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Surf Forecasts:
Harbour surfForecast / Donegal / Ireland
16 Day Weather and Surf, issued 6 am Monday 18 May 2026 ISTForecast update in hr min s Forecast update imminent
Harbour surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Harbour sea temperature is
11.5° C
(Which is normal for this time of year)Best Forecast Surf Conditions for Harbour this week:
The surf forecast for Harbour over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (May 18) at 1PM. The primary swell is predicted to be 1.2m and 11s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Harbour in the next 16 days are 1.7m 15s and forecast to arrive on Wednesday (May 20) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Wednesday (May 20) at 7AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Mon 18th May) | 4ft (1.2m) 11s |
| Best Surf | 1PM (Mon 18th May) | 4ft (1.2m) 11s |
| Most Powerful | 4AM (Wed 20th May) | 5.5ft (1.7m) 15s |
Table - best surf conditions forecast for Harbour over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 21mm), heaviest during Mon night. Very mild (max 14°C on Wed morning, min 10°C on Mon morning). Winds increasing (light winds from the SSE on Mon morning, fresh winds from the WSW by Wed morning). | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Fri afternoon. Very mild (max 18°C on Thu morning, min 11°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
W 11 | W 10 | WNW 10 | WNW 9 | W 9 | W 15 | W 14 | W 13 | W 12 | W 11 | W 11 | W 10 | W 12 | W 12 | W 12 | WSW 11 | W 10 | W 9 | W 10 | W 9 | W 9 | |
396 | 250 | 100 | 28 | 41 | 791 | 1047 | 640 | 325 | 146 | 110 | 75 | 193 | 103 | 70 | 153 | 94 | 106 | 148 | 142 | 80 | |
Wind (km/h) | |||||||||||||||||||||
off | cross-off | off | cross-off | cross-off | cross-off | cross | cross | off | cross-off | cross-off | off | cross-off | cross | glassy | cross | cross-on | cross-off | cross-off | cross | cross-off | |
High Tide | 7:45PM3.68m | 8:11AM3.34m | 8:33PM3.64m | 9:04AM3.11m | 9:26PM3.52m | 10:01AM2.84m | 10:25PM3.36m | 11:05AM2.60m | 11:29PM3.20m | 12:16PM2.44m | 00:38AM3.07m | 1:31PM2.41m | 1:47AM2.99m | ||||||||
Low Tide | 1:21PM0.04m | 1:53AM0.04m | 2:06PM0.18m | 2:46AM0.17m | 2:53PM0.37m | 3:44AM0.36m | 3:45PM0.58m | 4:50AM0.56m | 4:45PM0.79m | 6:06AM0.70m | 5:57PM0.95m | 7:24AM0.74m | 7:17PM1.02m | ||||||||
 |  |  | | |  |  | | | | |  | | | |  | |  |  | |  | |
 | 5:24 | — | — | 5:22 | — | — | 5:20 | — | — | 5:18 | — | — | 5:16 | — | — | 5:16 | — | — | 5:15 | — | — |
 | — | — | 9:36 | — | — | 9:37 | — | — | 9:38 | — | — | 9:40 | — | — | 9:42 | — | — | 9:44 | — | — | 9:45 |
— | 2 | 8 | 3 | 3 | 1 | 1 | 1 | 2 | — | 4 | — | — | 3 | 1 | — | — | — | — | — | — | |
Temp °C | 12 | 13 | 11 | 13 | 12 | 11 | 14 | 14 | 14 | 18 | 16 | 15 | 17 | 18 | 14 | 15 | 17 | 14 | 16 | 18 | 16 |
8 | 8 | 8 | 9 | 8 | 8 | 8 | 9 | 11 | 15 | 14 | 12 | 15 | 16 | 14 | 13 | 15 | 12 | 13 | 15 | 16 | |
Swell 1 Height (m) Direction Period (s) | W 11 | W 10 | WNW 10 | WNW 9 | W 9 | W 15 | W 14 | W 13 | W 12 | W 11 | W 11 | W 10 | W 12 | W 12 | W 12 | WSW 11 | W 10 | W 9 | W 10 | W 9 | W 9 |
 kJ | 396 | 250 | 100 | 28 | 41 | 791 | 1047 | 640 | 325 | 146 | 110 | 75 | 193 | 103 | 70 | 153 | 94 | 106 | 148 | 142 | 80 |
Swell 2 Height (m) Direction Period (s) | — | — | W 15 | W 9 | W 13 | — | — | — | — | NW 7 | — | W 15 | NW 6 | — | — | — | — | — | — | — | W 15 |
| kJ | — | — | 5 | 14 | 31 | — | — | — | — | 7 | — | 17 | 2 | — | — | — | — | — | — | — | 17 |
Swell 3 Height (m) Direction Period (s) | — | — | — | W 14 | W 17 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 16 | 22 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | SE 3 | SSE 3 | SSW 3 | SW 4 | — | — | — | S 3 | S 3 | S 3 | S 2 | SSW 3 | WSW 5 | — | — | — | — | — | — |
| kJ | — | — | 4 | 3 | 2 | 16 | — | — | — | 6 | 11 | 5 | 1 | 3 | 39 | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 32 | 276 | 48 | 37 | 3 | 118 | 191 | 0 | 37 | 0 | 0 | 0 | 12 | 0 | 18 | 37 | 0 | 0 | 38 | 0 |
Best forecast wave conditions in Donegal | |||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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 Harbour 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 Harbour Surf forecast
The above surf forecast table for Harbour provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Harbour can be found by selecting the local surf guide option on the grey menu. Our Harbour 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 (Harbour) 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 Harbour 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.
Harbour is 20 km (12 miles) from Killybegs. If you plan a holiday in Donegal, 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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