Valley Left surfForecast / Mayo and Achill Island / Ireland

information circle12 Day Weather and Surf, issued 5 am Monday 29 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
10.0° 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 3.0m 12s and forecast to arrive on Friday (Jan 02) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.0m 11s period and expected on Saturday (Jan 03) at 3AM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 3AM (Fri 2nd Jan)10ft (3.0m) 12s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Mild temperatures (max 8°C on Wed night, min 3°C on Mon morning). Wind will be generally light.

Days 3-6 Weather Summary Moderate rain (total 13mm), heaviest on Fri afternoon. Mild temperatures (max 8°C on Thu morning, min 3°C on Fri afternoon). Winds increasing (light winds from the NW on Thu night, strong winds from the N by Sat night).

Monday
29
Tuesday
30
Wednesday
31
Thursday
01
Friday
02
Saturday
03
Sunday
04
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
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 (?)
0.4
NW
0.3
NW
0.3
E
0.6
W
0.8
W
0.9
WSW
0.9
N
0.8
N
0.5
NW
1.8
NNW
2.4
NNW
0.2
N
2.5
NNW
0.2
WNW
2.5
NNW
0.5
NE
3
NNW
3.5
N
3.5
N
3
N
2.3
N
Period(s) (?)87216141312113111131261131211111110
Wave
Graph
(?)Metric surfscale
Energy kJ (?)2091000004001176530500000
Wind
(km/h)
10
E
10
ENE
10
E
10
E
15
ESE
10
ESE
5
SE
10
SW
25
WNW
25
NNW
25
N
15
N
35
NW
25
NNE
30
NNE
30
NE
15
NE
30
NNE
40
NNE
35
N
20
N
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscrosscrosscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
crossonononcross-
on
cross-
on
cross-
on
cross-
on
cross-
on
onononon
High Tide
/ height (m)
12:14PM
2.73
1:17AM
2.53
1:28PM
2.74
2:24AM
2.72
2:40PM
2.82
3:23AM
2.96
3:46PM
2.94
4:17AM
3.21
4:44PM
3.04
5:08AM
3.43
5:36PM
3.09
5:55AM
3.59
6:25PM
3.07
Low Tide
/ height (m)
6:50PM
0.63
7:14AM
0.98
7:57PM
0.57
8:29AM
0.80
8:59PM
0.48
9:34AM
0.57
9:54PM
0.38
10:31AM
0.33
10:44PM
0.28
11:24AM
0.14
11:31PM
0.22
12:14PM
0.03
12:15AM
0.20
Monday
29
Tuesday
30
Wednesday
31
Thursday
01
Friday
02
Saturday
03
Sunday
04
Sunrise8:59--8:59--8:57--8:57--8:57--8:57--8:57--
Sunset-4:23--4:24--4:25--4:27--4:28--4:30--4:30-
part cloud
part cloud
cloud
cloud
part cloud
clear
clear
part cloud
cloud
part cloud
part cloud
part cloud
rain showers
light rain
rain showers
rain showers
rain showers
light rain
rain showers
part cloud
cloud
Rain (mm)
------------1241141--
Temp. °C444554348877734444556
Feels °C (?)00-1200012101-1-4-3-4-2-6-4-42
  • 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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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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