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Surf Forecasts:
Mullaghmore surf forecast from 27 Aug 2026:
- Most powerful swell: Thursday 3 Sep, 1PM (local time) - 5.5ft (1.7m), 11s period, W swell with 639 kJ wave energy.
Best Forecast Surf Conditions for Mullaghmore this week:
The most powerful waves expected at Mullaghmore in the next 16 days are 1.7m 11s and forecast to arrive on Thursday (Sep 03) at 1PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Thursday (Sep 03) at 4AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1PM (Thu 3rd Sep) | 5.5ft (1.7m) 11s |
Table - best surf conditions forecast for Mullaghmore over the next 16 days.
The Lowdown
Alright, mates, Rusty here with the word.
For the next week and a half, we're looking at a pretty grim stretch of surf, to be honest. Most of it is a total bust. The first real light in the tunnel doesn't show up until the 4th of September, and even that one is for the hardcore crew only.
Mullaghmore (Sligo) is the only spot in the picture. It's a sheltered reef that needs a specific northwest groundswell and clean winds to fire. That's a tough combination to get right.
The first proper pulse hits on Friday the 4th of September in the morning. We're talking a 10-foot swell from the west with a long 12-second period, packing a massive punch (2468 combined swell energy). That is a big, dangerous wave for experts only. The wind is a light cross-shore from the southwest, which isn't perfect but should keep it from getting too choppy. The surf is described as "marginal" with tricky tides, so you need to know the reef well. The afternoon goes onshore and gets even bigger, so it's a morning mission only.
Now, Saturday the 5th of September is the one to circle. The morning sees a 6-foot west groundswell (10-second period, 682 energy) with a clean cross-offshore breeze from the south-southeast. That’s a beautiful combo for this reef—clean lines and plenty of power. The afternoon is even better, with the swell dropping to 5 feet and the wind going glassy. That's the session to put in for. Crowds are sometimes a factor here, so you might have some company.
Water temp is hanging around 62°, which is a touch warmer than usual for this time of year, so the wetsuit might be a little more comfortable.
After that killer Saturday, things go south again for the second week. The 6th and 7th have cleaner wind but the swell is messy and the breeze picks up strong. From the 8th onward, it's all weak, small swells and onshore winds. By the 11th of September, it's glassy but with a pathetic 0.7-foot wave. Not worth getting wet for.
So, bottom line: Saturday the 5th of September is your best window. The morning is great, the afternoon is the absolute standout with glassy conditions and a clean 5-foot wave. If you're a serious charger, the Friday morning 10-foot swell is an option, but it's not for the faint of heart. The rest of the run is a write-off.
Rusty.
Short Range ForecastModerate rain (total 10mm), heaviest on Sat morning. Warm (max 21°C on Thu afternoon, min 14°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 15mm), heaviest on Mon night. Very mild (max 17°C on Sun morning, min 12°C on Tue night). Winds increasing (calm on Sun afternoon, strong winds from the W by Mon night). | ||||||||||||||||||||
Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | |||||||||||||||
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) | W 9 | W 9 | WNW 8 | WNW 8 | WNW 7 | WNW 7 | NNW 6 | NW 7 | W 10 | WSW 10 | W 9 | W 9 | W 6 | W 6 | W 9 | WNW 8 | W 8 | W 8 | W 8 | W 7 | W 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 60 | 40 | 22 | 11 | 5 | 5 | 4 | 12 | 7 | 30 | 41 | 24 | 146 | 66 | 220 | 238 | 137 | 82 | 42 | 27 | 73 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross | glassy | on | cross-off | cross-on | on | cross-on | off | glassy | on | cross-on | cross | cross-off | cross-on | cross-on | cross | cross-off | off | cross-on |
High Tide | 6:28PM3.50m | 6:45AM3.12m | 6:58PM3.64m | 7:16AM3.23m | 7:29PM3.71m | 7:48AM3.29m | 8:00PM3.70m | 8:21AM3.29m | 8:33PM3.60m | 8:55AM3.23m | 9:10PM3.42m | 9:34AM3.12m | 9:51PM3.18m | ||||||||
Low Tide | 12:06PM0.43m | 00:40AM0.32m | 12:37PM0.29m | 1:09AM0.18m | 1:08PM0.20m | 1:39AM0.11m | 1:40PM0.18m | 2:10AM0.10m | 2:13PM0.22m | 2:42AM0.18m | 2:49PM0.33m | 3:17AM0.33m | 3:29PM0.50m | 3:57AM0.55m | |||||||
 |  |  |  | |  |  | | | | | |  | | | | | | |  | | |
 | 6:30 | — | — | 6:31 | — | — | 6:33 | — | — | 6:35 | — | — | 6:37 | — | — | 6:39 | — | — | 6:41 | — | — |
 | — | 8:37 | — | — | 8:36 | — | — | 8:32 | — | — | 8:30 | — | — | 8:29 | — | — | 8:25 | — | — | 8:23 | — |
mm | — | 2 | — | — | — | 2 | 5 | 1 | — | 1 | 4 | 2 | — | 2 | 6 | — | — | — | — | 6 | 6 |
Temp °C | 19 | 21 | 19 | 18 | 18 | 16 | 14 | 16 | 15 | 17 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 15 | 16 | 16 |
Feels °C | 18 | 21 | 19 | 17 | 16 | 16 | 13 | 14 | 14 | 16 | 17 | 14 | 11 | 10 | 9 | 9 | 10 | 10 | 13 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 9 | WNW 8 | WNW 8 | WNW 7 | WNW 7 | NNW 6 | W 7 | WNW 3 | WSW 10 | W 9 | W 9 | — | W 10 | — | WNW 8 | W 8 | W 8 | W 8 | W 7 | W 9 |
| kJ | 60 | 40 | 22 | 11 | 5 | 5 | 4 | 1 | 1 | 30 | 41 | 24 | — | 45 | — | 238 | 137 | 82 | 42 | 27 | 73 |
Swell 2 Height (m) Direction Period (s) | — | — | — | NW 5 | — | NW 4 | W 7 | W 10 | W 10 | NW 6 | NNW 7 | W 11 | — | — | — | — | — | NW 8 | N 8 | N 8 | N 8 |
| kJ | — | — | — | 1 | — | 1 | 1 | 2 | 7 | 1 | 5 | 21 | — | — | — | — | — | 2 | 1 | 1 | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | NW 6 | — | — | NNW 7 | NW 8 | — | NW 7 | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | 1 | — | — | 4 | 2 | — | 2 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | NW 2 | — | — | NW 7 | — | — | — | — | W 6 | W 6 | W 9 | — | NNW 6 | — | S 2 | S 3 | S 4 |
| kJ | — | — | — | — | 1 | — | — | 12 | — | — | — | — | 146 | 66 | 220 | — | 7 | — | 1 | 5 | 28 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 13 | 9 | 158 | 270 | 268 | 404 | 268 | 233 | 9 | 9 | 9 | 116 | 266 | 55 | 423 | 421 | 1240 | 23 | 9 | 79 | 417 |
Best forecast wave conditions in Sligo | |||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Mullaghmore 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 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.
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