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Surf Forecasts:
Llandanwg surfForecast / Wales – Mid / UK
48hr Weather and Surf, issued 12 pm Thursday 21 May 2026 BSTForecast update in hr min s Forecast update imminent
Llandanwg surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Llandanwg sea temperature is
12.6° C
(Which is 1.6°C warmer than normal for this time of year)How big are the waves at Llandanwg today?
The current surf forecast for Llandanwg at 6PM is: 0.7m 8s primary swell from a Southwest direction (forecast issued at 12:00pm May 21). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | 3.5ft (1.1m) | 7s |
| Afternoon (21 May) | 3ft (0.9m) | 7s |
| Evening (21 May) | 2.5ft (0.7m) | 8s |
Table - waves today at Llandanwg. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 17°C on Fri morning, min 13°C on Thu morning). Wind will be generally light. | ||||||||||||||||||||||||
Thu 21 | Friday 22 | Saturday 23 | Sun 24 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
SW 7 | SW 7 | SW 7 | SW 8 | SW 8 | SW 9 | WSW 9 | SW 10 | SW 10 | SW 10 | SW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | SW 9 | SW 9 | SW 9 | WSW 9 | WSW 9 | |
102 | 82 | 77 | 59 | 50 | 61 | 33 | 88 | 113 | 106 | 110 | 95 | 40 | 39 | 38 | 38 | 38 | 38 | 36 | 22 | 21 | 21 | 8 | 8 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | on | on | cross | cross | cross-off | cross | cross | cross-on | on | on | cross-on | cross-on | cross-on | on | cross-on | on | on | on | cross-on | cross-on | glassy | glassy | glassy | |
High Tide | 12:10PM3.82m | 00:33AM4.08m | 1:07PM3.44m | 1:33AM3.78m | 2:15PM3.15m | 2:44AM3.56m | ||||||||||||||||||
Low Tide | 7:11AM0.49m | 7:28PM0.91m | 8:12AM0.66m | 8:27PM1.08m | 9:16AM0.80m | 9:31PM1.20m | ||||||||||||||||||
 |  |  | |  | | | | | | | | |  |  | | | | | | | | | | |
 | 5:11 | — | — | — | — | — | 5:09 | — | — | — | — | — | — | — | 5:07 | — | — | — | — | — | — | — | 5:07 | — |
 | — | — | — | 9:15 | — | — | — | — | — | — | — | 9:16 | — | — | — | — | — | — | — | 9:17 | — | — | — | 9:20 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 13 | 15 | 16 | 16 | 16 | 16 | 15 | 15 | 16 | 17 | 17 | 15 | 14 | 13 | 13 | 13 | 14 | 15 | 16 | 15 | 14 | 13 | 13 | 13 |
10 | 13 | 14 | 15 | 15 | 14 | 13 | 14 | 15 | 16 | 17 | 15 | 13 | 12 | 13 | 12 | 13 | 14 | 15 | 14 | 13 | 13 | 12 | 12 | |
Swell 1 Height (m) Direction Period (s) | — | — | — | SW 8 | SW 8 | SW 9 | WSW 9 | SW 10 | SW 10 | SW 10 | SW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | SW 9 | SW 9 | SW 9 | WSW 9 | WSW 9 |
 kJ | — | — | — | 59 | 50 | 61 | 33 | 88 | 113 | 106 | 110 | 95 | 40 | 39 | 38 | 38 | 38 | 38 | 36 | 22 | 21 | 21 | 8 | 8 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | W 15 | W 15 | — | — | — | — | — | — | SW 4 | SW 4 | SW 4 | SW 4 | — | — | — | WSW 3 | WSW 4 | WSW 4 | WSW 4 | WSW 4 |
| kJ | — | — | — | — | 4 | 4 | — | — | — | — | — | — | 4 | 4 | 4 | 3 | — | — | — | 1 | 1 | 1 | 1 | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 14 | W 14 | W 14 | W 14 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 4 | 4 | 4 |
Wind waves Height (m) Direction Period (s) | SW 7 | SW 7 | SW 7 | — | — | — | SSW 4 | — | — | — | — | SW 4 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 102 | 82 | 77 | — | — | — | 7 | — | — | — | — | 4 | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 179 | 136 | 138 | 25 | 124 | 78 | 136 | 1 | 136 | 25 | 25 | 13 | 60 | 25 | 25 | 78 | 135 | 25 | 25 | 135 | 124 | 124 | 124 | 129 |
Best forecast wave conditions in Mid Wales | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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