Valley Left surfForecast / Mayo and Achill Island / Ireland

information circle12 Day Weather and Surf, issued 5 pm Monday 23 Feb 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
8.2° C
(Which is 1.3°C colder than average for this time of year)

Best Forecast Surf Conditions for Valley Left this week:

The surf forecast for Valley Left over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Feb 25) at 9PM. The primary swell is predicted to be 1.8m and 11s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Valley Left in the next 12 days are 5.5m 13s and forecast to arrive on Monday (Mar 02) at 9AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 6.0m 12s period and expected on Monday (Mar 02) at 3AM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Wed 25th Feb)6ft (1.8m) 11s
Best Surf 9PM (Wed 25th Feb)6ft (1.8m) 11s
Most Powerful 9AM (Mon 2nd Mar)18ft (5.5m) 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 Moderate rain (total 17mm), heaviest on Thu morning. Very mild (max 11°C on Tue afternoon, min 9°C on Wed night). Winds increasing (light winds from the SSW on Wed morning, strong winds from the SSW by Thu morning).

Days 3-6 Weather Summary Heavy rain (total 42mm), heaviest during Sat night. Very mild (max 11°C on Sat afternoon, min 7°C on Fri night). Winds increasing (calm on Thu night, near gales from the SW by Sat afternoon).

Mon
23
Tuesday
24
Wednesday
25
Thursday
26
Friday
27
Saturday
28
Sunday
01
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
4.5
W
3.5
WSW
4
SW
4
WSW
3
SW
3.5
WSW
0.7
WNW
1.9
NW
1.3
NW
1.3
NW
1.4
NW
0.8
WNW
3
WNW
1.8
W
1.5
NW
1.3
NW
2.4
WNW
2.2
WNW
3.5
SSW
0.5
NW
5.5
WNW
Period(s) (?)141311121216111111111113111611101212101013
Wave
Graph
(?)Metric surfscale
Energy kJ (?)000000109866361364471204005153441722142604510745
Wind
(km/h)
25
SSW
35
S
45
S
35
S
20
SSE
15
SSW
15
S
25
SSW
50
SSW
30
WSW
10
SSW
15
SW
30
WNW
20
WSW
40
SW
30
WSW
35
SW
45
SSW
45
S
15
SW
30
N
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
offoffoffoffoffoffoffcross-
off
cross-
off
offcross-
off
crosscross-
off
cross-
off
cross-
off
cross-
off
offoffcross-
off
on
High Tide
/ height (m)
9:45PM
2.74
10:08AM
2.70
10:47PM
2.57
11:25AM
2.43
12:15AM
2.49
1:10PM
2.32
1:53AM
2.59
2:45PM
2.42
3:09AM
2.86
3:51PM
2.62
4:05AM
3.16
4:40PM
2.82
4:50AM
3.41
Low Tide
/ height (m)
3:23PM
0.53
3:44AM
0.74
4:18PM
0.81
4:57AM
0.97
5:36PM
1.05
6:46AM
1.06
7:21PM
1.09
8:31AM
0.89
8:46PM
0.93
9:40AM
0.60
9:45PM
0.70
10:30AM
0.32
10:30PM
0.46
11:12AM
0.10
Mon
23
Tuesday
24
Wednesday
25
Thursday
26
Friday
27
Saturday
28
Sunday
01
Sunrise--7:41--7:37--7:35--7:33--7:31--7:28--7:26
Sunset6:02--6:05--6:07--6:08--6:10--6:13--6:15--
light rain
cloud
light rain
light rain
light rain
light rain
part cloud
rain showers
light rain
cloud
light rain
rain showers
rain showers
light rain
light rain
mod rain
heavy rain
light rain
mod rain
heavy rain
rain showers
Rain (mm)
1-3141-34-1113571956231
Temp. °C1010101110101010111099981011111110109
Feels °C (?)5214577543532-12112110
  • 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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