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Surf Forecasts:
Harlech surfForecast / Wales – Mid / UK
48hr Weather and Surf, issued 11 am Monday 15 Dec 2025 GMTForecast 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
9.4° C
(Which is slightly cooler than normal)How big are the waves at Harlech today?
The current surf forecast for Harlech at 6PM is: 0.7m 10s primary swell from a West-southwest direction and 0.2m 3s secondary swell from a North-northwest direction (forecast issued at 11:00am December 15). The wind direction is predicted to be cross-offshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Dec) | 3.5ft (1.1m) | 10s |
| Afternoon (15 Dec) | 2.5ft (0.8m) | 10s |
| Evening (15 Dec) | 2ft (0.6m) | 9s |
Table - waves today at Harlech. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 14 | 8 | 8 | 8 | 8 | 15 | 5 | 7 | 8 | 8 | 9 | 10 | 10 | 10 | 22 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 243 | 163 | 125 | 83 | 59 | 41 | 31 | 30 | 25 | 37 | 19 | 19 | 19 | 21 | 22 | 77 | 240 | 447 | 558 | 763 | 928 | 480 | 298 | 263 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | glass | cross- on | cross- off | cross | cross | cross | cross | glass | glass | glass | cross- on | cross | cross- off | cross- off | cross | cross | cross | cross | cross | cross | cross- on | cross- on | cross- off |
High Tide / height (m) | 5:01PM 3.32 | 5:30AM 3.34 | 5:48PM 3.44 | 6:12AM 3.53 | 6:30PM 3.57 | |||||||||||||||||||
Low Tide / height (m) | 11:31AM 1.32 | 12:02AM 1.12 | 12:26PM 1.19 | 12:47AM 1.06 | 1:11PM 1.05 | 1:27AM 0.98 | ||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| Sunrise | 8:22 | - | - | - | - | - | - | - | 8:22 | - | - | - | - | - | - | - | 8:22 | - | - | - | - | - | - | - |
| Sunset | - | - | 4:00 | - | - | - | - | - | - | - | 4:00 | - | - | - | - | - | - | - | 4:00 | - | - | - | - | - |
 | | |  | |  | |  |  | | |  | | | | | | | |  | | | | | |
Rain (mm) | 2 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | 3 | 4 | 8 | 7 | 1 | - | 1 |
| Temp. °C | 10 | 9 | 9 | 9 | 9 | 8 | 7 | 7 | 8 | 8 | 8 | 7 | 7 | 6 | 6 | 7 | 8 | 9 | 9 | 10 | 10 | 10 | 10 | 9 |
| Feels °C (?) | 10 | 8 | 7 | 6 | 7 | 5 | 4 | 4 | 6 | 6 | 6 | 5 | 4 | 2 | 1 | 1 | 1 | 2 | 1 | 3 | 4 | 7 | 7 | 6 |
- Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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