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Surf Forecasts:

Llandanwg surfForecast / Wales – Mid / UK

information circle12 Day Weather and Surf, issued 5 pm Monday 09 Feb 2026 GMT
Forecast 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
6.9° C
 (Which is 1.0°C colder than average for this time of year)

Best Forecast Surf Conditions for Llandanwg this week:

The surf forecast for Llandanwg over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Feb 10) at 3AM. The primary swell is predicted to be 0.5m and 10s period with a secondary swell of 0.2m and 21s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Llandanwg in the next 12 days are 3.0m 10s and forecast to arrive on Monday (Feb 16) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Friday (Feb 13) at 3PM.

Wave TypeTime (GMT) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Tue 10th Feb)1.5ft (0.5m) 10s
Best Surf 9AM (Fri 13th Feb)3ft (0.9m) 13s
Most Powerful 3PM (Mon 16th Feb)10ft (3.0m) 10s

Table - best surf conditions forecast for Llandanwg over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Moderate rain (total 13mm), heaviest on Wed afternoon. Mild temperatures (max 9°C on Mon afternoon, min 8°C on Mon night). Mainly fresh winds.

Days 3-6 Weather Summary A dusting of snow giving way to moderate rain (total 10mm) heaviest on Sat night. Mild temperatures (max 8°C on Thu afternoon, min 2°C on Fri night). Winds increasing (calm on Sat morning, strong winds from the SE by Sat night).

Mon
09
Tuesday
10
Wednesday
11
Thursday
12
Friday
13
Saturday
14
Sunday
15
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
1
1
0
0
0
1
1
1
2
2
1
1
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.4
WSW
0.5
SW
0.4
WSW
0.4
WSW
0.7
WSW
1.4
SW
2.1
WSW
1.3
WSW
0.9
WSW
1.2
WSW
1.3
WSW
0.9
WSW
0.7
WSW
0.5
WSW
0.4
SW
0.4
WSW
1.3
S
1.6
SW
1.6
WSW
1.4
SW
1.5
SSW
Period(s) (?)129181716141314131615131311131459667
Wave
Graph
(?)Metric surfscale
Energy kJ (?)5743114117215834152057823575175226914070458078405177110218
Wind
(km/h)
25
ESE
15
E
15
E
15
E
10
SSW
25
SW
30
SSW
10
SW
10
WNW
15
W
10
SSE
10
E
15
NE
20
NNE
5
ESE
10
SSW
30
SSE
25
SSE
10
SSW
15
SSW
20
SSE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		cross-
off		cross-
off		cross-
on		oncross-
on		oncrosscross-
on		cross-
on		cross-
off		offoffglassoncrosscrosscross-
on		oncross-
on
High Tide
/ height (m)
1:10AM
3.00
1:42PM
2.91
2:23AM
2.77
3:16PM
2.70
4:09AM
2.75
4:53PM
2.77
5:26AM
2.97
5:53PM
3.00
6:15AM
3.28
6:35PM
3.27
6:53AM
3.62
7:10PM
3.55
7:27AM
3.97
Low Tide
/ height (m)
7:18PM
1.39
7:35AM
1.51
8:12PM
1.63
8:54AM
1.70
9:51PM
1.75
11:08AM
1.70
11:50PM
1.62
12:33PM
1.44
12:51AM
1.33
1:22PM
1.12
1:33AM
1.02
2:00PM
0.80
2:09AM
0.73
Mon
09
Tuesday
10
Wednesday
11
Thursday
12
Friday
13
Saturday
14
Sunday
15
Sunrise--7:43--7:41--7:39--7:37--7:35--7:33--7:31
Sunset5:15--5:16--5:19--5:21--5:22--5:24--5:27--
part cloud
cloud
cloud
light rain
light rain
light rain
light rain
rain showers
cloud
rain showers
rain showers
part cloud
light rain
clear
part cloud
cloud
light snow
light rain
rain showers
rain showers
mod rain
Rain (mm)
---21253-31-1---3241010
Temp. °C999999999887534545878
Feels °C (?)3466743665440-411-30333
  • 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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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Llandanwg surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

View detailed surf forecast for Llandanwg at:
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Information about the Llandanwg Surf forecast

The above surf forecast table for Llandanwg provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Llandanwg can be found by selecting the local surf guide option on the grey menu. Our Llandanwg surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Llandanwg) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Llandanwg may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Llandanwg is 10 km (6 miles) from Porthmadog. If you plan a holiday in Mid Wales, look for hotels and other accommodation in Porthmadog. Porthmadog has rooms for a wide range of budgets as well as car hire and transport links.

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