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Surf Forecasts:

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

information circle12 Day Weather and Surf, issued 5 am Saturday 10 Jan 2026 GMT
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
10.0° C
 (Which is 1.1°C warmer than normal for this time of year)

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

The surf forecast for Whistling Sands (Porth Oer) over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Jan 15) at 6PM. The primary swell is predicted to be 0.4m and 18s period with a secondary swell of 0.9m and 8s. 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 12 days are 4.0m 10s and forecast to arrive on Sunday (Jan 11) at 9PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.2m 6s period and expected on Sunday (Jan 11) at 3AM.

Wave TypeTime (GMT) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Thu 15th Jan)1.5ft (0.4m) 18s
Best Surf 6PM (Thu 15th Jan)1.5ft (0.4m) 18s
Most Powerful 9PM (Sun 11th Jan)13ft (4.0m) 10s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Moderate rain (total 14mm), heaviest on Sun afternoon. Very mild (max 11°C on Sun afternoon, min 6°C on Sat morning). Winds increasing (light winds from the WSW on Sat morning, gales from the S by Sun afternoon).

Days 3-6 Weather Summary Moderate rain (total 12mm), heaviest on Tue morning. Mild temperatures (max 9°C on Tue morning, min 6°C on Tue morning). Winds decreasing (near gales from the SSW on Wed morning, light winds from the ENE by Thu night).

Saturday
10
Sunday
11
Monday
12
Tuesday
13
Wednesday
14
Thursday
15
Friday
16
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
1
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.8
SW
0.8
SW
0.1
SW
3
SSW
3
SSW
3.5
SW
2.5
SW
2.3
SW
2.2
SW
2
SW
1.2
SW
0.8
SW
0.8
SW
1.6
SW
2.3
SW
1.5
SW
1.2
SW
0.4
WSW
0.4
SW
0.6
WSW
0.6
WSW
Period(s) (?)8913881010111110101010588817161616
Wave
Graph
(?)Metric surfscale
Energy kJ (?)75937127511211997125111711109865313136136066929719611967179169
Wind
(km/h)
15
NW
15
SSW
50
SSE
65
SSE
60
SSE
60
SW
40
SW
30
SSW
40
S
35
S
35
W
50
W
40
SW
50
WSW
45
W
35
WSW
20
SW
20
ESE
20
ENE
30
NNE
35
NNE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
oncross-
off		cross-
off		cross-
off		cross-
off		crosscrosscross-
off		cross-
off		cross-
off		cross-
on		cross-
on		crosscrosscross-
on		cross-
on		crossoffcross-
off		crosscross-
on
High Tide
/ height (m)
1:05PM
3.38
1:39AM
2.92
2:03PM
3.09
2:44AM
2.79
3:13PM
2.88
3:57AM
2.76
4:27PM
2.82
5:05AM
2.85
5:32PM
2.88
6:00AM
3.01
6:24PM
3.02
6:46AM
3.21
7:07PM
3.18
Low Tide
/ height (m)
8:05PM
1.01
8:10AM
1.26
8:55PM
1.22
9:13AM
1.41
10:00PM
1.36
10:35AM
1.46
11:17PM
1.37
11:56AM
1.35
12:24AM
1.26
12:56PM
1.16
1:14AM
1.08
1:42PM
0.94
1:55AM
0.88
Saturday
10
Sunday
11
Monday
12
Tuesday
13
Wednesday
14
Thursday
15
Friday
16
Sunrise8:27--8:26--8:26--8:25--8:25--8:23--8:22--
Sunset-4:23--4:25--4:27--4:29--4:30--4:31--4:34-
clear
part cloud
light rain
light rain
light rain
light rain
light rain
light rain
part cloud
mod rain
clear
part cloud
light rain
rain showers
part cloud
clear
clear
part cloud
cloud
cloud
mod rain
Rain (mm)
--125213-8--22------7
Temp. °C78891111101010977898897766
Feels °C (?)32-5-40-22422-2-4-1-2-20411-2-2
  • 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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View detailed surf forecast for Whistling Sands (Porth Oer) at:
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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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