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Surf Forecasts:
Mullaghmore surf forecast from 15 Aug 2026:
- Most powerful swell: Wednesday 19 Aug, 10PM (local time) - 11ft (3.5m), 11s period, W swell with 2,621 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 11s and forecast to arrive on Wednesday (Aug 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 0.3m 2s period and expected on Sunday (Aug 16) at 10AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Wed 19th Aug) | 11ft (3.5m) 11s |
Table - best surf conditions forecast for Mullaghmore over the next 16 days.
The Lowdown
Alright, Rusty here with the outlook for Mullaghmore.
Honestly, it’s a quiet stretch ahead. There’s no real swell to get excited about, and the wind is going to mess things up for most of the run.
Nothing is happening through the weekend and into Monday, August 18th. The waves are tiny, the wind is onshore or cross-off, and it's all flat and choppy. The water temperature is about 62°, which is a touch warmer than normal for this time of year.
On Tuesday, August 18th, we get a pulse of swell, pushing up to around 7 ft out of the west, with a period of 11 seconds. There’s some moderate wave energy in the water there, but it’s blowing 30 km/h from the WSW, a fresh cross-onshore that will have it lumpy and messy. This one is for the experts only at that size, and even then, it’s a fight.
That sticky onshore hangs around for Wednesday, August 19th. The swell holds around 7 ft from the WNW, but it’s paired with a strong 45 km/h breeze. It’s a washing machine out there, more of a kite-surfing day than a clean surf session.
Thursday, August 20th sees an offshore wind from the NW, and the swell drops back to about 5 ft from the WNW. The period is 9 seconds, so it's not holding together great. It’s the best looking day in the whole run, but the surf conditions are still rated poor, so it’s a low bar.
After that, it’s back to small, weak, and choppy through to the end of the month. The swell never gets above 3 ft, and the energy drains away. You get a few moments of glassy, clean conditions on the 23rd and 24th of August, with a very long period groundswell (13 seconds) on the 24th, but only 0.7 ft to 2 ft of wave. You’d need a longboard and a lot of patience. The following week repeats the same story – small waves and mostly cross-shore wind.
There is no standout session in this whole stretch. The entire 16-day window is a write-off for any quality surfing at Mullaghmore. The forecast can change, but for now, it’s a case of sitting this one out.
Rusty.
Short Range ForecastLight rain (total 9mm), mostly falling on Mon afternoon. Very mild (max 17°C on Mon afternoon, min 13°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 19mm), heaviest on Wed night. Very mild (max 17°C on Mon night, min 13°C on Tue night). Winds decreasing (strong winds from the W on Wed night, light winds from the NW by Thu afternoon). | ||||||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | |||||||||||||||
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 8 | WNW 8 | WNW 8 | WNW 8 | W 7 | W 8 | W 8 | W 7 | W 7 | W 8 | W 9 | W 10 | W 10 | W 11 | W 11 | WNW 10 | WNW 9 | WNW 8 | WNW 8 | WNW 7 | WNW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 83 | 83 | 54 | 37 | 44 | 112 | 105 | 52 | 155 | 224 | 325 | 720 | 1154 | 1736 | 2323 | 990 | 465 | 160 | 87 | 78 | 41 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | off | cross-off | cross-on | cross | cross-off | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | on | on | on | cross-on | cross-on | cross-on |
High Tide | 8:16AM3.35m | 8:31PM3.91m | 8:54AM3.26m | 9:09PM3.67m | 9:31AM3.13m | 9:47PM3.35m | 10:09AM2.95m | 10:27PM3.01m | 10:51AM2.76m | 11:11PM2.67m | 11:41AM2.56m | 00:08AM2.39m | 12:52PM2.41m | 1:34AM2.22m | |||||||
Low Tide | 2:04PM0.06m | 2:43AM0.05m | 2:43PM0.20m | 3:18AM0.25m | 3:22PM0.41m | 3:54AM0.51m | 4:02PM0.67m | 4:31AM0.78m | 4:48PM0.95m | 5:14AM1.05m | 5:46PM1.21m | 6:15AM1.27m | 7:18PM1.37m | ||||||||
 |  |  | | |  |  | | | | |  | |  | | |  |  | | |  | |
 | 6:07 | — | — | 6:09 | — | — | 6:11 | — | — | 6:13 | — | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — |
 | — | — | 9:06 | — | — | 9:04 | — | — | 9:01 | — | 8:59 | — | — | 8:57 | — | — | 8:54 | — | — | 8:52 | — |
mm | — | — | — | — | — | 1 | 3 | 5 | 1 | — | 1 | 4 | 2 | 2 | 7 | 2 | — | — | — | — | — |
Temp °C | 15 | 15 | 14 | 13 | 15 | 15 | 15 | 17 | 17 | 15 | 16 | 15 | 14 | 14 | 14 | 15 | 16 | 14 | 14 | 14 | 13 |
Feels °C | 12 | 12 | 13 | 11 | 14 | 13 | 14 | 15 | 16 | 11 | 12 | 11 | 7 | 7 | 7 | 10 | 11 | 12 | 11 | 9 | 9 |
Swell 1 Height (m) Direction Period (s) | WNW 8 | WNW 8 | WNW 8 | WNW 8 | W 7 | W 10 | W 8 | W 7 | — | — | W 9 | — | — | — | — | — | — | WNW 8 | WNW 8 | — | WNW 7 |
| kJ | 83 | 83 | 54 | 37 | 44 | 18 | 105 | 52 | — | — | 325 | — | — | — | — | — | — | 160 | 87 | — | 41 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | NW 8 | NW 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 8 |
| kJ | — | — | — | — | 9 | 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | SSW 2 | SSW 3 | W 8 | — | — | W 7 | W 8 | — | W 10 | W 10 | W 11 | W 11 | WNW 10 | WNW 9 | — | — | WNW 7 | — |
| kJ | — | — | — | 1 | 2 | 112 | — | — | 155 | 224 | — | 720 | 1154 | 1736 | 2323 | 990 | 465 | — | — | 78 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 55 | 703 | 29 | 9 | 9 | 29 | 3 | 9 | 270 | 284 | 266 | 142 | 142 | 511 | 142 | 200 | 441 | 200 | 19 | 187 | 147 |
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.
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