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Portstewart Strand Surf Forecast
/ Londonderry (4 surf breaks) /
Surf Forecasts:
Portstewart Strand surfForecast / Londonderry / Ireland
48hr Weather and Surf, issued 5 am Saturday 21 Mar 2026 GMTForecast update in hr min s Forecast update imminent
Portstewart Strand surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Portstewart Strand sea temperature is
8.1° C
(Which is normal for this time of year)How big are the waves at Portstewart Strand today?
The current surf forecast for Portstewart Strand at 2PM is: 2.4m 16s primary swell from a Northwest direction (forecast issued at 05:00am March 21). The wind direction is predicted to be glassy and the swell rating is 4.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Mar) | 7ft (2.2m) | 15s |
| Afternoon (21 Mar) | 8ft (2.4m) | 16s |
| Evening (21 Mar) | 8ft (2.4m) | 15s |
Table - waves today at Portstewart Strand. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 21 | Sunday 22 | Monday 23 | Tue 24 | |||||||||||||||||||||
| 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 15 | 14 | 15 | 16 | 16 | 15 | 15 | 15 | 14 | 14 | 14 | 13 | 14 | 14 | 14 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 13 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1650 | 1728 | 2293 | 2881 | 2844 | 2772 | 2425 | 2061 | 1761 | 1438 | 1319 | 1682 | 2267 | 2805 | 2528 | 2605 | 2764 | 2847 | 3017 | 2633 | 2171 | 1735 | 1162 | 1103 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | glass | glass | cross- off | cross- off | cross- off | cross- off | cross- on | on | on | on | on | cross- on | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross |
High Tide / height (m) | 7:15AM 2.03 | 7:29PM 1.78 | 7:51AM 1.91 | 8:06PM 1.72 | 8:30AM 1.72 | 8:47PM 1.61 | ||||||||||||||||||
Low Tide / height (m) | 1:02AM -0.03 | 1:36PM 0.07 | 1:38AM 0.03 | 2:08PM 0.16 | 2:17AM 0.14 | 2:42PM 0.29 | ||||||||||||||||||
Saturday 21 | Sunday 22 | Monday 23 | Tue 24 | |||||||||||||||||||||
| Sunrise | - | - | 6:28 | - | - | - | - | - | - | - | 6:24 | - | - | - | - | - | - | - | 6:22 | - | - | - | - | - |
| Sunset | - | - | - | - | - | 6:40 | - | - | - | - | - | - | - | 6:43 | - | - | - | - | - | - | - | 6:45 | - | - |
 | |  |  | | | |  |  | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 8 | 7 | 8 | 10 | 12 | 12 | 10 | 9 | 8 | 8 | 9 | 9 | 8 | 8 | 7 | 6 | 6 | 5 | 6 | 8 | 9 | 10 | 11 | 12 |
| Feels °C (?) | 4 | 3 | 5 | 8 | 11 | 11 | 7 | 5 | 4 | 4 | 5 | 3 | 1 | 1 | 1 | 1 | 2 | 0 | 1 | 1 | 1 | 2 | 4 | 4 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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