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Surf Forecasts:

Dinas Dinlle surf break

Dinas Dinlle surfForecast / Wales – Lleyn / UK

information circle12 Day Weather and Surf, issued 11 pm Thursday 12 Mar 2026 GMT
Forecast update in hr  min  s Forecast update imminent
Dinas Dinlle surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Dinas Dinlle sea temperature is
8.2° C
 (Which is slightly warmer than usual)

Best Forecast Surf Conditions for Dinas Dinlle this week:

The surf forecast for Dinas Dinlle over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Mar 18) at 6AM. The primary swell is predicted to be 1.4m and 8s period with a secondary swell of 0.4m and 11s. Another secondary swell of 0.7m and 11s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Dinas Dinlle in the next 12 days are 3.0m 9s and forecast to arrive on Friday (Mar 13) at 9AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Wednesday (Mar 18) at 3AM.

Wave TypeTime (GMT) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Wed 18th Mar)4.5ft (1.4m) 8s
Best Surf 6AM (Wed 18th Mar)4.5ft (1.4m) 8s
Most Powerful 9AM (Fri 13th Mar)10ft (3.0m) 9s

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

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

Short Range Forecast Moderate rain (total 15mm), heaviest on Thu night. Mild temperatures (max 9°C on Sun morning, min 4°C on Fri night). Winds decreasing (near gales from the WSW on Thu night, light winds from the SW by Sat night).

Days 3-6 Weather Summary Light rain (total 7mm), mostly falling on Mon morning. Very mild (max 11°C on Tue afternoon, min 5°C on Sun night). Winds decreasing (strong winds from the W on Sun night, light winds from the WNW by Tue night).

Friday
13
Saturday
14
Sunday
15
Monday
16
Tuesday
17
Wednesday
18
Thu
19
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
2.5
WSW
3
WSW
2.1
WSW
1.1
SW
1
W
0.9
WSW
0.6
SW
1.5
SW
1.6
WSW
2.1
W
1.6
WSW
2.2
SW
2.3
SW
2.4
SW
1.9
SW
1.7
SW
1.1
SW
0.8
SW
0.6
SW
0.4
SW
0.4
SW
Period(s) (?)1097954866767888888887
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1249147440118645344613316239218444058269949838115584392014
Wind
(km/h)
40
WSW
45
WSW
35
WSW
20
NW
15
W
15
WSW
10
WSW
30
SSW
35
W
35
W
30
SW
35
SSW
35
S
40
S
40
S
10
SW
10
NE
10
NNE
15
NE
10
NE
10
NNE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
onononcross-
on		ononcross-
on		cross-
on		ononcross-
on		cross-
on		crosscrosscrosscross-
on		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off
High Tide
/ height (m)
4:09AM
2.40
5:15PM
2.36
5:43AM
2.60
6:16PM
2.57
6:30AM
2.89
6:53PM
2.82
7:03AM
3.20
7:23PM
3.08
7:33AM
3.52
7:53PM
3.35
8:04AM
3.81
8:25PM
3.60
8:37AM
4.04
Low Tide
/ height (m)
9:54PM
1.61
11:08AM
1.50
11:42PM
1.47
12:29PM
1.24
12:44AM
1.17
1:16PM
0.90
1:26AM
0.86
1:55PM
0.55
2:03AM
0.56
2:30PM
0.23
2:39AM
0.30
3:06PM
-0.03
3:15AM
0.11
3:41PM
-0.17
Friday
13
Saturday
14
Sunday
15
Monday
16
Tuesday
17
Wednesday
18
Thu
19
Sunrise-6:37--6:35--6:33--6:30--6:28--6:26--6:22-
Sunset--6:15--6:17--6:20--6:22--6:23--6:25--6:27
rain showers
light rain
light rain
rain showers
rain showers
cloud
cloud
light rain
light rain
rain showers
light rain
light rain
cloud
cloud
cloud
light rain
cloud
part cloud
part cloud
cloud
cloud
Rain (mm)
51221--22122---2-----
Temp. °C65567879868991011107981212
Feels °C (?)-3-6-3123110-11222354641010
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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View detailed surf forecast for Dinas Dinlle at:
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Information about the Dinas Dinlle Surf forecast

The above surf forecast table for Dinas Dinlle provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Dinas Dinlle can be found by selecting the local surf guide option on the grey menu. Our Dinas Dinlle 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 (Dinas Dinlle) 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 Dinas Dinlle 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.

Are you planning a holiday in Lleyn Peninsula? If you are looking for accommodation near Dinas Dinlle, camping, hotels and holiday cottages in Lleyn Peninsula, consider staying in Anglesey which is 22 km (14 miles) away. Other places in and around Lleyn Peninsula where you can find information about places to rent, and car hire include Porthmadog which is 24 km (15 miles) away, Bangor, Holyhead and Llandudno.

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