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Surf Forecasts:

Llandanwg surfForecast / Wales – Mid / UK

information circle12 Day Weather and Surf, issued 5 pm Friday 30 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
6.8° C
 (Which is 1.4°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 Sunday (Feb 01) at 6PM. The primary swell is predicted to be 0.6m and 10s period with a secondary swell of 0.1m and 20s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Llandanwg in the next 12 days are 1.5m 16s and forecast to arrive on Saturday (Jan 31) at 12PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Tuesday (Feb 03) at 12AM.

Wave TypeTime (GMT) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Sun 1st Feb)2ft (0.6m) 10s
Best Surf 6PM (Sun 1st Feb)2ft (0.6m) 10s
Most Powerful12PM (Sat 31st Jan)5ft (1.5m) 16s

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 15mm), heaviest on Sat morning. Mild temperatures (max 8°C on Fri afternoon, min 4°C on Sun night). Winds decreasing (fresh winds from the E on Fri afternoon, calm by Sun night).

Days 3-6 Weather Summary Light rain (total 8mm), mostly falling on Thu morning. Mild temperatures (max 8°C on Mon night, min 5°C on Mon night). Winds decreasing (fresh winds from the E on Mon night, light winds from the SE by Wed afternoon).

Fri
30
Saturday
31
Sunday
01
Monday
02
Tuesday
03
Wednesday
04
Thursday
05
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
3
1
0
0
0
0
0
1
0
0
0
0
0
1
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.6
WSW
1
WSW
1.5
SW
1.5
WSW
0.9
WSW
0.7
WSW
0.6
WSW
0.6
WSW
0.4
SW
0.2
WSW
0.1
W
0.2
WSW
0.5
WSW
0.7
WSW
0.5
WSW
0.5
SW
0.4
SW
0.4
SW
0.4
SW
0.4
SW
0.4
WSW
Period(s) (?)171616161413101191515171616149998918
Wave
Graph
(?)Metric surfscale
Energy kJ (?)135646310601054330145657925224281512231153822211832130
Wind
(km/h)
25
ESE
25
E
20
SSE
25
WSW
15
SSW
10
W
10
W
10
E
15
ENE
20
E
35
E
30
ENE
25
ESE
15
E
30
SSE
20
SE
15
ESE
35
SE
30
ESE
20
E
20
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		cross-
on		oncross-
on		cross-
on		cross-
on		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		crosscrosscross-
off		crosscross-
off		cross-
off		cross-
off
High Tide
/ height (m)
6:03PM
3.70
6:29AM
4.00
6:57PM
3.95
7:19AM
4.35
7:45PM
4.15
8:05AM
4.62
8:29PM
4.26
8:48AM
4.77
9:10PM
4.29
9:28AM
4.78
9:50PM
4.21
10:08AM
4.64
10:28PM
4.06
10:46AM
4.38
Low Tide
/ height (m)
1:28AM
0.77
1:59PM
0.44
2:17AM
0.50
2:46PM
0.16
3:00AM
0.31
3:29PM
-0.01
3:38AM
0.21
4:08PM
-0.05
4:14AM
0.22
4:45PM
0.05
4:47AM
0.33
5:18PM
0.25
5:18AM
0.51
Fri
30
Saturday
31
Sunday
01
Monday
02
Tuesday
03
Wednesday
04
Thursday
05
Sunrise--8:00--8:00--7:58--7:56--7:54--7:52--7:50
Sunset4:55--4:58--5:00--5:01--5:04--5:06--5:07--
light rain
light rain
light rain
rain showers
rain showers
light rain
clear
clear
part cloud
part cloud
cloud
light rain
rain showers
clear
cloud
rain showers
rain showers
light rain
part cloud
cloud
cloud
Rain (mm)
144321-----11--213---
Temp. °C888888867785888888875
Feels °C (?)21334554222-3431341100
  • 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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