Harlech surfForecast / Wales – Mid / UK

information circle12 Day Weather and Surf, issued 6 am Tuesday 08 Jul 2025 BST
Forecast update in hr  min  s Forecast update imminent
Harlech surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Harlech sea temperature is
17.3° C
(Which is 2.7°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Harlech this week:

The most powerful waves expected at Harlech in the next 12 days are 0.9m 9s and forecast to arrive on Tuesday (Jul 15) at 1PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Monday (Jul 14) at 10AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 1PM (Tue 15th Jul)3ft (0.9m) 9s

Table - best surf conditions forecast for Harlech over the next 12 days.

Updates in  hr  min  s Forecast update imminent
Tuesday
08
Wednesday
09
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.4
NW
0.3
WSW
0.2
WSW
0.1
W
0.1
SW
0.1
SW
0.1
W
0.1
W
0.1
W
0.4
SW
0.5
SW
0.8
SW
0.9
SW
0.7
WSW
0.4
WSW
0.4
SW
0.4
SW
0.4
WSW
0.4
SW
0.2
WSW
0.2
WSW
0.2
WSW
0.1
W
0.2
WSW
0.2
WSW
0.3
WSW
Period(s) (?)455765----------11111034891098776665101099
Wave
Graph
(?)Metric surfscale
Energy (?)106221100000000002336108212890301714251367539916
Wind
(km/h)
10
NW
10
W
5
S
5
SW
5
WSW
5
SSE
5
SW
5
WSW
5
E
5
SW
5
W
5
ENE
0
SSE
5
NW
15
E
10
E
5
SSW
15
E
10
E
5
S
10
SSW
20
SSW
15
SW
5
W
5
W
10
SW
10
S
10
WNW
10
WNW
5
NNW
5
WNW
10
WNW
5
ENE
5
WNW
10
WNW
10
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
oncrossglassglassglassglassglassoffglassglassoffglassglassoffoffglassoffoffglasscross-
on
cross-
on
cross-
on
glassoncross-
on
crosscross-
on
onglassglasscross-
on
cross-
off
glasscross-
on
off
High Tide
/ height (m)
7:37PM
3.54
7:56AM
3.52
8:16PM
3.75
8:34AM
3.68
8:53PM
3.96
9:11AM
3.81
9:30PM
4.15
9:49AM
3.91
10:08PM
4.30
10:27AM
3.96
10:47PM
4.39
11:07AM
3.96
11:27PM
4.40
11:50AM
3.89
12:10AM
4.32
12:35PM
3.78
12:57AM
4.16
1:26PM
3.63
1:50AM
3.93
2:24PM
3.47
2:52AM
3.70
3:32PM
3.37
Low Tide
/ height (m)
2:11PM
1.14
2:41AM
1.04
2:57PM
0.98
3:26AM
0.85
3:39PM
0.82
4:08AM
0.69
4:19PM
0.69
4:49AM
0.56
4:57PM
0.62
5:29AM
0.48
5:34PM
0.60
6:08AM
0.45
6:12PM
0.64
6:49AM
0.48
6:49PM
0.73
7:30AM
0.56
7:30PM
0.85
8:14AM
0.69
8:15PM
0.99
9:03AM
0.85
9:12PM
1.13
10:03AM
1.01
10:26PM
1.22
Tuesday
08
Wednesday
09
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunrise5:01--5:01--5:03--5:03--5:05--5:05--5:07--5:09--5:09--5:11--5:13--5:13--
Sunset-9:39--9:39--9:38--9:37--9:37--9:36--9:35--9:34--9:32--9:31--9:30--9:30-
clearpart cloudpart cloudpart cloudpart cloudclearclearclearclearclearclearclearclearrain showersclearclearclearclearclearpart cloudlight raincloudcloudpart cloudpart cloudpart cloudpart cloudclearclearclearclearpart cloudclearclearclearclear
Rain (mm)
-------------1------2---------------
Temp. °C151515181917202018232422252622252624252718151616171716171817202018212220
Feels °C (?)121315182018202018232422262722242622232718131516171716161717212018212221

Short Range Forecast: Mostly dry. Warm (max 20°C on Thu morning, min 14°C on Tue morning). Wind will be generally light.

Days 3-6 Weather Summary Some drizzle, heaviest during Sat afternoon. Warm (max 26°C on Sat afternoon, min 18°C on Sun night). Wind will be generally light.

Days 6-9 Weather Summary Light rain (total 2mm), mostly falling on Mon night. Warm (max 27°C on Mon afternoon, min 15°C on Tue morning). Wind will be generally light.

Long Range Forecast: Mostly dry. Warm (max 22°C on Sat afternoon, min 15°C on Thu night). Wind will be generally light.

  • 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 Harlech Surf forecast

The above surf forecast table for Harlech provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Harlech can be found by selecting the local surf guide option on the grey menu. Our Harlech 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 (Harlech) 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 Harlech 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.

Harlech is 9 km (6 miles) from Porthmadog. If you plan a holiday in Mid Wales, look for hotels and other accommodation in Porthmadog. Porthmadog has rooms for a wide range of budgets as well as car hire and transport links.

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