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Surf Forecasts:
Llangrannog surfForecast / Wales – Mid / UK
48hr Weather and Surf, issued 6 am Sunday 17 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 1.0°C warmer than normal for this time of year)How big are the waves at Llangrannog today?
The current surf forecast for Llangrannog at 2PM is: 0.9m 5s primary swell from a West-southwest direction and 0.1m 12s secondary swell from a West direction (forecast issued at 06:00am May 17). An open ocean swell of 0.4m 4s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 May) | 3.5ft (1.0m) | 4s |
| Afternoon (17 May) | 3ft (0.9m) | 5s |
| Evening (17 May) | 3.5ft (1.0m) | 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 15mm), heaviest on Mon night. Very mild (max 14°C on Tue morning, min 9°C on Sun night). Winds increasing (light winds from the WSW on Sun night, strong winds from the WSW by Tue afternoon). | ||||||||||||||||||||||||
Sunday 17 | Monday 18 | Tuesday 19 | Wed 20 | |||||||||||||||||||||
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 | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
W 4 | W 4 | W 5 | WSW 5 | WSW 5 | WSW 5 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | SW 6 | SW 6 | SW 6 | SSW 7 | SW 7 | SW 5 | WSW 6 | WSW 7 | WSW 8 | SW 8 | |
40 | 40 | 34 | 29 | 50 | 75 | 69 | 64 | 70 | 56 | 35 | 32 | 16 | 16 | 19 | 15 | 17 | 68 | 79 | 80 | 202 | 307 | 240 | 283 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross-on | cross-on | cross | cross-off | off | off | off | cross-off | cross-off | cross | cross | cross | cross-off | cross | |
High Tide | 8:47AM4.35m | 9:09PM4.36m | 9:33AM4.33m | 9:54PM4.37m | 10:20AM4.16m | 10:40PM4.27m | ||||||||||||||||||
Low Tide | 3:42PM0.23m | 4:07AM0.17m | 4:29PM0.33m | 4:59AM0.20m | 5:19PM0.48m | |||||||||||||||||||
 |  |  |  |  | |  |  | |  | | | | | | | | | | | | | | | |
 | 5:20 | — | — | — | — | — | — | — | 5:18 | — | — | — | — | — | — | — | 5:18 | — | — | — | — | — | — | 5:16 |
 | — | — | — | — | — | 9:07 | — | — | — | — | — | — | — | 9:08 | — | — | — | — | — | — | — | 9:10 | — | 9:12 |
— | — | 1 | — | 1 | 2 | 1 | 1 | 1 | — | — | — | — | — | — | 1 | 4 | 1 | — | 1 | — | — | — | 1 | |
Temp °C | 9 | 9 | 10 | 11 | 10 | 10 | 9 | 9 | 9 | 9 | 10 | 11 | 12 | 12 | 10 | 11 | 11 | 12 | 13 | 14 | 13 | 13 | 12 | 13 |
4 | 4 | 4 | 5 | 3 | 5 | 5 | 5 | 6 | 7 | 7 | 8 | 10 | 8 | 5 | 5 | 4 | 8 | 8 | 8 | 5 | 6 | 6 | 7 | |
Swell 1 Height (m) Direction Period (s) | W 13 | W 13 | W 14 | NNW 4 | NNW 4 | W 12 | W 11 | W 11 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | SW 6 | SW 6 | SW 6 | SW 7 | — | — | — | — | W 17 | W 16 |
 kJ | 3 | 3 | 4 | 8 | 2 | 3 | 3 | 2 | 70 | 56 | 35 | 32 | 16 | 16 | 19 | 15 | 17 | 12 | — | — | — | — | 6 | 20 |
Swell 2 Height (m) Direction Period (s) | — | — | W 12 | W 12 | — | W 15 | — | — | W 11 | W 11 | NNW 3 | — | — | — | W 10 | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 3 | 3 | — | 4 | — | — | 2 | 2 | 1 | — | — | — | 2 | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | W 8 | — | — | — | — | — | — | — | — | W 10 | W 10 | W 10 | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 1 | — | — | — | — | — | — | — | — | 2 | 2 | 2 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 4 | W 4 | W 5 | WSW 5 | WSW 5 | WSW 5 | WSW 6 | WSW 6 | — | — | — | — | — | — | SSE 2 | SSE 3 | SSE 4 | SSW 7 | SW 7 | SW 5 | WSW 6 | WSW 7 | WSW 8 | SW 8 |
| kJ | 40 | 40 | 34 | 29 | 50 | 75 | 69 | 64 | — | — | — | — | — | — | 1 | 8 | 27 | 68 | 79 | 80 | 202 | 307 | 240 | 283 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 222 | 73 | 345 | 345 | 348 | 348 | 245 | 349 | 74 | 57 | 57 | 184 | 184 | 131 | 345 | 367 | 362 | 382 | 395 | 399 | 390 | 349 | 349 | 356 |
Best forecast wave conditions in Mid Wales | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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