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Dinas Dinlle Surf Forecast
/ Wales – Lleyn (14 surf breaks) /
Surf Forecasts:
Dinas Dinlle surfForecast / Wales – Lleyn / UK
48hr Weather and Surf, issued 12 am Monday 18 May 2026 BSTForecast update in hr min s Forecast update imminent
Dinas Dinlle surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Dinas Dinlle sea temperature is
11.9° C
(Which is 1.2°C warmer than normal for this time of year)How big are the waves at Dinas Dinlle today?
The current surf forecast for Dinas Dinlle at 4AM is: 1.0m 6s primary swell from a Southwest direction and 0.1m 12s secondary swell from a West direction (forecast issued at 12:00am May 18). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 3ft (0.9m) | 6s |
| Afternoon (18 May) | 2.5ft (0.8m) | 7s |
| Evening (18 May) | 3ft (0.9m) | 4s |
Table - waves today at Dinas Dinlle. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 20mm), heaviest during Mon night. Very mild (max 13°C on Tue afternoon, min 8°C on Sun night). Winds increasing (calm on Sun night, strong winds from the SW by Tue afternoon). | ||||||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | ||||||||||||||||||||||
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 | |
Swell Height Map |    |    |    | |||||||||||||||||||||
SW 5 | SW 6 | SW 6 | SW 7 | WSW 7 | SW 6 | SSW 4 | SSW 5 | SSW 6 | SW 7 | SSW 7 | SSW 7 | SW 6 | SW 7 | SW 7 | SW 8 | SW 8 | SW 8 | SW 8 | SW 6 | SW 6 | SW 7 | SW 7 | SW 6 | |
67 | 61 | 59 | 44 | 59 | 41 | 14 | 44 | 122 | 149 | 234 | 272 | 209 | 357 | 516 | 598 | 603 | 413 | 381 | 161 | 263 | 331 | 253 | 167 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | glassy | cross-on | cross | cross | cross | cross-off | cross-off | cross-off | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | |
High Tide | 10:11AM3.98m | 10:31PM4.02m | 10:59AM3.82m | 11:18PM3.94m | 11:49AM3.56m | |||||||||||||||||||
Low Tide | 4:58AM-0.02m | 5:21PM0.13m | 5:48AM-0.01m | 6:10PM0.28m | 6:41AM0.08m | 7:00PM0.48m | ||||||||||||||||||
 | |  |  | | | | | | | |  | | | | | |  |  | | | | | | |
 | — | 5:15 | — | — | — | — | — | — | — | 5:13 | — | — | — | — | — | — | — | 5:11 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 9:13 | — | — | — | — | — | — | — | 9:15 | — | — | — | — | — | — | — | 9:15 | — |
2 | 1 | 1 | — | — | — | — | 1 | 2 | 4 | 2 | 1 | 2 | 1 | — | 1 | 1 | — | — | — | — | — | — | — | |
Temp °C | 8 | 8 | 9 | 10 | 11 | 12 | 11 | 10 | 10 | 11 | 12 | 12 | 12 | 13 | 12 | 11 | 11 | 11 | 11 | 13 | 13 | 13 | 13 | 12 |
4 | 5 | 7 | 7 | 7 | 7 | 7 | 6 | 5 | 7 | 7 | 7 | 6 | 6 | 5 | 4 | 5 | 6 | 7 | 7 | 7 | 7 | 8 | 8 | |
Swell 1 Height (m) Direction Period (s) | W 12 | SW 6 | SW 6 | SW 7 | WSW 7 | — | SW 6 | SW 6 | SW 6 | SW 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | WSW 10 |
 kJ | 3 | 61 | 59 | 44 | 59 | — | 14 | 9 | 40 | 149 | — | — | — | — | — | — | — | — | — | — | — | — | — | 20 |
Swell 2 Height (m) Direction Period (s) | — | W 12 | — | NW 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 3 | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 5 | — | — | — | — | SW 6 | SSW 4 | SSW 5 | SSW 6 | SSE 4 | SSW 7 | SSW 7 | SW 6 | SW 7 | SW 7 | SW 8 | SW 8 | SW 8 | SW 8 | SW 6 | SW 6 | SW 7 | SW 7 | SW 6 |
| kJ | 67 | — | — | — | — | 41 | 13 | 44 | 122 | 39 | 234 | 272 | 209 | 357 | 516 | 598 | 603 | 413 | 381 | 161 | 263 | 331 | 253 | 167 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 261 | 32 | 32 | 32 | 273 | 234 | 277 | 277 | 302 | 302 | 234 | 325 | 315 | 278 | 277 | 277 | 279 | 273 | 273 | 474 | 279 | 348 | 273 | 89 |
Best forecast wave conditions in Lleyn Peninsula | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Ocean Swells (m)- Wind Speed (km/h)
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