- Forecast
- Maps
- Live
- Weather State
- Spot Information
Surf Forecasts:
Clonmass Bay (Ards) surfForecast / Donegal / Ireland
12 Day Weather and Surf, issued 12 pm Tuesday 16 Sep 2025 IST
Best Forecast Surf Conditions for Clonmass Bay (Ards) this week:
The surf forecast for Clonmass Bay (Ards) over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 18) at 10PM. The primary swell is predicted to be 1.0m and 13s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Clonmass Bay (Ards) in the next 12 days are 3.5m 8s and forecast to arrive on Saturday (Sep 20) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.0m 14s period and expected on Wednesday (Sep 17) at 7PM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Thu 18th Sep) | 3.5ft (1.0m) 13s |
| Best Surf | 10PM (Thu 18th Sep) | 3.5ft (1.0m) 13s |
| Most Powerful | 7PM (Sat 20th Sep) | 11ft (3.5m) 8s |
Table - best surf conditions forecast for Clonmass Bay (Ards) over the next 12 days.
Short Range Forecast Moderate rain (total 15mm), heaviest on Tue night. Very mild (max 16°C on Thu morning, min 11°C on Tue night). Winds decreasing (strong winds from the SW on Wed afternoon, calm by Thu afternoon). | Days 3-6 Weather Summary Light rain (total 9mm), mostly falling on Fri night. Very mild (max 15°C on Fri morning, min 10°C on Sat night). Winds increasing (light winds from the WSW on Fri night, near gales from the NNE by Sat night). | ||||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 10 | 9 | 9 | 8 | 9 | 9 | 9 | 14 | 13 | 12 | 11 | 10 | 10 | 7 | 8 | 7 | 7 | 6 | 10 | 10 | 9 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 33 | 28 | 14 | 35 | 39 | 14 | 6 | 37 | 755 | 636 | 415 | 482 | 660 | 706 | 1130 | 620 | 425 | 132 | 186 | 125 | 96 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | off | cross- off | cross | cross- off | cross- off | cross | cross | cross- off | cross | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | on |
High Tide / height (m) | 2:46PM 2.60 | 3:39AM 2.43 | 4:07PM 2.83 | 4:43AM 2.64 | 5:02PM 3.09 | 5:28AM 2.85 | 5:44PM 3.31 | 6:05AM 3.02 | 6:19PM 3.46 | 6:38AM 3.15 | 6:51PM 3.53 | 7:07AM 3.23 | 7:21PM 3.53 | ||||||||
Low Tide / height (m) | 9:18PM 0.99 | 9:37AM 0.99 | 10:31PM 0.75 | 10:38AM 0.74 | 11:19PM 0.51 | 11:22AM 0.49 | 11:57PM 0.31 | 11:58AM 0.29 | 12:29AM 0.17 | 12:31PM 0.16 | 12:59AM 0.09 | 1:03PM 0.10 | 1:27AM 0.08 | ||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | |||||||||||||||
| Sunrise | 7:03 | - | - | 7:05 | - | - | 7:07 | - | - | 7:09 | - | - | 7:11 | - | - | 7:13 | - | - | 7:15 | - | - |
| Sunset | - | 7:46 | - | - | 7:44 | - | - | 7:42 | - | - | 7:38 | - | - | 7:37 | - | - | 7:34 | - | - | 7:30 | - |
 |  |  | | |  | | |  | |  | |  | | | | | | | |  | |
Rain (mm) | 2 | - | 12 | - | - | - | - | - | 1 | - | - | 3 | 2 | - | 1 | 2 | 1 | - | - | - | 1 |
| Temp. °C | 14 | 14 | 13 | 15 | 15 | 14 | 16 | 16 | 16 | 15 | 15 | 13 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 13 |
| Feels °C (?) | 9 | 10 | 9 | 10 | 7 | 6 | 13 | 14 | 11 | 9 | 10 | 10 | 3 | 0 | -1 | 3 | 2 | 4 | 6 | 8 | 9 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Donegal
Cross-shore wind has turned cross-on at Ballyhiernan Bay (light winds from the W at Malin Head 27 km from Ballyhiernan Bay). No surfable waves
32 km away, 1 h 50 min ago
FREE! Surf-Forecast.com widget for your website
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.
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.
Nearest