Surf Forecasts:
Clonmass Bay (Ards) surf forecast from 3 Aug 2026:
- Best quality surf: Sunday 9 Aug, 10PM (local time) - 4.5ft (1.4m), 11s period, NNW swell with cross-offshore winds.
- Most powerful swell: Thursday 6 Aug, 1AM (local time) - 7ft (2.2m), 8s period, NNW swell with 575 kJ wave energy.
- Next surfable swell (1★+): Tuesday 4 Aug, 4AM (local time) - 3ft (0.9m), 9s period with N swell.
Best Forecast Surf Conditions for Clonmass Bay (Ards) this week:
The surf forecast for Clonmass Bay (Ards) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 04) at 4AM. The primary swell is predicted to be 0.9m and 9s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Clonmass Bay (Ards) in the next 16 days are 2.2m 8s and forecast to arrive on Thursday (Aug 06) at 1AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.0m 9s period and expected on Wednesday (Aug 05) at 10AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Tue 4th Aug) | 3ft (0.9m) 9s |
| Best Surf | 10PM (Sun 9th Aug) | 4.5ft (1.4m) 11s |
| Most Powerful | 1AM (Thu 6th Aug) | 7ft (2.2m) 8s |
Table - best surf conditions forecast for Clonmass Bay (Ards) over the next 16 days.
Short Range ForecastHeavy rain (total 27mm), heaviest during Wed afternoon. Very mild (max 17°C on Mon afternoon, min 13°C on Tue night). Winds increasing (light winds from the S on Tue morning, near gales from the W by Wed morning). | Days 5-7 Weather SummaryMostly dry. Very mild (max 17°C on Sat morning, min 13°C on Thu night). Winds decreasing (fresh winds from the SW on Fri morning, light winds from the W by Sat night). | |||||||||||||||||||
Mon 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | ||||||||||||||
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) | N 9 | N 9 | N 8 | NNW 8 | NW 9 | WNW 9 | NW 9 | NNW 8 | N 7 | N 6 | W 5 | N 6 | W 8 | W 10 | N 11 | N 10 | N 9 | N 8 | NNW 13 | NNW 11 |
Wave Graph  | ||||||||||||||||||||
 kJ | 103 | 78 | 105 | 112 | 0 | 0 | 0 | 575 | 134 | 51 | 58 | 3 | 0 | 0 | 2 | 2 | 6 | 1 | 95 | 485 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | on | off |
High Tide | 9:56PM3.20m | 10:16AM2.83m | 10:35PM3.04m | 11:00AM2.71m | 11:22PM2.86m | 11:56AM2.58m | 00:27AM2.67m | 1:13PM2.50m | 1:55AM2.55m | 2:47PM2.57m | 3:29AM2.61m | 4:09PM2.80m | ||||||||
Low Tide | 4:07AM0.45m | 4:13PM0.53m | 4:48AM0.59m | 5:00PM0.72m | 5:40AM0.76m | 6:01PM0.90m | 6:48AM0.92m | 7:25PM1.02m | 8:15AM0.97m | 9:01PM0.95m | 9:39AM0.85m | 10:22PM0.72m | ||||||||
 |  |  |  |  | |  |  |  | |  | | | | | | |  | |  | |
 | — | — | 5:43 | — | — | 5:45 | — | — | 5:47 | — | — | 5:48 | — | — | 5:50 | — | — | 5:52 | — | — |
 | — | 9:31 | — | — | 9:30 | — | — | 9:28 | — | — | 9:25 | — | — | 9:23 | — | — | 9:21 | — | — | 9:19 |
mm | — | 7 | 1 | 1 | 3 | 3 | 9 | 3 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 17 | 17 | 16 | 14 | 13 | 13 | 14 | 14 | 15 | 14 | 16 | 16 | 15 | 17 | 16 | 15 | 16 | 16 | 15 |
Feels °C | 15 | 16 | 17 | 14 | 10 | 4 | 5 | 9 | 10 | 10 | 11 | 9 | 9 | 10 | 11 | 11 | 13 | 15 | 15 | 14 |
Swell 1 Height (m) Direction Period (s) | N 9 | N 9 | N 8 | NNW 8 | W 10 | — | — | NNW 8 | N 7 | N 6 | N 6 | N 6 | — | — | N 11 | N 10 | N 9 | N 8 | NNW 13 | NNW 11 |
| kJ | 103 | 78 | 105 | 112 | 2 | — | — | 350 | 134 | 51 | 7 | 3 | — | — | 2 | 2 | 6 | 1 | 95 | 485 |
Swell 2 Height (m) Direction Period (s) | NW 7 | NE 5 | E 5 | W 11 | — | — | — | — | W 10 | W 10 | WNW 10 | — | — | — | — | — | — | — | N 8 | WNW 9 |
| kJ | 7 | 6 | 5 | 2 | — | — | — | — | 8 | 17 | 18 | — | — | — | — | — | — | — | 1 | 293 |
Swell 3 Height (m) Direction Period (s) | WSW 9 | NW 6 | W 9 | E 6 | — | — | — | — | — | WNW 10 | — | — | — | — | — | — | — | — | — | — |
| kJ | 9 | 6 | 2 | 1 | — | — | — | — | — | 9 | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NE 3 | ESE 2 | — | — | NW 9 | WNW 9 | NW 9 | NNW 8 | WNW 6 | W 6 | W 5 | W 7 | W 8 | W 10 | W 9 | W 9 | WNW 8 | WNW 10 | WNW 9 | — |
| kJ | 5 | 1 | — | — | 371 | 2632 | 1575 | 575 | 70 | 41 | 58 | 260 | 559 | 1043 | 1016 | 575 | 516 | 851 | 601 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 34 | 7 | 1 | 18 | 18 | 154 | 433 | 443 | 350 | 350 | 111 | 48 | 78 | 78 | 81 | 115 | 48 | 42 | 42 | 0 |
Best forecast wave conditions in Donegal | ||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||
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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 16 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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