
Surf Forecasts:
White Rocks surf forecast from 14 Sep 2026:
- Best quality surf: Thursday 17 Sep, 10PM (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 4,651 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 1PM (local time) - 2ft (0.6m), 9s period with WNW 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 1PM. The primary swell is predicted to be 0.6m and 9s period with a secondary swell of 0.2m and 13s. 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 0.7m 4s period and expected on Monday (Sep 21) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Mon 14th Sep) | 2ft (0.6m) 9s |
| Best Surf | 10PM (Thu 17th 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, let's see what we've got for White Rocks.
Right, White Rocks is the only show in town for this forecast period, so we're sticking with it. The whole setup is for an exposed NW swell window, and the optimum direction is NW, so we're basically looking for that combo.
We've got a bit of a slow start here. The very beginning of the period, Monday the 14th, is just tiny. We're talking 2ft of weak WNW swell at 9 seconds, with total energy of 69. It's clean enough, with a light S wind blowing offshore, but it's just not going to get you out of bed.
Tuesday the 15th picks up a bit, with a 4ft WNW swell at 10 seconds, and energy jumps to 267, but the wind is a fresh 19 mph cross-off, then goes cross. It's messy, and the forecast agrees, calling it poor.
Wednesday and Thursday the 16th and 17th see the swell building. Wednesday morning has 6ft NW swell at 11 seconds (energy 738), but it's cross-shore and lumpy. Thursday afternoon gets proper, with an 8ft WNW swell at 12 seconds and energy screaming up to 2237, but a strong 25 mph cross-wind chops it to bits.
Now, here's where it gets interesting. Friday the 18th of September is a standout. The morning is *too* big, with 10ft NW swell at 13 seconds (energy 2760) – that's an expert-only paddling session. But the afternoon... oh, the afternoon. The swell drops to 8ft NW at 12 seconds, energy is still a meaty 1550, and this time we get a clean, moderate offshore wind from the SSW. This is the moment for experienced surfers. That NW swell combining with the right direction and clean wind means solid, powerful lines. The water temp is about average for this time of year, nothing to write home about.
Just a heads up, between the 19th and the 21st, the wind turns onshore or cross again, making the surf messy despite the size. It's a bit of a lull for quality.
Then, on Sunday the 20th, we get a moment of magic. Late afternoon, the wind drops to glassy – literally 0 mph from the NNW. The swell is a mammoth 10ft NW at a very long 14 seconds, with energy at 3038. It's glassy, it's big, and it's lined up. Again, this is expert territory. That long period groundswell will be holding up beautifully, but it's going to be heavy.
The next real highlight comes much later. Thursday the 24th of September afternoon. A new swell arrives, 7ft from the NW with a period of 17 seconds – that's a seriously long-period groundswell. Combined energy of 2161. The wind is a light cross-off from the ESE, keeping the faces clean. This is another excellent window for experienced surfers; the waves will have real grunt. The beginning of Friday the 25th also holds promise with a 5ft NW swell at 14 seconds and a clean offshore breeze.
After that, the swell fades out into the end of September, with very small surf and clean offshore winds. Good for a beginner on the small days, but the real action is those big, clean swells on the 18th, 20th, and 24th.
This is White Rocks, so it's an exposed spot. When it's big and clean, it's a thing of beauty. The crowds? The guidance says "sometimes", so you might have company, but it won't be a circus. Because the best days are big, this spot is really for the experienced crew when it's pumping. Keep an eye on those long-range windows.
Rusty.
Short Range ForecastModerate rain (total 16mm), heaviest on Mon afternoon. Very mild (max 18°C on Mon morning, min 12°C on Wed night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Fri morning. Very mild (max 15°C on Fri afternoon, min 11°C on Thu night). Winds decreasing (strong winds from the W on Thu afternoon, light winds from the SSW by Sat night). | ||||||||||||||||||||
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) | WNW 9 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | NW 7 | WNW 11 | WNW 10 | WNW 9 | WNW 10 | NW 13 | NW 14 | NW 13 | NW 12 | NW 11 | NW 10 | NW 11 | NW 11 | NW 14 | NW 13 | NW 13 |
Wave Graph | |||||||||||||||||||||
52 | 28 | 85 | 59 | 261 | 188 | 645 | 327 | 165 | 590 | 2736 | 4274 | 2076 | 1131 | 604 | 392 | 415 | 626 | 1236 | 1387 | 1210 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | cross-off | cross | cross-on | cross | cross-off | cross-off | cross-off | cross | cross-off | off | off | cross-off | cross-off | cross | cross-off | off | cross-off | cross-off |
High Tide | 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 | 4:07AM1.46m | 4:08PM1.73m | |||||||||
Low Tide | 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 | 9:42AM1.12m | 10:54PM1.09m | ||||||||
6:54 | — | — | 6:56 | — | — | 6:58 | — | — | 7:01 | — | — | 7:01 | — | — | 7:03 | — | — | 7:05 | — | — | |
— | 7:46 | — | — | 7:44 | — | — | 7:42 | — | — | 7:38 | — | — | 7:37 | — | — | 7:34 | — | — | 7:30 | — | |
mm | — | 7 | — | 1 | 1 | 4 | 1 | — | 2 | 1 | 1 | — | 2 | 2 | — | — | — | — | — | 1 | — |
Temp °C | 18 | 18 | 16 | 15 | 15 | 13 | 13 | 15 | 14 | 13 | 13 | 12 | 13 | 15 | 15 | 15 | 14 | 12 | 11 | 17 | 17 |
Feels °C | 16 | 17 | 14 | 9 | 9 | 7 | 8 | 11 | 10 | 6 | 6 | 5 | 9 | 12 | 11 | 9 | 8 | 7 | 8 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | WNW 9 | WNW 8 | WNW 10 | WNW 10 | N 9 | NW 13 | — | WNW 10 | WNW 9 | WNW 10 | NW 13 | NW 14 | NW 13 | NW 12 | NW 11 | NW 10 | NW 11 | NW 11 | NW 14 | NW 13 | NW 13 |
52 | 28 | 85 | 59 | 2 | 25 | — | 327 | 165 | 590 | 2736 | 4274 | 2076 | 1131 | 604 | 392 | 415 | 626 | 1236 | 1387 | 1210 | |
Swell 2 Height (m) Direction Period (s) | NNW 13 | WNW 11 | — | N 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
17 | 23 | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | NNW 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | 16 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SSE 2 | S 3 | S 3 | W 6 | WNW 10 | NW 7 | WNW 11 | — | — | SSW 3 | — | — | — | SSW 3 | — | SW 2 | W 3 | — | — | — | — |
1 | 1 | 2 | 31 | 261 | 188 | 645 | — | — | 1 | — | — | — | 5 | — | 1 | 5 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 201 | 389 | 774 | 587 | 140 | 5 | 310 | 386 | 1022 | 414 | 0 | 37 | 5 | 345 | 298 | 5 | 0 | 5 | 5 |
Best forecast wave conditions in Antrim | |||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||
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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.










