Valley Left surfForecast / Mayo and Achill Island / Ireland

information circle12 Day Weather and Surf, issued 11 pm Tuesday 02 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
11.1° 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 2.5m 14s and forecast to arrive on Friday (Dec 05) at 3PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 7.0m 17s period and expected on Thursday (Dec 04) at 9PM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 3PM (Fri 5th Dec)8ft (2.5m) 14s

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 49mm), heaviest during Wed afternoon. Very mild (max 12°C on Fri morning, min 6°C on Thu night). Winds increasing (moderate winds from the W on Tue night, near gales from the SE by Fri morning).

Days 3-6 Weather Summary Heavy rain (total 21mm), heaviest during Sun night. Very mild (max 12°C on Sat night, min 9°C on Sun night). Winds decreasing (near gales from the SW on Fri night, moderate winds from the SSW by Sun afternoon).

Wednesday
03
Thursday
04
Friday
05
Saturday
06
Sunday
07
Monday
08
Tue
09
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 (?)
5
W
4.5
W
3.5
W
4
W
5.5
W
6.5
W
6.5
W
4.5
W
2.5
WNW
0.9
WNW
7
WSW
6
WSW
4.5
WSW
4.5
WSW
3.5
WSW
3
WSW
5
WSW
5.5
WSW
5
WSW
5
WSW
5
SSW
Period(s) (?)141413121416161614131716141111121918161513
Wave
Graph
(?)Metric surfscale
Energy kJ (?)00000000294831200000000000
Wind
(km/h)
25
WNW
25
SW
35
S
40
W
35
W
30
WSW
25
SSW
55
SE
45
SW
40
SW
45
W
45
WSW
30
SSW
45
WSW
30
WSW
30
SSE
40
SW
30
SSW
20
SSE
55
SSE
35
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
off
offcrosscrosscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
crosscross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
offoffoffoff
High Tide
/ height (m)
3:43AM
3.09
3:55PM
3.20
4:30AM
3.32
4:48PM
3.28
5:15AM
3.48
5:39PM
3.27
6:02AM
3.58
6:30PM
3.17
6:49AM
3.59
7:21PM
3.00
7:38AM
3.52
8:13PM
2.78
8:29AM
3.38
Low Tide
/ height (m)
9:22PM
0.17
9:45AM
0.43
10:08PM
0.08
10:36AM
0.21
10:54PM
0.06
11:26AM
0.06
11:39PM
0.09
12:16PM
0.01
12:24AM
0.19
1:07PM
0.05
1:09AM
0.32
2:00PM
0.18
1:56AM
0.49
2:57PM
0.35
Wednesday
03
Thursday
04
Friday
05
Saturday
06
Sunday
07
Monday
08
Tue
09
Sunrise-8:37--8:38--8:40--8:41--8:42--8:44--8:45-
Sunset--4:20--4:20--4:19--4:19--4:17--4:17--4:16
thunderstorm
light rain
mod rain
mod rain
rain showers
rain showers
rain showers
mod rain
light rain
mod rain
rain showers
rain showers
cloud
part cloud
clear
rain showers
rain showers
light rain
mod rain
heavy rain
heavy rain
Rain (mm)
8210922394722---72161614
Temp. °C1010988991211111111121110111111111312
Feels °C (?)441011262322614334536
  • 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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