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Surf Forecasts:
Harlech surfForecast / Wales – Mid / UK
48hr Weather and Surf, issued 6 am Tuesday 19 May 2026 BSTForecast update in hr min s Forecast update imminent
Harlech surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Harlech sea temperature is
12.4° C
(Which is 1.5°C warmer than normal for this time of year)How big are the waves at Harlech today?
The current surf forecast for Harlech at 10AM is: 1.1m 7s primary swell from a Southwest direction (forecast issued at 06:00am May 19). The wind direction is predicted to be cross-shore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 May) | 3.5ft (1.1m) | 7s |
| Afternoon (19 May) | 4.5ft (1.4m) | 7s |
| Evening (19 May) | 6ft (1.8m) | 8s |
Table - waves today at Harlech. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 15mm), heaviest on Wed night. Very mild (max 16°C on Thu afternoon, min 11°C on Tue night). Winds decreasing (strong winds from the SW on Tue night, light winds from the SE by Thu night). | ||||||||||||||||||||||||
Tuesday 19 | Wednesday 20 | Thursday 21 | Fri 22 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 8 | WSW 8 | WSW 9 | WSW 9 | WSW 6 | WSW 6 | SW 6 | SW 6 | SW 6 | SW 6 | WSW 9 | SW 5 | SW 6 | SW 6 | SW 6 | SW 7 | SW 8 | SW 9 | |
61 | 122 | 140 | 194 | 225 | 277 | 406 | 513 | 449 | 370 | 129 | 164 | 147 | 139 | 95 | 58 | 67 | 49 | 51 | 64 | 47 | 53 | 50 | 68 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross-on | cross-on | cross | cross-off | cross-off | |
High Tide | 10:30AM4.48m | 10:50PM4.58m | 11:18AM4.19m | 11:39PM4.36m | 12:10PM3.82m | 00:33AM4.08m | ||||||||||||||||||
Low Tide | 5:19AM0.23m | 5:40PM0.52m | 6:13AM0.33m | 6:32PM0.71m | 7:11AM0.49m | 7:28PM0.91m | ||||||||||||||||||
 |  |  | | | | | |  |  |  | | | |  |  | | | | | | | | | |
 | 5:13 | — | — | — | — | — | — | — | 5:11 | — | — | — | — | — | — | — | 5:09 | — | — | — | — | — | — | 5:09 |
 | — | — | — | — | — | 9:13 | — | — | — | — | — | — | — | 9:14 | — | — | — | — | — | — | — | 9:15 | — | 9:16 |
3 | 3 | 1 | 2 | 1 | 1 | 2 | 2 | 1 | — | — | 1 | — | — | — | — | 1 | 3 | — | — | — | — | — | — | |
Temp °C | 12 | 12 | 12 | 12 | 13 | 12 | 11 | 11 | 11 | 11 | 12 | 12 | 13 | 12 | 12 | 12 | 12 | 13 | 14 | 15 | 16 | 16 | 15 | 15 |
8 | 7 | 8 | 7 | 7 | 6 | 4 | 4 | 6 | 6 | 8 | 7 | 9 | 8 | 9 | 9 | 9 | 9 | 11 | 13 | 14 | 15 | 14 | 14 | |
Swell 1 Height (m) Direction Period (s) | SW 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | WSW 10 | SW 6 | WSW 9 | WSW 5 | — | — | — | SW 7 | SW 8 | SW 9 |
 kJ | 61 | — | — | — | — | — | — | — | — | — | — | — | — | — | 20 | 58 | 67 | 23 | — | — | — | 53 | 50 | 68 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WSW 12 | WSW 10 | WSW 11 | WSW 11 | — | — | — | W 15 | W 15 | W 15 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 26 | 20 | 13 | 12 | — | — | — | 4 | 4 | 4 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WSW 9 | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 8 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSE 4 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 8 | WSW 8 | WSW 9 | WSW 9 | WSW 6 | WSW 6 | SW 6 | SW 6 | SW 6 | — | SW 5 | SW 5 | SW 6 | SW 6 | SW 6 | — | — | — |
| kJ | 10 | 122 | 140 | 194 | 225 | 277 | 406 | 513 | 449 | 370 | 129 | 164 | 147 | 139 | 95 | — | 47 | 49 | 51 | 64 | 47 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 329 | 329 | 365 | 344 | 285 | 284 | 285 | 285 | 303 | 300 | 279 | 337 | 292 | 263 | 43 | 61 | 61 | 207 | 207 | 137 | 142 | 61 | 80 | 0 |
Best forecast wave conditions in Mid Wales | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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