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Surf Forecasts:
Tywyn surfForecast / Wales – Mid / UK
48hr Weather and Surf, issued 11 pm Wednesday 10 Dec 2025 GMTForecast update in hr min s Forecast update imminent
Tywyn surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Tywyn sea temperature is
9.1° C
(Which is 1.6°C colder than average for this time of year)How big are the waves at Tywyn today?
The current surf forecast for Tywyn at 2AM is: 1.4m 7s primary swell from a Southwest direction and 0.5m 11s secondary swell from a West-southwest direction, 0.4m 14s secondary swell from a West-southwest direction (forecast issued at 11:00pm December 10). The wind direction is predicted to be cross-shore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Dec) | 5ft (1.6m) | 9s |
| Afternoon (11 Dec) | 5ft (1.6m) | 11s |
| Evening (11 Dec) | 4.5ft (1.4m) | 13s |
Table - waves today at Tywyn. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 11 | Friday 12 | Saturday 13 | ||||||||||||||||||||||
| 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 | 9 AM | 12 PM | 3 PM | 6 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 11 | 7 | 7 | 9 | 9 | 10 | 11 | 12 | 13 | 13 | 13 | 14 | 14 | 14 | 19 | 13 | 13 | 13 | 17 | 6 | 7 | 8 | 9 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 624 | 168 | 205 | 379 | 446 | 517 | 584 | 769 | 653 | 528 | 408 | 351 | 351 | 269 | 739 | 326 | 395 | 395 | 911 | 112 | 293 | 554 | 883 | 1135 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross | cross | cross | cross | cross | cross | cross- off | cross | cross- on | cross- on | cross- on | glass | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross | cross | cross- on | cross- on | cross- on |
High Tide / height (m) | 12:14AM 3.27 | 12:38PM 3.66 | 1:17AM 3.02 | 1:44PM 3.39 | 2:31AM 2.90 | 2:57PM 3.24 | ||||||||||||||||||
Low Tide / height (m) | 7:17PM 0.70 | 7:23AM 1.10 | 8:13PM 0.89 | 8:19AM 1.25 | 9:11PM 1.03 | 9:21AM 1.35 | ||||||||||||||||||
Thursday 11 | Friday 12 | Saturday 13 | ||||||||||||||||||||||
| Sunrise | - | - | - | - | 8:15 | - | - | - | - | - | - | - | 8:17 | - | - | - | - | - | - | - | 8:18 | - | - | - |
| Sunset | - | - | - | - | - | - | 4:00 | - | - | - | - | - | - | - | 4:00 | - | - | - | - | - | - | - | 4:00 | - |
 | |  | |  |  | | | |  | |  |  | |  | |  | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | 1 | 4 | 1 | - | - | 1 | - | - | - | - | - | - | - | - | 1 |
| Temp. °C | 10 | 10 | 10 | 10 | 10 | 12 | 12 | 11 | 11 | 10 | 8 | 8 | 8 | 9 | 10 | 9 | 9 | 9 | 8 | 8 | 9 | 10 | 10 | 11 |
| Feels °C (?) | 4 | 4 | 3 | 2 | 3 | 4 | 5 | 5 | 6 | 7 | 3 | 6 | 6 | 5 | 5 | 4 | 4 | 4 | 3 | 2 | 1 | 1 | 1 | 2 |
- 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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