Fishermans (Rhiw) Surf Break

Lat Long: 52.82° N 4.61° W

Fishermans (Rhiw) Surf Forecast and Surf Report

Issued: 12 am 13 Aug 2026 (local time)

Forecast update in  hr  min

Today's Fishermans (Rhiw) sea temperature is
17.9° C
2.0° 

Fishermans (Rhiw) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Fishermans (Rhiw) surf forecast from 13 Aug 2026:

  • Most powerful swell: Wednesday 19 Aug, 10AM (local time) - 7ft (2.2m), 7s period, WSW swell with 467 kJ wave energy.

Best Forecast Surf Conditions for Fishermans (Rhiw) this week:

The most powerful waves expected at Fishermans (Rhiw) in the next 16 days are 2.2m 7s and forecast to arrive on Wednesday (Aug 19) at 10AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 7s period and expected on Thursday (Aug 20) at 7AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful10AM (Wed 19th Aug)7ft (2.2m) 7s

Table - best surf conditions forecast for Fishermans (Rhiw) over the next 16 days.


The Lowdown

Alright, listen up. Rusty here. I’ve had a good look at the charts for the stretch ahead, and I’ll be straight with you: it’s going to be a proper test of patience. We’re looking at a long, dry spell with barely a ripple to get excited about, especially through the heart of the period. The only real window of something surfable arrives mid-week next week, but it comes with a serious caveat.

Alright, let’s start with the near term. From now through the rest of this week and into the weekend, it’s flat. We’re talking ankle-snappers at best. The first few days show swell heights down around 0.3 ft to 1 ft, and the combined swell energy is struggling to get into double figures. It’s clean enough with the cross-offshore winds, but there’s simply no push. You’d be better off with a longboard and a whole lot of hope, or just staying in bed.

Things get interesting around Monday the 19th of August. We see a jump in the charts, but it’s not pretty. By Wednesday morning the 19th, the swell at Fishermans (Rhiw) bumps up to 7 ft from the WSW, with a solid 467 combined energy (moderate to strong). The wind is howling out of the NW at 25 mph, but it’s cross-offshore, which means the faces will be clean. This is big, powerful, and raw. That’s a wave for the crew with the skills and the paddle fitness. The swell period is short at 7 seconds, so it’ll be a bit lumpy and steep on the take-off. Not a beginner’s wave.

The afternoon of the 19th, the swell eases a touch to 6 ft, the wind drops to a more manageable 12 mph, and the energy is still solid at 280. It’s still clean, but the notes say it’s marginal due to questionable tide conditions. You’ll need to pick your time.

After that puff of energy, the plug gets pulled again. From Thursday the 20th right through to the end of the forecast window on the 28th, it’s back to tiny, gutless surf. The swell drops to 0.3 ft to 0.7 ft, and the combined energy is mostly in the single digits. There are glimmers of glassy conditions, like on the morning of the 23rd, but with no swell to speak of, it’s a flat, clean lake. The winds get nasty again from the 24th onward, with strong onshore winds and rain.

So, the standout window is the 19th of August. Wednesday morning offers the biggest, most powerful, and cleanest swell of the whole outlook. It’s a short-lived pulse, but it’s the only real show in town. The water temperature is about average for the time of year, so you won’t need a winter suit, but you will need your wits about you.

This is a long, quiet period, lads. The 19th is your only shot, and it’s not for the faint-hearted.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Fri morning. Warm (max 27°C on Wed night, min 14°C on Fri night). Winds increasing (calm on Thu night, fresh winds from the NNW by Sat morning).

Days 4-6 Weather Summary

Light rain (total 7mm), mostly falling on Mon afternoon. Very mild (max 19°C on Tue morning, min 13°C on Sat night). Winds increasing (calm on Sun night, strong winds from the SW by Tue afternoon).

Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
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
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
SW
8
0.4
SW
8
0.6
WSW
4
0.5
SW
4
0.3
SW
4
0.3
SW
7
0.2
WSW
7
0.2
WSW
7
0.1
SW
7
0.1
SW
7
0.1
SW
7
0.1
W
7
0.6
SSW
3
1.5
SW
6
0.9
WSW
6
0.6
SW
6
0.5
SW
6
1.8
SW
6
2.2
WSW
7
1.9
WSW
6
2.1
NW
7
Wave Graph
Metric surfscale
Energy kJ
17
14
13
9
3
8
5
5
2
2
2
1
8
138
69
31
16
237
467
280
371
Wind (km/h)
10
S
15
SW
15
S
5
NNE
20
N
20
N
30
N
25
NNW
20
N
20
N
15
NNW
5
N
25
SSW
30
SW
15
WSW
20
SW
35
SSW
35
NW
40
NW
20
NW
25
NNW
Wind State
on
cross-on
cross-on
glassy
cross-off
off
cross-off
cross-off
off
cross-off
cross-off
glassy
on
cross-on
cross-on
cross-on
on
cross-off
cross-off
cross-off
cross-off
High Tide
9:19AM3.95m
9:37PM4.49m
10:02AM4.03m
10:19PM4.55m
10:42AM4.01m
11:00PM4.46m
11:22AM3.91m
11:40PM4.24m
12:01PM3.72m
00:20AM3.91m
12:40PM3.48m
1:01AM3.53m
1:22PM3.21m
1:46AM3.14m
Low Tide
4:04AM-0.10m
4:15PM0.11m
4:46AM-0.19m
4:54PM0.07m
5:26AM-0.15m
5:32PM0.14m
6:03AM0.03m
6:09PM0.29m
6:39AM0.30m
6:44PM0.52m
7:13AM0.62m
7:20PM0.79m
7:48AM0.95m
7:59PM1.07m
clear
part cloud
part cloud
light rain
cloud
part cloud
part cloud
clear
part cloud
clear
part cloud
part cloud
light rain
light rain
light rain
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:54
5:56
5:58
6:00
6:01
6:03
6:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:50
8:47
8:45
8:43
8:40
8:38
8:37
 mm
1
1
5
1
Temp °C
21
21
19
18
18
16
14
15
15
14
16
16
17
17
18
19
18
18
16
17
16
Feels °C
21
21
19
20
14
12
9
11
11
10
13
13
14
14
18
18
11
12
10
14
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 Fishermans (Rhiw) Surf forecast

The above surf forecast table for Fishermans (Rhiw) provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Fishermans (Rhiw) can be found by selecting the local surf guide option on the grey menu. Our Fishermans (Rhiw) 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 (Fishermans (Rhiw)) 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 Fishermans (Rhiw) 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 Fishermans (Rhiw), camping, hotels and holiday cottages in Lleyn Peninsula, consider staying in Porthmadog which is 34 km (21 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, Aberystwyth and Bangor.

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