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Clonmass Bay (Ards) surfForecast / Donegal / Ireland
12 Day Weather and Surf, issued 5 pm Thursday 18 Dec 2025 ISTForecast update in hr min s Forecast update imminent
Clonmass Bay (Ards) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Clonmass Bay (Ards) sea temperature is
9.9° C
(Which is normal for this time of year)Best Forecast Surf Conditions for Clonmass Bay (Ards) this week:
The most powerful waves expected at Clonmass Bay (Ards) in the next 12 days are 1.9m 6s and forecast to arrive on Monday (Dec 22) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 5.5m 16s period and expected on Friday (Dec 19) at 9AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 12AM (Mon 22nd Dec) | 6ft (1.9m) 6s |
Table - best surf conditions forecast for Clonmass Bay (Ards) over the next 12 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Moderate rain (total 14mm), heaviest on Thu afternoon. Mild temperatures (max 9°C on Thu night, min 5°C on Sat night). Winds decreasing (strong winds from the WSW on Fri morning, calm by Sun morning). | Days 3-6 Weather Summary Light rain (total 7mm), mostly falling on Sun afternoon. Mild temperatures (max 8°C on Sun afternoon, min 5°C on Tue morning). Winds decreasing (strong winds from the SE on Mon morning, calm by Tue night). | ||||||||||||||||||||||
Thu 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | |||||||||||||||||
| PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |||
Rating (10 max) | |||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||||
| Period(s) (?) | 19 | 17 | 16 | 15 | 13 | 12 | 12 | 16 | 16 | 16 | 6 | 6 | 8 | 9 | 10 | 14 | 12 | 12 | 13 | 7 | 11 | ||
Wave (?)Graph  | |||||||||||||||||||||||
 kJ (?) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 258 | 3 | 12 | 2 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | ||
Wind (km/h) | |||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- off | cross | cross | cross- off | off | cross- off | off | glass | cross- off | cross- off | off | off | off | off | glass | off | cross- off | cross- off | off | cross- off | ||
High Tide / height (m) | 5:09PM 2.89 | 5:29AM 3.06 | 5:45PM 2.94 | 6:05AM 3.15 | 6:20PM 2.97 | 6:40AM 3.20 | 6:54PM 2.95 | 7:15AM 3.20 | 7:28PM 2.90 | 7:51AM 3.17 | 8:03PM 2.82 | 8:28AM 3.12 | 8:41PM 2.72 | 9:06AM 3.05 | |||||||||
Low Tide / height (m) | 11:10PM 0.58 | 11:35AM 0.58 | 11:45PM 0.51 | 12:11PM 0.53 | 12:19AM 0.46 | 12:47PM 0.51 | 12:53AM 0.43 | 1:22PM 0.53 | 1:27AM 0.43 | 1:59PM 0.57 | 2:01AM 0.47 | 2:37PM 0.62 | 2:38AM 0.54 | ||||||||||
Thu 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | |||||||||||||||||
| Sunrise | - | - | 8:53 | - | - | 8:53 | - | - | 8:55 | - | - | 8:55 | - | - | 8:56 | - | - | 8:56 | - | - | 8:56 | ||
| Sunset | 4:01 | - | - | 4:01 | - | - | 4:01 | - | - | 4:02 | - | - | 4:02 | - | - | 4:04 | - | - | 4:04 | - | - | ||
 |  | |  |  |  | | | | | |  |  |  | | | | | | | | |||
Rain (mm) | 5 | 3 | 2 | - | - | 1 | - | 3 | - | 3 | 4 | - | - | - | - | - | - | - | - | - | - | ||
| Temp. °C | 7 | 9 | 9 | 9 | 9 | 9 | 8 | 7 | 7 | 8 | 8 | 7 | 7 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 4 | ||
| Feels °C (?) | -1 | -1 | 0 | 0 | 0 | -1 | 4 | 4 | 3 | 1 | -2 | -4 | -3 | 0 | 3 | 4 | 4 | 5 | 3 | 3 | 1 | ||
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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 Clonmass Bay (Ards) 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.
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Information about the Clonmass Bay (Ards) Surf forecast
The above surf forecast table for Clonmass Bay (Ards) provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Clonmass Bay (Ards) can be found by selecting the local surf guide option on the grey menu. Our Clonmass Bay (Ards) 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 (Clonmass Bay (Ards)) 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 Clonmass Bay (Ards) 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.
Clonmass Bay (Ards) is 26 km (16 miles) from the city of Letterkenny. If you plan a holiday in Donegal, look for hotels and other accommodation in Letterkenny. Letterkenny has rooms for a wide range of budgets as well as car hire and transport links.
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