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Portstewart Strand Surf Forecast
/ Londonderry (4 surf breaks) /
Surf Forecasts
Portstewart Strand surfForecast / Londonderry / Ireland
48hr Weather and Surf, issued 12 am Wednesday 25 Jun 2025 BSTForecast 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
14.2° C
(Which is 1.6°C warmer than normal for this time of year)How big are the waves at Portstewart Strand today?
The current surf forecast for Portstewart Strand at 5AM is: 0.6m 9s primary swell from a West-northwest direction and 0.4m 8s secondary swell from a North-northwest direction (forecast issued at 12:00am June 25). The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (25 Jun) | 1.5ft (0.5m) | 9s |
| Afternoon (25 Jun) | 1.5ft (0.5m) | 9s |
| Evening (25 Jun) | 1.5ft (0.4m) | 10s |
Table - waves today at Portstewart Strand. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 25 | Thursday 26 | Friday 27 | Saturday 28 | Sunday 29 | Monday 30 | Tuesday 01 | Wednesday 02 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Swell Height Map |  |    |    |    |    |    |    |    |    | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 12 | 12 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 7 | 8 | 7 | 7 | 8 | 8 | 8 | 8 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Energy (?) | 105 | 85 | 84 | 57 | 57 | 52 | 37 | 39 | 38 | 34 | 28 | 52 | 56 | 66 | 88 | 151 | 154 | 160 | 170 | 149 | 149 | 130 | 99 | 118 | 118 | 116 | 87 | 84 | 97 | 96 | 163 | 347 | 325 | 288 | 237 | 262 | 227 | 197 | 160 | 157 | 130 | 102 | 100 | 57 | 68 | 68 | 54 | 46 | 58 | 55 | 190 | 178 | 179 | 115 | 79 | 55 | 56 | 31 | 37 | 38 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | glass | cross- off | cross- off | cross- off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- on | cross- on | cross- on | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross | cross | cross- on | cross- on | cross- on | on | on | glass | off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross- on | on | on | cross- on | cross- on | glass | glass | glass | glass | cross | cross- on | cross- on | glass | cross- off | cross | cross |
High Tide / height (m) | 6:34AM 1.65 | 6:58PM 1.84 | 7:19AM 1.61 | 7:44PM 1.89 | 8:02AM 1.55 | 8:29PM 1.90 | 8:42AM 1.47 | 9:15PM 1.85 | 9:21AM 1.39 | 10:00PM 1.77 | 10:01AM 1.30 | 10:45PM 1.66 | 10:43AM 1.22 | 11:32PM 1.54 | ||||||||||||||||||||||||||||||||||||||||||||||
Low Tide / height (m) | 12:41AM 0.19 | 12:53PM 0.18 | 1:35AM 0.15 | 1:36PM 0.15 | 2:25AM 0.17 | 2:18PM 0.14 | 3:12AM 0.23 | 2:58PM 0.15 | 3:59AM 0.31 | 3:39PM 0.19 | 4:44AM 0.41 | 4:21PM 0.26 | 5:30AM 0.50 | 5:05PM 0.36 | 6:17AM 0.56 | |||||||||||||||||||||||||||||||||||||||||||||
Wednesday 25 | Thursday 26 | Friday 27 | Saturday 28 | Sunday 29 | Monday 30 | Tuesday 01 | Wednesday 02 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Sunrise | - | - | - | 4:47 | - | - | - | - | - | - | - | 4:47 | - | - | - | - | - | - | - | 4:48 | - | - | - | - | - | - | - | 4:48 | - | - | - | - | - | - | - | 4:48 | - | - | - | - | - | - | - | 4:50 | - | - | - | - | - | - | - | 4:50 | - | - | - | - | - | - | - | 4:50 |
| Sunset | 10:10 | - | - | - | - | - | - | - | 10:10 | - | - | - | - | - | - | - | 10:10 | - | - | - | - | - | - | - | 10:10 | - | - | - | - | - | - | - | 10:10 | - | - | - | - | - | - | - | 10:09 | - | - | - | - | - | - | - | 10:09 | - | - | - | - | - | - | - | 10:09 | - | - | - |
 |  | | |  | | | | |  | | |  |  | | | | | | | | | | | | |  | | | | | | | | | | | | |  | | | | | | | | | | |  | | | | | |  | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | 2 | - | - | 2 | - | - | - | - | - | - | - | - | 2 | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 | - | - | 2 | 4 | - | - | - | - | - | - | - | - | - | - | 1 | 1 | - | - | - |
| Temp. °C | 13 | 13 | 13 | 13 | 15 | 17 | 18 | 17 | 15 | 13 | 12 | 13 | 12 | 15 | 16 | 15 | 14 | 14 | 15 | 15 | 15 | 17 | 18 | 19 | 18 | 18 | 15 | 13 | 15 | 18 | 18 | 17 | 14 | 14 | 13 | 13 | 18 | 22 | 24 | 22 | 20 | 19 | 18 | 16 | 13 | 14 | 14 | 13 | 12 | 11 | 11 | 11 | 13 | 14 | 14 | 14 | 14 | 12 | 11 | 11 |
| Feels °C (?) | 11 | 12 | 11 | 11 | 13 | 15 | 15 | 15 | 14 | 12 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 10 | 10 | 11 | 11 | 14 | 14 | 16 | 16 | 15 | 11 | 9 | 11 | 14 | 13 | 13 | 12 | 13 | 10 | 9 | 14 | 19 | 22 | 21 | 19 | 18 | 15 | 15 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 9 | 12 | 12 | 11 | 12 | 13 | 9 | 8 | 8 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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