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Surf Forecasts:
Llangrannog surfForecast / Wales – Mid / UK
48hr Weather and Surf, issued 12 pm Monday 18 May 2026 BSTForecast update in hr min s Forecast update imminent
Llangrannog surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Llangrannog sea temperature is
12.1° C
(Which is slightly warmer than usual)How big are the waves at Llangrannog today?
The current surf forecast for Llangrannog at 6PM is: 0.7m 6s primary swell from a West-southwest direction and 0.1m 10s secondary swell from a West direction (forecast issued at 12:00pm May 18). An open ocean swell of 0.4m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 3ft (0.9m) | 7s |
| Afternoon (18 May) | 2.5ft (0.7m) | 7s |
| Evening (18 May) | 2.5ft (0.7m) | 6s |
Table - waves today at Llangrannog. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 16mm), heaviest on Mon night. Very mild (max 15°C on Wed morning, min 10°C on Mon morning). Winds increasing (light winds from the SW on Mon morning, fresh winds from the SSE by Mon night). | ||||||||||||||||||||||||
Mon 18 | Tuesday 19 | Wednesday 20 | Thu 21 | |||||||||||||||||||||
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 | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
WSW 7 | WSW 7 | SW 7 | WSW 6 | WSW 6 | SW 6 | SSW 7 | SW 7 | SW 8 | SW 8 | SW 8 | SW 8 | WSW 8 | WSW 9 | WSW 9 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 11 | SW 8 | SW 7 | |
66 | 40 | 44 | 37 | 34 | 42 | 134 | 137 | 145 | 253 | 346 | 418 | 481 | 512 | 484 | 1137 | 865 | 894 | 775 | 616 | 414 | 221 | 120 | 79 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | |
High Tide | 9:33AM4.33m | 9:54PM4.37m | 10:20AM4.16m | 10:40PM4.27m | 11:08AM3.88m | 11:29PM4.07m | ||||||||||||||||||
Low Tide | 4:29PM0.33m | 4:59AM0.20m | 5:19PM0.48m | 5:55AM0.31m | 6:12PM0.68m | 6:54AM0.47m | ||||||||||||||||||
 |  | | |  | | | | |  | | | |  | |  |  | | | |  | |  | | |
 | 5:18 | — | — | — | — | — | 5:18 | — | — | — | — | — | — | — | 5:16 | — | — | — | — | — | — | — | 5:15 | — |
 | — | — | — | 9:08 | — | — | — | — | — | — | — | 9:10 | — | — | — | — | — | — | — | 9:12 | — | — | — | 9:14 |
— | 1 | 1 | 1 | 2 | 2 | 3 | — | 2 | 1 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 10 | 10 | 12 | 11 | 11 | 11 | 12 | 12 | 13 | 14 | 13 | 12 | 12 | 12 | 11 | 12 | 13 | 15 | 15 | 14 | 12 | 12 | 13 | 13 |
7 | 6 | 8 | 6 | 5 | 4 | 7 | 7 | 7 | 7 | 6 | 5 | 5 | 6 | 5 | 7 | 7 | 9 | 9 | 9 | 9 | 8 | 9 | 9 | |
Swell 1 Height (m) Direction Period (s) | WSW 7 | WSW 7 | — | WSW 6 | WSW 6 | SW 6 | — | WSW 8 | WSW 8 | — | — | — | W 17 | W 16 | W 15 | — | — | — | — | — | WSW 12 | WSW 11 | WSW 11 | SW 7 |
 kJ | 66 | 40 | — | 37 | 34 | 42 | — | 22 | 34 | — | — | — | 23 | 20 | 161 | — | — | — | — | — | 265 | 221 | 38 | 79 |
Swell 2 Height (m) Direction Period (s) | NW 4 | NNW 4 | — | W 10 | W 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WSW 10 |
| kJ | 2 | 1 | — | 2 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 21 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | SW 7 | SSW 3 | S 4 | SSE 4 | SSW 7 | SW 7 | SW 8 | SW 8 | SW 8 | SW 8 | WSW 8 | WSW 9 | WSW 9 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | S 3 | SW 8 | SSE 3 |
| kJ | — | — | 44 | 3 | 12 | 19 | 134 | 137 | 145 | 253 | 346 | 418 | 481 | 512 | 484 | 1137 | 865 | 894 | 775 | 616 | 414 | 6 | 120 | 2 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 198 | 343 | 326 | 324 | 343 | 362 | 362 | 362 | 382 | 368 | 368 | 356 | 356 | 357 | 362 | 367 | 390 | 482 | 362 | 184 | 25 | 25 | 131 | 113 |
Best forecast wave conditions in Mid Wales | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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