Valley Left surfForecast / Mayo and Achill Island / Ireland

information circle12 Day Weather and Surf, issued 11 pm Sunday 08 Mar 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
8.5° C
(Which is 1.0°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 (Mar 09) at 9AM. The primary swell is predicted to be 2.5m and 14s 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 9.5m 17s and forecast to arrive on Sunday (Mar 15) at 9PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 12.0m 19s period and expected on Sunday (Mar 15) at 6AM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Mon 9th Mar)8ft (2.5m) 14s
Best Surf 9AM (Mon 9th Mar)8ft (2.5m) 14s
Most Powerful 9PM (Sun 15th Mar)31ft (9.5m) 17s

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 21mm), heaviest during Sun night. Very mild (max 10°C on Tue morning, min 7°C on Mon night). Winds increasing (light winds from the SW on Mon morning, near gales from the WSW by Tue night).

Days 3-6 Weather Summary Heavy rain (total 34mm), heaviest during Thu morning. Very mild (max 10°C on Wed night, min 3°C on Thu night). Winds decreasing (near gales from the W on Thu night, moderate winds from the WSW by Fri night).

Monday
09
Tuesday
10
Wednesday
11
Thursday
12
Friday
13
Saturday
14
Sun
15
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
2
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
2
WNW
2.5
WNW
2.2
WNW
4
WSW
3.5
W
3
W
7
W
6.5
W
6
W
6.5
W
6
W
5.5
W
7
W
8
W
7.5
W
6
WNW
4
WNW
3
WNW
0.7
NNW
12
W
11
W
Period(s) (?)121413121213141414131414161415141312131918
Wave
Graph
(?)Metric surfscale
Energy kJ (?)10722344160900000000000004709251718100
Wind
(km/h)
15
S
5
SW
30
SW
45
S
20
SSW
45
S
50
W
40
WSW
50
SW
50
WSW
35
WSW
40
WSW
60
W
40
W
55
W
35
WNW
35
SW
45
SW
70
WSW
65
W
65
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offcross-
off
cross-
off
offcross-
off
offcrosscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
crosscrosscrosscrosscross-
off
cross-
off
cross-
off
crosscross
High Tide
/ height (m)
8:50AM
2.70
9:08PM
2.65
9:27AM
2.43
9:51PM
2.44
10:16AM
2.17
10:57PM
2.26
11:45AM
1.99
12:48AM
2.21
1:49PM
2.01
2:24AM
2.37
3:03PM
2.18
3:19AM
2.63
3:48PM
2.41
Low Tide
/ height (m)
2:35AM
0.68
2:49PM
0.80
3:13AM
0.93
3:24PM
1.05
4:02AM
1.19
4:14PM
1.28
5:30AM
1.39
5:54PM
1.41
7:49AM
1.36
7:54PM
1.32
9:03AM
1.14
8:58PM
1.10
9:46AM
0.86
Monday
09
Tuesday
10
Wednesday
11
Thursday
12
Friday
13
Saturday
14
Sun
15
Sunrise-7:09--7:07--7:05--7:03--7:00--6:58--6:54-
Sunset--6:30--6:32--6:35--6:37--6:38--6:39--6:42
mod rain
clear
cloud
mod rain
cloud
rain showers
rain showers
part cloud
cloud
mod rain
mod rain
light rain
mod rain
light rain
rain showers
rain showers
light rain
rain showers
rain showers
rain showers
light rain
Rain (mm)
6--7-62--662733313122
Temp. °C9889101089910874678810545
Feels °C (?)561240-40-2-20-3-9-6-5-101-9-11-10
  • 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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