Whistling Sands (Porth Oer) Surf Break

Lat Long: 52.84° N 4.73° W

Whistling Sands (Porth Oer) Surf Forecast and Surf Report

Issued: 12 pm 25 Aug 2026 (local time)

Forecast update in  hr  min

Today's Whistling Sands (Porth Oer) sea temperature is
16.8°C
1.0° 

Whistling Sands (Porth Oer) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Whistling Sands (Porth Oer) surf forecast from 25 Aug 2026:

  • Most powerful swell: Tuesday 1 Sep, 4PM (local time) - 10ft (3.0m), 8s period, SW swell with 908 kJ wave energy.

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 3.0m 8s and forecast to arrive on Tuesday (Sep 01) 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 1.5m 6s period and expected on Tuesday (Sep 01) at 4AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 4PM (Tue 1st Sep)10ft (3.0m) 8s

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


The Lowdown

Alright, Rusty here. Let’s be straight with you – this is a tough one. We’ve only got Whistling Sands (Porth Oer) on the cards for the next 16 days, and frankly, it’s a barren run for anyone hoping to get a decent wave. The water temp is sitting around 62° with a 2° anomaly, so it’s a touch warmer than usual for this time of year, but that’s about the only good news.

From Tuesday 25th August right through to the end of the month, the swell is tiny – we’re talking 0.3 ft to 1 ft of short-period, weak junk. The combined energy is laughable, barely hitting double digits most days (11, 10, 23). It’s a classic “don’t bother” window. The wind is all over the shop, but even when it’s clean, there’s simply no water moving. The spot is sheltered and inconsistent at the best of times, and this is not the best of times.

We get a bit of a pulse on Friday 28th morning with 4 ft from the SSW, but it’s a short 8-second period and the wind is cross-shore, making it a choppy mess. The energy finally climbs to 157, but it’s still a poor surf call. Saturday 29th morning sees a 7 ft SW swell, but it’s a 6-second period with a 28 mph onshore wind – that’s just a washing machine. Not for paddling, maybe more for the kite crowd.

The first week of September looks rough. Tuesday 1st September has some real size – 8 ft in the morning, building to 10 ft in the afternoon, with energy readings of 531 and 908. That’s a lot of power, but it’s short-period stuff (7-8 seconds) and the wind is a near gale, even if it’s cross-off. That’s expert-only territory, and even then, it’s going to be a battle. The long gap in quality continues. By Wednesday 2nd, the swell is still 6 ft but the wind is straight onshore, messy and lumpy.

The second week is a write-off. The swell flirts with 5 ft to 7 ft but is always paired with strong, messy winds or gale-force gusts. The waves are blown out, choppy or just plain ugly. A few clean windows appear on Sunday 6th and Tuesday 8th September, but the swell is inconsistent and the winds are still hefty. The combined energy jumps around (469, 487) but it’s never paired with the right conditions.

Honestly, for 16 days, there is no standout. No day where you look at the swell, the wind, and the period and think “I’m going.” This is a place that struggles for consistency, and this forecast is a perfect example of that. It’s a blank run, pure and simple. Forecasts can change though, so don’t write it off completely, but for now, find another hobby.

Rusty.

Short Range Forecast

Light rain (total 6mm), mostly falling on Tue night. Warm (max 22°C on Wed night, min 16°C on Tue morning). Winds decreasing (strong winds from the E on Tue night, light winds from the NNE by Wed afternoon).

Days 4-6 Weather Summary

Heavy rain (total 23mm), heaviest during Sun morning. Very mild (max 18°C on Sat night, min 14°C on Sun night). Winds increasing (light winds from the W on Sat night, near gales from the W by Sun night).

Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.1
SW
13
0.1
SW
13
0.3
SW
8
0.4
SW
8
0.2
SSW
8
0.2
SSW
7
0.1
SW
12
0.1
SW
12
0.4
SW
8
1.1
SSW
8
0.7
SW
7
1.3
SW
6
2.1
SW
6
1.3
SW
8
1.1
SW
9
0.9
SW
8
0.7
SW
8
0.9
SW
7
0.7
SW
7
1
SW
8
1.3
SW
6
Wave Graph
Metric surfscale
Energy kJ
7
7
11
17
6
6
6
6
24
157
53
136
341
233
190
120
61
67
54
113
96
Wind (km/h)
20
E
15
NE
35
ESE
15
E
10
NNE
15
NE
20
E
25
SSW
20
SSW
25
SW
15
SW
30
SSW
45
WNW
15
W
10
W
40
S
40
SW
50
W
40
W
30
W
25
SW
Wind State
cross-off
cross
off
cross-off
cross-on
cross
cross-off
cross-off
cross-off
cross
cross
cross-off
on
cross-on
cross-on
cross-off
cross
cross-on
cross-on
cross-on
cross
High Tide
7:55PM3.37m
8:14AM3.26m
8:28PM3.66m
8:46AM3.48m
8:59PM3.92m
9:16AM3.67m
9:29PM4.12m
9:47AM3.83m
10:01PM4.26m
10:18AM3.93m
10:34PM4.30m
10:52AM3.97m
11:09PM4.25m
Low Tide
2:17PM0.97m
2:46AM0.75m
2:53PM0.72m
3:20AM0.50m
3:26PM0.50m
3:53AM0.30m
3:59PM0.35m
4:26AM0.17m
4:32PM0.27m
4:59AM0.12m
5:04PM0.26m
5:32AM0.17m
5:38PM0.34m
cloud
cloud
light rain
rain showers
part cloud
rain showers
light rain
rain showers
clear
rain showers
clear
rain showers
rain showers
clear
rain showers
thunderstorm
thunderstorm
rain showers
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:16
6:16
6:18
6:20
6:22
6:24
6:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:23
8:22
8:20
8:17
8:15
8:13
8:10
 mm
1
1
1
1
2
1
6
1
1
10
1
3
Temp °C
18
21
21
18
20
22
17
18
17
17
17
17
16
17
18
17
16
15
16
18
17
Feels °C
16
16
13
16
19
21
15
15
14
14
16
14
12
15
16
11
9
7
9
13
12
  • 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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