | | | |  | |  | |  | | |
 | — | — | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — | 7:01 | — | — | 7:01 | — | — | 7:03 | — | — |
 | 7:50 | — | — | 7:46 | — | — | 7:44 | — | — | 7:42 | — | — | 7:38 | — | — | 7:37 | — | — | 7:34 | — |
mm | — | — | — | 7 | 1 | 1 | 2 | 4 | 1 | — | 2 | 2 | 1 | 2 | — | 1 | 1 | — | — | — |
Temp °C | 16 | 16 | 18 | 17 | 16 | 14 | 14 | 13 | 14 | 15 | 14 | 13 | 13 | 13 | 16 | 16 | 15 | 14 | 14 | 12 |
Feels °C | 14 | 14 | 16 | 15 | 13 | 8 | 8 | 7 | 9 | 11 | 10 | 6 | 5 | 6 | 12 | 13 | 12 | 10 | 7 | 7 |
Swell 1 Height (m) Direction Period (s) | NW 10 | NW 10 | WNW 9 | WNW 8 | WNW 10 | N 10 | N 9 | WNW 12 | NW 11 | WNW 10 | WNW 9 | WNW 10 | — | NW 14 | NW 13 | NW 12 | NW 11 | WNW 10 | WNW 10 | NW 12 |
| kJ | 200 | 108 | 52 | 28 | 82 | 2 | 2 | 60 | 568 | 327 | 161 | 578 | — | 4651 | 2887 | 1525 | 553 | 367 | 378 | 1682 |
Swell 2 Height (m) Direction Period (s) | — | N 14 | NNW 13 | WNW 11 | SE 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 4 | 17 | 12 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | NNW 13 | S 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 16 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SSE 2 | SSE 2 | SSE 3 | WSW 2 | WNW 10 | WNW 10 | NW 7 | — | — | SW 3 | — | NW 12 | — | — | — | SW 3 | SSW 2 | — | — |
| kJ | — | 1 | 1 | 2 | 1 | 184 | 339 | 214 | — | — | 4 | — | 2428 | — | — | — | 2 | 1 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 66 | 774 | 389 | 440 | 57 | 201 | 269 | 326 | 397 | 774 | 399 | 5 | 5 | 458 | 298 | 199 |
Best forecast wave conditions in Antrim | ||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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Information about the White Rocks Surf forecast
The above surf forecast table for White Rocks provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at White Rocks can be found by selecting the local surf guide option on the grey menu. Our White Rocks 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 (White Rocks) 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 White Rocks 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 Antrim? If you are looking for accommodation near White Rocks, camping, hotels and holiday cottages in Antrim, consider staying in Coleraine which is 11 km (7 miles) away. Other places in and around Antrim where you can find information about places to rent, and car hire include Ballycastle which is 21 km (13 miles) away, Ballypatrick, Ballymena and Malin Head.
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