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

information circle16 Day Weather and Surf, issued 12 am Monday 13 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 slightly warmer than usual)

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

The surf forecast for Whistling Sands (Porth Oer) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Apr 13) at 4AM. The primary swell is predicted to be 1.0m and 8s period with a secondary swell of 0.2m and 3s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Whistling Sands (Porth Oer) in the next 16 days are 1.7m 14s and forecast to arrive on Thursday (Apr 16) at 4PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Tuesday (Apr 14) at 7AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Mon 13th Apr)3.5ft (1.0m) 8s
Best Surf 4AM (Mon 13th Apr)3.5ft (1.0m) 8s
Most Powerful 4PM (Thu 16th Apr)5.5ft (1.7m) 14s

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 Light rain (total 7mm), mostly falling on Tue night. Very mild (max 12°C on Wed morning, min 8°C on Sun night). Winds increasing (light winds from the WSW on Sun night, strong winds from the SSE by Tue night).

Days 3-6 Weather Summary Some drizzle, heaviest during Fri night. Very mild (max 12°C on Fri morning, min 9°C on Wed night). Winds decreasing (strong winds from the SSW on Wed night, calm by Sat afternoon).

Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
Sun
19
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
1
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.1
SW
0.7
SW
0.9
SW
0.6
SW
0.7
SW
1.4
S
1.6
SSW
1.6
SSW
1.9
SW
2.5
SW
1.8
SW
1.7
WSW
1.2
SW
0.4
SW
0.4
SW
1
SW
1
SW
0.9
SW
0.6
SW
0.4
SW
0.7
N
Period(s) (?)888756677781413128671010104
Wave
Graph
(?)Metric surfscale
Energy kJ (?)16958824128166194257372645373112649535227885163803314
Wind
(km/h)
15
SW
25
S
20
SSW
20
SSE
35
SE
40
SSE
40
SSE
40
S
30
SSW
40
SW
30
SSW
25
SSW
25
SSE
35
SSE
25
SSW
20
S
10
SSW
10
WSW
15
N
20
N
25
NNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
off
cross-
off
cross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
crosscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
crosscross-
on
cross-
on
cross-
on
High Tide
/ height (m)
Low Tide
/ height (m)
Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
Sun
19
Sunrise-6:26--6:24--6:20--6:18--6:16--6:15--6:11-
Sunset--8:13--8:15--8:16--8:19--8:20--8:22--8:23
light rain
rain showers
part cloud
part cloud
light rain
cloud
rain showers
part cloud
part cloud
clear
clear
cloud
part cloud
part cloud
part cloud
rain showers
part cloud
cloud
clear
part cloud
clear
Rain (mm)
11--1-4--------1-----
Temp. °C1099891111121010101111121211101010911
Feels °C (?)634414444146667787736
  • 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 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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