
Surf Forecasts:
Mullaghmore surf forecast from 13 Sep 2026:
- Most powerful swell: Saturday 19 Sep, 10PM (local time) - 11ft (3.5m), 14s period, W swell with 4,713 kJ wave energy.
Best Forecast Surf Conditions for Mullaghmore this week:
The most powerful waves expected at Mullaghmore in the next 16 days are 3.5m 14s and forecast to arrive on Saturday (Sep 19) at 10PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Friday (Sep 18) at 7PM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Sat 19th Sep) | 11ft (3.5m) 14s |
Table - best surf conditions forecast for Mullaghmore over the next 16 days.
The Lowdown
Alright folks, Rusty here, lookin’ at the charts for the next couple of weeks, and it’s a mixed bag – a lot of wind and noise, but there are a couple of windows where this place could light up proper.
Right off the bat, we’ve got a stretch of poor conditions. From Sunday the 13th through Thursday the 17th, it’s mostly messy. There’s surf, but the wind’s all over the place, and it’s blown out or lumpy. Swell is small and weak for the most part, with the combined energy barely cracking 300-400 units. There’s a bit of a pulse on Thursday the 17th, with the swell pushing to 10ft, but the wind is killin’ it, so it’s not gonna be any good for a surfer.
The first real glimmer of hope comes on Friday the 18th. We finally get a clean one. The wind swings cross-off, the wave face is clean, and there’s a solid 8ft of WNW groundswell. The combined swell energy is a strong 2288. This is a proper heavy-water wave, so it’s for the experts only. The tide has to be right, and it’s still a bit on the edge, but this is the standout of the first week. The period is 13 seconds, so there’s real push behind it, but remember at a slab like this, a big NW groundswell can jack up big and close out if you’re not careful.
The weekend after that, Saturday the 19th, gets blown to bits again, so Friday is your day. We then go through another patch of rough stuff from the 21st to the 23rd. It’s big – up to 10ft or so – but with near-gale to strong cross-onshore winds, it’s just a washing machine out there.
Then we come to Thursday the 24th. This is the one I’m circling on the calendar. The forecast shows a large, clean cross-off swell, with wave heights getting up to 13ft in the afternoon. The combined energy is a massive 5182, and the period is a very long 14 seconds. This is the biggest, cleanest, most powerful swell of the whole forecast. Again, this is a deadly, expert-only wave. The tide will be crucial, but if it lines up, this will be the best day of the period. The water temp is about average for this time of year, so a good 4/3 should do.
After that, we’re back into a windy, messy phase from Friday the 25th through to the end of the run. The swell stays solid, 8ft, but the cross-onshore winds ruin it. The final day, Monday the 28th, does glass right off, but there’s not much energy left – a weak 1.5ft.
So, to keep it simple: if you’re an absolute charger, you’re looking at Friday the 18th for the first proper one, and then Thursday the 24th is the real prize. That long-period groundswell, with that size and clean wind, is going to be something else. But don’t get too attached to the long-range stuff, things can change. The rest of the time, it’s a waiting game.
Catch ya on the water.
