Snow-ForecastSnow-ForecastMountain-ForecastMountain-ForecastTide-ForecastTide-ForecastWeather-ForecastWeather-Forecast
Search by country, region, or break
Search by country, region, or break

Quick Links

Surf Forecasts:

Llandanwg surfForecast / Wales – Mid / UK

information circle12 Day Weather and Surf, issued 11 am Monday 12 Jan 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
7.5° C
 (Which is 1.3°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 Thursday (Jan 15) at 3PM. The primary swell is predicted to be 0.7m and 9s period with a secondary swell of 0.3m and 19s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Llandanwg in the next 12 days are 1.6m 11s and forecast to arrive on Monday (Jan 12) at 6PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Monday (Jan 19) at 3PM.

Wave TypeTime (GMT) & Date Wave Height & Period
Next good surf (1 star+) 3PM (Thu 15th Jan)2.5ft (0.7m) 9s
Best Surf 3PM (Thu 15th Jan)2.5ft (0.7m) 9s
Most Powerful 6PM (Mon 12th Jan)5ft (1.6m) 11s

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 19mm), heaviest on Tue morning. Very mild (max 10°C on Mon afternoon, min 5°C on Tue night). Mainly fresh winds.

Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Thu morning. Mild temperatures (max 8°C on Thu morning, min 5°C on Fri night). Wind will be generally light.

Monday
12
Tuesday
13
Wednesday
14
Thursday
15
Friday
16
Saturday
17
Sunday
18
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
1
1
0
0
1
1
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.9
SW
1.6
SW
1.6
SW
1.4
WSW
1.3
W
1
WNW
0.7
SW
1.1
SW
1.8
SW
1.2
SW
0.7
SW
0.3
WSW
0.4
SW
0.7
SW
0.4
WSW
0.6
WSW
0.5
SW
0.4
SW
0.2
WSW
0.2
WSW
0.2
WSW
Period(s) (?)1112111155105899178716998779
Wave
Graph
(?)Metric surfscale
Energy kJ (?)8066985894509760104493932157959255197533717558
Wind
(km/h)
30
SSW
30
SSW
30
SSW
30
WSW
25
WNW
20
WNW
15
SW
25
S
30
S
15
SSW
5
S
5
NW
15
SSE
20
SSE
15
ESE
15
E
10
ENE
10
NNE
5
NE
5
SSE
10
ESE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		ononcross-
on		cross-
on		cross-
on		oncross-
on		cross-
on		cross-
on		glassglasscrosscrosscross-
off		cross-
off		offoffglasscross-
on		cross-
off
High Tide
/ height (m)
3:00PM
3.02
3:46AM
2.90
4:17PM
2.97
4:54AM
3.02
5:20PM
3.07
5:48AM
3.21
6:10PM
3.24
6:32AM
3.45
6:52PM
3.43
7:11AM
3.69
7:29PM
3.61
7:47AM
3.93
8:04PM
3.78
Low Tide
/ height (m)
9:42PM
1.47
10:16AM
1.58
11:04PM
1.50
11:49AM
1.50
12:19AM
1.40
12:53PM
1.30
1:11AM
1.21
1:40PM
1.07
1:53AM
1.00
2:20PM
0.84
2:30AM
0.80
2:57PM
0.65
Monday
12
Tuesday
13
Wednesday
14
Thursday
15
Friday
16
Saturday
17
Sunday
18
Sunrise8:23--8:22--8:22--8:21--8:19--8:18--8:18--
Sunset-4:24--4:25--4:28--4:30--4:30--4:32--4:35-
light rain
rain showers
rain showers
rain showers
clear
clear
cloud
light rain
rain showers
light rain
cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
part cloud
Rain (mm)
2316---162-----------
Temp. °C9109876678887786787665
Feels °C (?)342210112565232354442
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Latest Updates

The World’s Most Inconsistent Waves
Ben Mondy

The World’s Most Inconsistent Waves

Huntington, Dribbleton, Virginia, Holland and the Superbank! We recently had a look at the world’s most consistent waves. This was based on the combination of swells and wind directed at 7,000 surf spots, as compiled from our data since 2006. Those stats, represented in easy-to-read graphics, are located under each wave’s spot guides, with historical swell and wind breakdowns available by month, season, and year. There is also an offshore filter, which shows how often the swells come with clean

Read more

Read more

Discover more articles and updates in the Greenroom.

submit an eyeball surf report

Quick surf report for Llandanwg:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

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:
surf-forecast.com

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.

Nearest locationNearest
Nearest locationNearest
Nearest locationNearest