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

information circle16 Day Weather and Surf, issued 6 am Friday 10 Apr 2026 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
9.4° C
(Which is 1.0°C warmer than 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 16 days are 4.5m 11s and forecast to arrive on Saturday (Apr 11) at 10PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Friday (Apr 10) at 7PM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful10PM (Sat 11th Apr)15ft (4.5m) 11s

Table - best surf conditions forecast for Whistling Sands (Porth Oer) over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast Moderate rain (total 18mm), heaviest on Fri night. Mild temperatures (max 9°C on Sat night, min 6°C on Fri night). Winds increasing (light winds from the SW on Fri night, severe gales from the SSW by Sat afternoon).

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

Friday
10
Saturday
11
Sunday
12
Monday
13
Tuesday
14
Wednesday
15
Thursday
16
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.6
SW
0.1
SW
3
SSW
2.2
SW
4
SW
4
WSW
2.4
SW
1.9
SW
1.5
SW
0.9
SW
0.8
SW
0.7
SW
0.6
SW
0.6
SW
0.6
SW
3
SW
2.5
SW
3
SW
2.5
SW
2.5
SW
1.8
SW
Period(s) (?)71487911888877899888877
Wave
Graph
(?)Metric surfscale
Energy kJ (?)39812204532303361372948125594655253506491892511651048662340
Wind
(km/h)
20
S
40
SSE
40
SSW
40
SW
70
SSW
55
SW
40
WSW
40
SSW
25
S
25
S
10
SW
15
SSW
20
SE
20
S
45
SSE
35
SSW
40
SSW
45
SW
35
SW
40
SSW
45
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
cross-
off
crosscross-
off
crosscrosscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
crosscrosscross-
off
cross-
off
High Tide
/ height (m)
2:33PM
2.50
3:22AM
2.65
4:30PM
2.46
Low Tide
/ height (m)
9:39PM
1.61
10:48AM
1.50
11:13PM
1.54
Friday
10
Saturday
11
Sunday
12
Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Sunrise6:33--6:31--6:28--6:26--6:24--6:20--6:18--
Sunset-8:07--8:09--8:12--8:13--8:15--8:16--8:19-
cloud
light rain
mod rain
clear
rain showers
rain showers
clear
light rain
rain showers
rain showers
clear
clear
part cloud
cloud
light rain
light rain
part cloud
clear
cloud
cloud
rain showers
Rain (mm)
-110-11-142----41----4
Temp. °C8887899888998101011101091010
Feels °C (?)-1-2-5-4-7-3-1-12366242421222
  • Map Icons:
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  • 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 16 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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