
Surf Forecasts:
How big are the waves at Portstewart Strand today (20 Sep):
- Afternoon surf: Afternoon surf (20 Sep, local time) - 6ft (1.8m), 11s period with NW swell.
- Evening surf: Evening surf (20 Sep, local time) - 5ft (1.6m), 11s period with NW swell.
The current surf forecast for Portstewart Strand at 10PM is: 1.6m 12s primary swell from a Northwest direction (forecast issued at 06:00pm September 20). The wind direction is predicted to be offshore and the swell rating is 3.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Sep) | - | - |
| Afternoon (20 Sep) | 6ft (1.8m) | 11s |
| Evening (20 Sep) | 5ft (1.6m) | 11s |
Table - waves today at Portstewart Strand. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 11mm), heaviest on Tue afternoon. Warm (max 22°C on Mon afternoon, min 11°C on Tue afternoon). Wind will be generally light. | |||||||||||||||||||
Sun 20 | Monday 21 | Tuesday 22 | |||||||||||||||||
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 | |
Swell Height Map | |||||||||||||||||||
Wave Height (m) Direction Period (s) | NW 11 | NW 11 | NW 12 | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 | NW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | NW 18 | NW 15 | NW 15 |
Wave Graph | |||||||||||||||||||
671 | 564 | 638 | 653 | 481 | 282 | 309 | 224 | 179 | 140 | 117 | 115 | 92 | 92 | 121 | 90 | 57 | 223 | 424 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | off | cross-off | cross-off | cross-off | cross | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | on | glassy | on | cross-on | glassy |
High Tide | 3:29PM1.15m | 3:56AM1.03m | 4:25PM1.30m | 4:33AM1.16m | 4:57PM1.46m | ||||||||||||||
Low Tide | 9:57PM0.75m | 9:43AM0.65m | 10:51PM0.62m | 10:35AM0.50m | |||||||||||||||
— | — | — | — | — | 7:09 | — | — | — | — | — | — | — | 7:11 | — | — | — | — | — | |
— | 7:31 | — | — | — | — | — | — | — | 7:29 | — | — | — | — | — | — | — | 7:27 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 4 | 1 |
Temp °C | 14 | 13 | 13 | 13 | 14 | 14 | 16 | 19 | 22 | 21 | 18 | 17 | 17 | 16 | 13 | 13 | 13 | 11 | 11 |
Feels °C | 10 | 10 | 10 | 8 | 9 | 11 | 15 | 18 | 21 | 21 | 16 | 15 | 15 | 13 | 11 | 13 | 12 | 9 | 10 |
Swell 1 Height (m) Direction Period (s) | NW 11 | NW 11 | NW 12 | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 | NW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | NW 15 | NW 15 |
671 | 564 | 638 | 653 | 481 | 282 | 309 | 224 | 179 | 140 | 117 | 115 | 92 | 92 | 121 | 90 | 57 | 223 | 424 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | NNW 8 | NNW 7 | — | — | — | — | — | — | — | NW 12 | — | NW 19 | NW 18 | WNW 9 | WNW 9 |
— | — | — | — | 7 | 26 | — | — | — | — | — | — | — | 6 | — | 15 | 49 | 32 | 32 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NW 15 | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 8 | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 163 | 7 | 0 | 2 | 2 | 2 | 2 | 0 | 2 | 0 | 0 | 0 | 2 | 2 | 7 | 0 | 116 | 69 | 0 |
Best forecast wave conditions in Londonderry | |||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||
Header Global | |||||||||||||||||||
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