Whistling Sands (Porth Oer) surfForecast / Wales – Lleyn / UK

information circle12 Day Weather and Surf, issued 12 am Wednesday 09 Jul 2025 BST
Forecast update in hr  min  s Forecast update imminent
Whistling Sands (Porth Oer) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Whistling Sands (Porth Oer) sea temperature is
14.5° C
(Which is normal for this time of year)


Best Forecast Surf Conditions for Whistling Sands (Porth Oer) this week:

The most powerful waves expected at Whistling Sands (Porth Oer) in the next 12 days are 0.2m 10s and forecast to arrive on Wednesday (Jul 16) at 7AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Tuesday (Jul 15) at 4AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 7AM (Wed 16th Jul)0.5ft (0.2m) 10s

Table - best surf conditions forecast for Whistling Sands (Porth Oer) over the next 12 days.

Updates in  hr  min  s Forecast update imminent
Wednesday
09
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sun
20
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.1
SW
0.1
SW
0.2
WNW
0.1
SW
0.1
W
0.1
W
0.1
W
0.1
SW
0.1
W
0.3
SSW
0.1
SW
0.2
WSW
0.1
SW
0.1
SW
0.1
SW
0.3
SW
0.6
SW
0.7
SW
0.6
SW
0.4
SSW
0.9
NNW
0.3
SW
0.3
SW
0.3
SW
0.3
SW
0.3
SW
0.2
WSW
0.2
WSW
0.3
SW
0.3
SW
Period(s) (?)6535---13-12-12-1414611812126798874766669888
Wave
Graph
(?)Metric surfscale
Energy (?)112100030303094139788313546651434796610141371712
Wind
(km/h)
10
S
10
N
10
N
5
W
5
SSW
5
W
5
ESE
5
SE
5
SW
5
NE
10
SSE
0
WSW
10
NE
5
ESE
10
NNW
20
ESE
15
E
10
NNE
15
ESE
15
ENE
10
NNE
15
SSE
10
SW
15
W
5
WNW
0
NNW
5
NNE
5
NNE
5
NE
15
NNW
10
SSE
20
ENE
20
ENE
15
NE
5
NE
25
N
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
on
cross-
on
glassglasscross-
on
glassglassglassglassoffglasscrossoffoncross-
off
cross-
off
crossoffcross-
off
crosscross-
off
crosscross-
on
glassglassglasscrosscross-
off
cross-
on
offcross-
off
cross-
off
crosscrosscross-
on
High Tide
/ height (m)
8:10AM
3.26
8:29PM
3.48
8:48AM
3.39
9:07PM
3.67
9:25AM
3.50
9:44PM
3.84
10:02AM
3.58
10:21PM
3.98
10:40AM
3.63
10:59PM
4.07
11:20AM
3.63
11:38PM
4.09
12:02PM
3.59
12:21AM
4.04
12:47PM
3.50
1:08AM
3.90
1:38PM
3.38
2:00AM
3.70
2:36PM
3.25
3:03AM
3.49
3:43PM
3.17
4:15AM
3.34
4:56PM
3.19
Low Tide
/ height (m)
2:44AM
0.91
3:00PM
0.84
3:28AM
0.73
3:41PM
0.69
4:09AM
0.57
4:20PM
0.58
4:49AM
0.45
4:57PM
0.51
5:29AM
0.38
5:35PM
0.49
6:09AM
0.35
6:13PM
0.53
6:50AM
0.38
6:53PM
0.62
7:32AM
0.46
7:36PM
0.75
8:18AM
0.59
8:24PM
0.89
9:10AM
0.75
9:23PM
1.03
10:12AM
0.90
10:38PM
1.10
11:27AM
0.98
Wednesday
09
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sun
20
Sunrise-5:03--5:05--5:07--5:07--5:09--5:09--5:11--5:13--5:13--5:15--5:16--5:18-
Sunset--9:42--9:40--9:39--9:39--9:38--9:37--9:37--9:36--9:34--9:32--9:31--9:30
part cloudpart cloudclearclearclearclearclearclearclearclearclearclearclearclearclearclearclearclearclearclearclearpart cloudcloudcloudheavy raincloudpart cloudclearpart cloudpart cloudlight rainmod rainrain showerslight rainclearrain showers
Rain (mm)
------------------------17-----3911-1
Temp. °C151618181819192022222324242426272527282528231616151516161720191718171717
Feels °C (?)131518191819202122222425232525252424252427231614141617161718171516151613

Short Range Forecast: Mostly dry. Warm (max 22°C on Fri afternoon, min 15°C on Tue night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 27°C on Sun night, min 21°C on Fri night). Wind will be generally light.

Days 6-9 Weather Summary Moderate rain (total 17mm), heaviest on Wed night. Warm (max 28°C on Mon night, min 14°C on Wed night). Wind will be generally light.

Long Range Forecast: Moderate rain (total 15mm), heaviest on Sat morning. Warm (max 20°C on Fri afternoon, min 15°C on Thu night). Winds increasing (calm on Fri morning, fresh winds from the NNE by Sun afternoon).

  • 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 Whistling Sands (Porth Oer) Surf forecast

The above surf forecast table for Whistling Sands (Porth Oer) provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Whistling Sands (Porth Oer) can be found by selecting the local surf guide option on the grey menu. Our Whistling Sands (Porth Oer) 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 (Whistling Sands (Porth Oer)) 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 Whistling Sands (Porth Oer) 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 Whistling Sands (Porth Oer), camping, hotels and holiday cottages in Lleyn Peninsula, consider staying in Porthmadog which is 41 km (25 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 48 km (30 miles) away, Holyhead, Bangor and Aberystwyth.

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