Valley Left surfForecast / Mayo and Achill Island / Ireland

information circle12 Day Weather and Surf, issued 11 pm Tuesday 25 Nov 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
11.5° 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 2.4m 13s and forecast to arrive on Saturday (Nov 29) at 6AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 8.5m 16s period and expected on Thursday (Nov 27) at 9PM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 6AM (Sat 29th Nov)8ft (2.4m) 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 23mm), heaviest during Wed morning. Very mild (max 13°C on Wed night, min 8°C on Thu night). Winds increasing (light winds from the SSW on Wed morning, gales from the SW by Thu afternoon).

Days 3-6 Weather Summary Heavy rain (total 33mm), heaviest during Sun afternoon. Very mild (max 12°C on Sun night, min 5°C on Sun morning). Winds increasing (light winds from the E on Sat night, near gales from the S by Sun night).

Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
01
Tue
02
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
Wave Height (m) & direction (?)
0.7
WNW
0.2
WNW
0.3
WNW
3
WSW
4
SW
6
WSW
8.5
W
7
W
6
W
1.4
NW
2.3
NNW
2
NNW
1.7
NW
1
NW
0.6
NW
3.5
SW
2
WSW
1
NNW
2.5
W
3.5
WSW
5
WSW
Period(s) (?)81513991116141314131310989912121214
Wave
Graph
(?)Metric surfscale
Energy kJ (?)542135000000810184412405801595500260000
Wind
(km/h)
35
S
15
SSW
25
SSW
30
SSW
50
SSW
65
SW
65
SW
55
WSW
45
WSW
30
WNW
35
NW
25
NW
10
E
15
SE
45
SSW
25
SSW
10
NW
15
ESE
50
SW
40
W
35
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffcross-
off
offoffcross-
off
cross-
off
cross-
off
cross-
off
crosscross-
on
cross-
on
crosscross-
off
offcross-
off
cross-
on
cross-
off
cross-
off
cross-
off
cross-
off
High Tide
/ height (m)
8:59AM
2.79
9:27PM
2.20
9:50AM
2.70
10:33PM
2.14
10:50AM
2.66
11:49PM
2.17
11:55AM
2.68
1:01AM
2.33
1:01PM
2.77
2:03AM
2.56
2:02PM
2.91
2:55AM
2.83
3:00PM
3.07
Low Tide
/ height (m)
2:19AM
0.86
3:22PM
0.93
3:05AM
0.98
4:24PM
0.94
4:07AM
1.10
5:34PM
0.87
5:24AM
1.15
6:42PM
0.71
6:44AM
1.09
7:41PM
0.52
7:53AM
0.91
8:33PM
0.33
8:52AM
0.68
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
01
Tue
02
Sunrise-8:26--8:27--8:29--8:30--8:33--8:33--8:36-
Sunset--4:25--4:24--4:23--4:23--4:22--4:22--4:21
light rain
light rain
light rain
light rain
rain showers
part cloud
rain showers
thunderstorm
light rain
light rain
part cloud
rain showers
part cloud
cloud
mod rain
heavy rain
light rain
rain showers
rain showers
rain showers
rain showers
Rain (mm)
33152-4325-1--71433522
Temp. °C101212131310999998898121011999
Feels °C (?)49764-3-3-3-110141-2881-301
  • 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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