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Valley Left surfForecast / Mayo and Achill Island / Ireland

information circle12 Day Weather and Surf, issued 5 pm Monday 08 Dec 2025 IST
Forecast update in hr  min  s Forecast update imminent
Valley Left surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Valley Left sea temperature is
10.8° C
(Which is normal for this time of year)


Best Forecast Surf Conditions for Valley Left this week:

The most powerful waves expected at Valley Left in the next 12 days are 4.0m 13s and forecast to arrive on Tuesday (Dec 16) at 12AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 8.0m 15s period and expected on Sunday (Dec 14) at 6PM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful12AM (Tue 16th Dec)13ft (4.0m) 13s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Heavy rain (total 27mm), heaviest during Mon night. Very mild (max 15°C on Mon night, min 10°C on Mon night). Mainly near gales.

Days 3-6 Weather Summary Heavy rain (total 46mm), heaviest during Sun morning. Very mild (max 13°C on Sun morning, min 7°C on Thu afternoon). Mainly near gales.

Mon
08
Tuesday
09
Wednesday
10
Thursday
11
Friday
12
Saturday
13
Sunday
14
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
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
Wave Height (m) & direction (?)
5.5
WSW
4.5
WSW
3
W
4.5
WSW
4.5
WSW
5
WSW
5.5
WSW
0.2
NNW
0.3
NNW
0.5
NNW
4
W
4.5
W
6.5
WSW
6
W
5
W
3.5
W
4.5
WSW
5
WSW
6.5
WSW
6.5
W
1.6
NW
Period(s) (?)171615141211121314131617181614131212131410
Wave
Graph
(?)Metric surfscale
Energy kJ (?)00000001837960000000000507
Wind
(km/h)
30
SSW
25
ESE
55
S
55
WSW
50
SW
50
WSW
45
SW
50
S
50
S
30
S
30
S
45
S
45
SSW
35
SW
35
SSW
50
S
15
SW
50
S
40
WSW
25
SSW
30
SSE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
offoffoffoffoffcross-
off
cross-
off
cross-
off
offcross-
off
offcross-
off
offcross-
off
High Tide
/ height (m)
8:13PM
2.78
8:29AM
3.38
9:07PM
2.55
9:22AM
3.20
10:07PM
2.36
10:19AM
2.98
11:12PM
2.25
11:20AM
2.79
12:22AM
2.24
12:25PM
2.64
1:28AM
2.32
1:29PM
2.55
2:24AM
2.46
Low Tide
/ height (m)
1:56AM
0.49
2:57PM
0.35
2:45AM
0.69
3:57PM
0.53
3:41AM
0.88
5:02PM
0.67
4:47AM
1.05
6:08PM
0.76
6:03AM
1.15
7:09PM
0.79
7:19AM
1.14
8:02PM
0.79
8:22AM
1.07
Mon
08
Tuesday
09
Wednesday
10
Thursday
11
Friday
12
Saturday
13
Sunday
14
Sunrise--8:45--8:45--8:48--8:48--8:49--8:51--8:52
Sunset4:17--4:16--4:16--4:16--4:16--4:16--4:16--
thunderstorm
heavy rain
light rain
rain showers
rain showers
light rain
part cloud
part cloud
light rain
light rain
rain showers
rain showers
rain showers
rain showers
part cloud
mod rain
rain showers
heavy rain
rain showers
rain showers
cloud
Rain (mm)
3161131--244444-761322-
Temp. °C11151510101011111110999101011121310109
Feels °C (?)565-10-111042-2022194253
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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Quick surf report for Valley Left:

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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Valley Left surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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Information about the Valley Left Surf forecast

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

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