Short Range ForecastModerate rain (total 15mm), heaviest on Mon morning. Very mild (max 18°C on Sun afternoon, min 13°C on Sat night). Winds increasing (calm on Sat night, fresh winds from the WNW by Tue afternoon). | Days 4-6 Weather SummaryModerate rain (total 17mm), heaviest on Wed night. Very mild (max 15°C on Fri morning, min 13°C on Tue night). Mainly strong winds. | ||||||||||||||||||||
Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | |||||||||||||||
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 11 | WNW 10 | WNW 9 | W 8 | W 11 | W 10 | W 10 | WNW 10 | WNW 12 | WNW 10 | WNW 10 | W 9 | W 9 | WNW 16 | WNW 14 | W 13 | WNW 13 | W 11 | W 11 | W 13 | W 14 |
Wave Graph | |||||||||||||||||||||
260 | 137 | 71 | 28 | 151 | 301 | 153 | 435 | 1259 | 647 | 386 | 398 | 694 | 4026 | 3680 | 2288 | 1521 | 1673 | 2904 | 4142 | 4310 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | cross-off | cross-on | cross-on | cross-on | cross-on |
High Tide | 7:47AM3.46m | 8:00PM3.74m | 8:20AM3.39m | 8:34PM3.49m | 8:53AM3.26m | 9:08PM3.19m | 9:26AM3.07m | 9:44PM2.87m | 10:03AM2.85m | 10:23PM2.55m | 10:49AM2.61m | 11:18PM2.28m | 12:00PM2.41m | 00:50AM2.11m | |||||||
Low Tide | 1:39PM0.07m | 2:06AM0.07m | 2:15PM0.19m | 2:37AM0.27m | 2:50PM0.39m | 3:07AM0.52m | 3:27PM0.65m | 3:40AM0.79m | 4:07PM0.93m | 4:17AM1.07m | 5:00PM1.22m | 5:11AM1.31m | 6:32PM1.42m | ||||||||
7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:07 | — | — | 7:09 | — | — | 7:09 | — | — | 7:11 | — | — | |
— | 7:55 | — | — | 7:53 | — | — | 7:51 | — | — | 7:49 | — | — | 7:45 | — | — | 7:44 | — | — | 7:40 | — | |
mm | — | — | — | 4 | 3 | 2 | 4 | 2 | 2 | 1 | — | 6 | 2 | 2 | 3 | — | 1 | 12 | 2 | 2 | 1 |
Temp °C | 16 | 18 | 17 | 16 | 17 | 17 | 14 | 14 | 13 | 13 | 14 | 14 | 13 | 13 | 14 | 15 | 15 | 14 | 13 | 13 | 13 |
Feels °C | 16 | 17 | 16 | 14 | 15 | 12 | 9 | 8 | 7 | 9 | 10 | 9 | 6 | 6 | 8 | 10 | 11 | 5 | 3 | 3 | 5 |
Swell 1 Height (m) Direction Period (s) | WNW 11 | WNW 10 | WNW 9 | W 8 | W 11 | NW 12 | W 10 | — | — | WNW 10 | WNW 10 | — | — | — | — | W 13 | WNW 13 | — | — | — | W 14 |
260 | 137 | 71 | 23 | 151 | 6 | 153 | — | — | 647 | 386 | — | — | — | — | 2288 | 1521 | — | — | — | 4310 | |
Swell 2 Height (m) Direction Period (s) | WSW 10 | W 10 | WSW 9 | WNW 8 | NW 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
19 | 49 | 27 | 28 | 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | NW 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | SSW 2 | SSW 3 | S 3 | W 10 | WNW 5 | WNW 10 | WNW 12 | — | — | W 9 | W 9 | WNW 16 | WNW 14 | — | SSW 4 | W 11 | W 11 | W 13 | — |
— | — | 1 | 3 | 5 | 301 | 37 | 435 | 1259 | — | — | 398 | 694 | 4026 | 3680 | — | 38 | 1673 | 2904 | 4142 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 3 | 3 | 3 | 29 | 29 | 55 | 829 | 727 | 568 | 242 | 55 | 141 | 454 | 502 | 398 | 531 | 266 | 550 | 720 | 721 | 688 |
Best forecast wave conditions in Sligo | |||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||
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Information about the Mullaghmore Surf forecast
The above surf forecast table for Mullaghmore provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Mullaghmore can be found by selecting the local surf guide option on the grey menu. Our Mullaghmore 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 (Mullaghmore) 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 Mullaghmore 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.
Mullaghmore is 20 km (12 miles) from Killybegs. If you plan a holiday in Sligo, look for hotels and other accommodation in Killybegs. Killybegs has rooms for a wide range of budgets as well as car hire and transport links.










