Porth Nefyn Surf Break
Lat Long: 52.94° N 4.53° W

Porth Nefyn Surf Forecast and Surf Report

Weather Forecast for Porth Nefyn

Issued: 6 pm 08 Jun 2026 (local time)

Forecast update in  hr  min

Today's Porth Nefyn sea temperature is
14.2° C

2.0°C warmer than normal for this time of year

Porth Nefyn surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Porth Nefyn surf forecast from 9 Jun 2026:

  • Most powerful swell: Friday 12 Jun, 1AM (local time) - 5ft (1.5m), 7s period, WSW swell with 234 kJ wave energy.

Best Forecast Surf Conditions for Porth Nefyn this week:

The most powerful waves expected at Porth Nefyn in the next 16 days are 1.5m 7s and forecast to arrive on Friday (Jun 12) at 1AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Tuesday (Jun 09) at 1PM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 1AM (Fri 12th Jun)5ft (1.5m) 7s

Table - best surf conditions forecast for Porth Nefyn over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 20mm), heaviest during Thu morning. Very mild (max 13°C on Tue afternoon, min 10°C on Mon night). Winds decreasing (fresh winds from the WSW on Tue morning, light winds from the W by Wed night).

Days 5-7 Weather Summary

Light rain (total 2mm), mostly falling on Thu afternoon. Warm (max 22°C on Sun morning, min 14°C on Thu afternoon). Winds decreasing (fresh winds from the WSW on Thu afternoon, calm by Sat morning).

Mon
8
Tuesday
9
Wednesday
10
Thursday
11
Friday
12
Saturday
13
Sunday
14
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.3
NW
4
1.4
SW
6
1.4
WSW
6
1.5
WSW
6
1.1
WSW
4
1.1
WSW
5
1.1
WSW
5
0.6
SW
6
0.1
NW
4
1.5
SW
7
1.5
WSW
7
0.9
SW
7
0.8
SW
7
0.8
SW
6
0.1
W
11
0.1
W
11
0.4
SW
4
0.1
W
15
0.1
W
11
0.4
SW
6
0.1
W
13
Wave Graph
Metric surfscale
Energy kJ
3
157
0
0
52
48
52
31
1
189
234
77
57
46
2
2
4
5
2
11
3
Wind (km/h)
30
SW
30
WSW
40
WSW
30
WSW
20
W
30
W
20
W
15
W
35
S
35
WSW
25
WSW
20
WSW
20
SW
10
WNW
5
NE
10
SSW
10
ESE
15
SSE
10
S
10
SE
5
SE
Wind State
cross-off
cross
cross
cross
cross-on
cross
cross
cross
off
cross
cross
cross
cross-off
cross-on
glassy
cross-off
cross-off
off
cross-off
off
cross-off
High Tide
3:19AM3.01m
4:07PM2.70m
4:26AM3.06m
5:14PM2.86m
5:31AM3.19m
6:12PM3.09m
6:30AM3.38m
7:04PM3.35m
7:25AM3.57m
7:54PM3.60m
8:17AM3.73m
8:42PM3.82m
9:08AM3.82m
Low Tide
9:50PM1.16m
10:38AM0.88m
10:52PM1.15m
11:38AM0.79m
11:59PM1.05m
12:40PM0.67m
1:05AM0.87m
1:40PM0.53m
2:06AM0.63m
2:36PM0.38m
3:03AM0.37m
3:29PM0.27m
3:56AM0.14m
part cloud
rain showers
part cloud
rain showers
light rain
rain showers
part cloud
part cloud
mod rain
light rain
cloud
cloud
part cloud
part cloud
part cloud
clear
part cloud
clear
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:54
4:52
4:52
4:52
4:52
4:52
4:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:39
9:40
9:40
9:42
9:43
9:43
9:44
9:45
 mm
5
2
4
1
8
2
Temp °C
12
12
12
13
13
12
13
13
13
15
15
15
18
19
16
18
20
22
23
22
23
Feels °C
5
6
5
7
8
6
9
10
9
11
11
12
15
17
17
19
19
22
23
22
24
Swell 1
Height (m)
Direction
Period (s)
0.3
NW
4
0.6
SW
6
0.1
NW
4
0.9
SW
7
0.3
NW
4
0.8
SW
6
0.1
W
11
0.4
SW
4
0.1
SW
5
0.1
W
8
0.4
SW
6
0.2
SSW
5
Energy kJ
3
31
1
77
3
46
2
4
1
1
11
2
Swell 2
Height (m)
Direction
Period (s)
0.5
NW
5
0.1
W
11
0.1
W
11
0.1
SW
6
0.1
W
13
0.1
W
13
Energy kJ
11
2
2
1
4
3
Swell 3
Height (m)
Direction
Period (s)
0.1
W
11
0.1
W
15
0.1
W
11
0.1
W
10
0.1
W
13
Energy kJ
2
5
2
2
3
Wind waves
Height (m)
Direction
Period (s)
0.9
SW
4
1.4
SW
6
1.4
WSW
6
1.5
WSW
6
1.1
WSW
4
1.1
WSW
5
1.1
WSW
5
0.4
WNW
4
1.4
SW
5
1.5
SW
7
1.5
WSW
7
0.8
SW
7
0.6
SSW
6
0.5
SW
5
0.3
SSW
3
0.4
SSW
4
Energy kJ
25
157
126
134
52
48
52
5
106
189
234
57
22
13
1
5
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
3
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
287
287
287
537
288
274
476
13
288
287
267
13
287
13
127
121
127
148
148
141
151
Best forecast wave conditions in Lleyn Peninsula
Rating
(10 max)
1
1
1
Best forecast wave conditions in United Kingdom
Rating
(10 max)
2
3
2
2
1
2
2
2
1
1
1
2
2
2
2
2
2
1
1
Header Global
Rating
(10 max)
6
9
6
5
5
9
9
6
6
5
5
7
8
6
5
4
9
5
4
4
4
  • 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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Information about the Porth Nefyn Surf forecast

The above surf forecast table for Porth Nefyn provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Porth Nefyn can be found by selecting the local surf guide option on the grey menu. Our Porth Nefyn 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 (Porth Nefyn) 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 Porth Nefyn 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 Porth Nefyn, camping, hotels and holiday cottages in Lleyn Peninsula, consider staying in Porthmadog which is 27 km (17 miles) away. Other places in and around Lleyn Peninsula where you can find information about places to rent, and car hire include Anglesey which is 35 km (22 miles) away, Holyhead, Bangor and Llandudno.

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