Valley Left surfForecast / Mayo and Achill Island / Ireland

information circle12 Day Weather and Surf, issued 11 pm Monday 16 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
8.4° C
(Which is 1.1°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 Monday (Feb 23) at 9AM. The primary swell is predicted to be 2.1m and 10s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Valley Left in the next 12 days are 2.5m 12s and forecast to arrive on Monday (Feb 23) at 3PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 6.0m 16s period and expected on Sunday (Feb 22) at 3PM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Mon 23rd Feb)7ft (2.1m) 10s
Best Surf 9AM (Mon 23rd Feb)7ft (2.1m) 10s
Most Powerful 3PM (Mon 23rd Feb)8ft (2.5m) 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 Heavy rain (total 20mm), heaviest during Wed morning. Mild temperatures (max 9°C on Thu afternoon, min 3°C on Tue morning). Winds increasing (light winds from the E on Mon night, near gales from the ESE by Tue night).

Days 3-6 Weather Summary Heavy rain (total 27mm), heaviest during Fri morning. Very mild (max 11°C on Fri night, min 8°C on Thu night). Winds increasing (moderate winds from the SSW on Thu night, near gales from the WSW by Sun afternoon).

Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Mon
23
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
1
Swell
Height Map
Wave Height (m) & direction (?)
4
W
3
W
2.2
WSW
1.9
SSE
2.4
SW
0.2
NNW
4
WSW
5
W
4
W
3.5
W
3.5
WSW
3.5
WSW
5
WSW
5
WSW
5
WSW
0.4
NNW
0.6
NNW
0.6
NNW
0.3
NNW
2.1
NW
2.5
NW
Period(s) (?)14121291018131312111111181716121110101012
Wave
Graph
(?)Metric surfscale
Energy kJ (?)0000031000000000599183199161685
Wind
(km/h)
15
NNE
25
ESE
40
ESE
55
ESE
40
ESE
20
ESE
35
ESE
20
NW
25
W
45
S
45
SW
40
WSW
45
SW
45
SW
45
SW
40
WSW
40
SW
55
SW
35
WNW
5
SW
30
SSE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
on
crossoffcross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
on
cross-
off
off
High Tide
/ height (m)
5:38AM
3.35
5:58PM
2.93
6:09AM
3.50
6:31PM
3.02
6:41AM
3.57
7:05PM
3.07
7:14AM
3.56
7:39PM
3.07
7:50AM
3.46
8:16PM
3.02
8:29AM
3.27
8:57PM
2.90
9:13AM
3.01
Low Tide
/ height (m)
11:17PM
0.39
11:54AM
0.22
11:49PM
0.25
12:25PM
0.07
12:21AM
0.17
12:56PM
-0.02
12:54AM
0.15
1:29PM
-0.01
1:30AM
0.20
2:03PM
0.08
2:08AM
0.33
2:40PM
0.27
2:51AM
0.51
3:23PM
0.53
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Mon
23
Sunrise-7:56--7:54--7:52--7:50--7:47--7:45--7:43-
Sunset--5:51--5:52--5:54--5:57--5:59--6:00--6:02
part cloud
cloud
cloud
mod rain
mod rain
light rain
light rain
light rain
part cloud
light rain
rain showers
cloud
light rain
light rain
cloud
mod rain
light rain
part cloud
part cloud
part cloud
cloud
Rain (mm)
---66413-311-31-72----
Temp. °C74457858910101011111111109889
Feels °C (?)2-5-6-614-31341243232-3-141
  • 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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