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

information circle12 Day Weather and Surf, issued 6 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
14.7° 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 0.7m 9s and forecast to arrive on Wednesday (Jul 16) at 7AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Monday (Jul 14) at 10AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 7AM (Wed 16th Jul)2.5ft (0.7m) 9s

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
Sunday
20
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
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
0.1
SW
0.1
SW
0.1
W
0.1
W
0.1
W
0.1
W
0.1
SW
0.1
W
0.1
SW
0.1
SW
0.2
SSW
0.4
SW
0.1
SW
0.4
SW
0.5
SW
0.7
SW
0.6
SW
0.5
SW
0.4
SW
0.4
SW
0.3
SW
0.4
SW
0.2
WSW
0.2
WSW
0.4
SW
0.4
SW
0.4
SW
0.3
WSW
0.4
SW
0.5
SW
Period(s) (?)5654--13-121212-1414111143126688777661110669886
Wave
Graph
(?)Metric surfscale
Energy (?)11110030333016466558163969533115126192215202023312730
Wind
(km/h)
5
N
10
NNW
5
SW
5
SSW
5
WSW
0
SE
5
SSE
5
SW
5
NNE
10
SE
0
W
15
E
15
ESE
10
SE
5
S
15
SSE
15
WSW
15
WSW
5
WSW
10
WSW
25
WNW
15
WNW
15
SSW
20
SSE
25
SSW
25
SSW
20
S
20
S
15
SSW
10
SSE
20
S
25
SSW
15
SW
15
SW
20
SSW
25
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
cross-
on
crossglassglassglassglassglassglassoffglasscross-
off
offoffcross-
off
cross-
off
crosscrosscrosscross-
on
cross-
on
cross-
on
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
cross-
off
crosscrosscross-
off
cross-
off
High Tide
/ height (m)
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)
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
12:03AM
1.04
Wednesday
09
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Sunrise5:03--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 cloudclearclearclearclearclearclearclearclearclearclearclearpart cloudpart cloudpart cloudpart cloudcloudheavy raincloudcloudpart cloudpart cloudclearpart cloudpart cloudpart cloudcloudpart cloudpart cloudcloudpart cloudpart cloudpart cloudpart cloudclearpart cloud
Rain (mm)
-----------------18------------------
Temp. °C161818171919202222232525252725202017151615141616171818171717161516151615
Feels °C (?)161819181919202222242724232524171818151511121414141515151617141214121311

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

Days 3-6 Weather Summary Moderate rain (total 18mm), heaviest on Mon night. Warm (max 27°C on Sun afternoon, min 14°C on Mon night). Wind will be generally light.

Days 6-9 Weather Summary Mostly dry. Very mild (max 18°C on Thu afternoon, min 14°C on Tue night). Winds increasing (light winds from the WSW on Tue morning, fresh winds from the WNW by Tue night).

Long Range Forecast: Mostly dry. Very mild (max 17°C on Fri morning, min 15°C on Sat afternoon). Wind will be generally light.

  • 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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