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

information circle12 Day Weather and Surf, issued 6 am Monday 07 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 1.4m 6s and forecast to arrive on Tuesday (Jul 08) at 4AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 6s period and expected on Monday (Jul 14) at 1PM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 4AM (Tue 8th Jul)4.5ft (1.4m) 6s

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

Updates in  hr  min  s Forecast update imminent
Monday
07
Tuesday
08
Wednesday
09
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
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
Swell
Height Map
Wave Height (m) & direction (?)
0.3
SW
0.9
NW
1.4
NNW
0.9
NNW
0.2
WSW
0.1
SW
0.3
SW
0.1
W
0.1
SW
0.1
W
0.1
W
0.1
SW
1.2
SW
0.1
W
2.4
WSW
2.4
WSW
2.5
WSW
2
WSW
1.8
WSW
1.1
SW
0.8
SW
1.1
SW
1
SW
2.5
SSW
2.5
WSW
2.1
WSW
1.6
SW
1.3
SW
Period(s) (?)765656475------12--141151376768775678876
Wave
Graph
(?)Metric surfscale
Energy (?)753104633232100000030011783652546658034342313970650582970597301141
Wind
(km/h)
35
NNW
15
NW
30
NNW
20
NW
10
SW
10
SSW
0
E
0
WNW
10
SSW
0
NE
5
NW
5
NE
5
SSE
10
WNW
5
SW
5
SSE
10
WNW
5
N
5
SSW
10
WSW
10
SE
20
S
15
NW
25
NW
10
S
15
SSW
15
SSW
20
S
15
S
10
SE
10
SSW
10
WNW
10
SW
5
WNW
20
SSW
20
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
onononcrosscross-
off
glassglasscross-
off
glassonglassoffonglassglassonglassglasscrossoffcross-
off
ononcross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
oncrossoncross-
off
cross-
off
High Tide
/ height (m)
7:07PM
3.12
7:28AM
3.12
7:50PM
3.29
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
Low Tide
/ height (m)
1:25PM
1.14
1:56AM
1.09
2:16PM
1.00
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
Monday
07
Tuesday
08
Wednesday
09
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Sunrise5:01--5:03--5:03--5:05--5:07--5:07--5:09--5:09--5:11--5:13--5:13--5:15--
Sunset-9:44--9:43--9:42--9:40--9:39--9:39--9:38--9:37--9:37--9:36--9:34--9:32-
clearclearclearclearpart cloudpart cloudpart cloudclearclearclearclearclearclearclearclearclearpart cloudpart cloudclearpart cloudpart cloudpart cloudclearclearclearclearpart cloudpart cloudcloudrain showerspart cloudclearpart cloudpart cloudclearpart cloud
Rain (mm)
-----------------------------1------
Temp. °C131716131416161818172019212222212121192020191617141515151616141516151516
Feels °C (?)61210111215171918171918212122221921191920161413111213131414121515141213

Short Range Forecast: Mostly dry. Very mild (max 18°C on Wed afternoon, min 12°C on Tue morning). Winds decreasing (fresh winds from the NNW on Mon morning, calm by Wed morning).

Days 3-6 Weather Summary Mostly dry. Warm (max 22°C on Fri afternoon, min 17°C on Thu morning). Wind will be generally light.

Days 6-9 Weather Summary Mostly dry. Warm (max 20°C on Sun afternoon, min 13°C on Mon night). Wind will be generally light.

Long Range Forecast: Some drizzle, heaviest during Wed night. Very mild (max 16°C on Wed afternoon, min 14°C on Wed morning). Winds increasing (calm on Thu afternoon, fresh winds from the SE by Sat morning).

  • 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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