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Surf Forecasts:

Valley Left surfForecast / Mayo and Achill Island / Ireland

information circle12 Day Weather and Surf, issued 11 pm Tuesday 20 Jan 2026 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
9.3° C
 (Which is slightly cooler than normal)

Best Forecast Surf Conditions for Valley Left this week:

The most powerful waves expected at Valley Left in the next 12 days are 1.4m 12s and forecast to arrive on Wednesday (Jan 21) at 9AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 6.5m 19s period and expected on Tuesday (Jan 27) at 12PM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 9AM (Wed 21st Jan)4.5ft (1.4m) 12s

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

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

Short Range Forecast Moderate rain (total 18mm), heaviest on Wed afternoon. Mild temperatures (max 8°C on Thu morning, min 5°C on Tue night). Winds increasing (calm on Wed night, strong winds from the ENE by Fri morning).

Days 3-6 Weather Summary Moderate rain (total 18mm), heaviest on Mon afternoon. Mild temperatures (max 7°C on Sat afternoon, min 4°C on Fri night). Winds increasing (light winds from the E on Fri night, near gales from the SE by Mon morning).

Wednesday
21
Thursday
22
Friday
23
Saturday
24
Sunday
25
Monday
26
Tue
27
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
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
See all maps
Wave Height (m) & direction (?)
3
W
1.4
WNW
1.2
WNW
1.3
W
4.5
W
4
W
2.5
W
0.9
NW
1.2
ENE
1.3
ENE
1.6
NE
1.6
ENE
2.3
ENE
2.1
W
2.5
WSW
2.2
WSW
3
WSW
2.2
W
3
WSW
5
W
6.5
W
Period(s) (?)1312121914141310545561312151413121919
Wave
Graph
(?)Metric surfscale
Energy kJ (?)05853870000139686212411135200000000
Wind
(km/h)
20
SSE
20
E
30
ENE
10
SSW
5
NNW
5
WSW
10
ESE
50
ENE
30
E
15
ESE
20
ESE
20
ESE
30
ESE
30
ESE
30
ESE
35
SE
55
SE
15
E
35
WSW
35
WSW
40
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		crosscross-
on		offglassglasscross-
off		crosscrosscross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		crosscross-
off		cross-
off		cross-
off
High Tide
/ height (m)
7:07AM
3.41
7:27PM
2.81
7:40AM
3.40
8:03PM
2.78
8:15AM
3.33
8:42PM
2.72
8:52AM
3.20
9:26PM
2.65
9:36AM
3.02
10:17PM
2.56
10:30AM
2.81
11:20PM
2.49
11:40AM
2.61
Low Tide
/ height (m)
12:41AM
0.32
1:23PM
0.26
1:14AM
0.33
1:57PM
0.25
1:49AM
0.39
2:33PM
0.28
2:27AM
0.51
3:12PM
0.37
3:10AM
0.66
3:57PM
0.51
4:04AM
0.84
4:54PM
0.69
5:14AM
1.00
Wednesday
21
Thursday
22
Friday
23
Saturday
24
Sunday
25
Monday
26
Tue
27
Sunrise-8:44--8:41--8:41--8:40--8:37--8:37--8:34-
Sunset--4:58--5:00--5:01--5:02--5:05--5:07--5:08
light rain
cloud
mod rain
mod rain
rain showers
rain showers
part cloud
part cloud
cloud
part cloud
cloud
cloud
cloud
part cloud
clear
part cloud
mod rain
heavy rain
light rain
thunderstorm
thunderstorm
Rain (mm)
2-6613----------711532
Temp. °C766788776657666567787
Feels °C (?)1124765-2-12010-2-2-5-63-2-1-2
  • 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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FREE! Surf-Forecast.com widget for your website

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.

View detailed surf forecast for Valley Left at:
surf-forecast.com

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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