Birsay Bay surfForecast / Scot – Orkney / UK

information circle12 Day Weather and Surf, issued 12 am Friday 11 Jul 2025 BST
Forecast update in hr  min  s Forecast update imminent
Birsay Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Birsay Bay sea temperature is
12.6° C
(Which is slightly warmer than usual)


Best Forecast Surf Conditions for Birsay Bay this week:

The surf forecast for Birsay Bay over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Jul 11) at 4AM. The primary swell is predicted to be 1.7m and 9s period with a secondary swell of 0.1m and 8s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Birsay Bay in the next 12 days are 1.7m 9s and forecast to arrive on Friday (Jul 11) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Monday (Jul 14) at 10PM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Fri 11th Jul)5.5ft (1.7m) 9s
Best Surf 4AM (Fri 11th Jul)5.5ft (1.7m) 9s
Most Powerful 4AM (Fri 11th Jul)5.5ft (1.7m) 9s

Table - best surf conditions forecast for Birsay Bay over the next 12 days.

Updates in  hr  min  s Forecast update imminent
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tue
22
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.8
W
1.6
W
1.5
W
1.4
W
1.1
W
1
W
0.8
WSW
0.6
WSW
0.6
WSW
0.4
WNW
0.5
W
0.5
W
0.8
W
0.9
W
0.6
W
0.5
W
0.6
WSW
0.5
WSW
0.4
WSW
0.6
W
1.4
WSW
1
W
0.4
WSW
0.6
WSW
0.7
NNE
0.6
NNE
0.5
N
0.4
WSW
0.5
W
0.5
W
0.6
WSW
0.6
W
0.5
W
0.5
N
0.8
NNE
0.8
NNE
Period(s) (?)99999998101098876999885588988999999998
Wave
Graph
(?)Metric surfscale
Energy (?)52941836732520917713581926242398794455174522652109904460110726152567183776578154142
Wind
(km/h)
15
SSW
15
SSE
10
SE
15
SE
15
SE
25
SE
20
ESE
15
E
15
E
20
SE
25
SE
30
ESE
25
E
15
NE
25
NNW
30
WNW
25
NNW
25
NW
20
NW
15
NNW
15
NNW
10
NNE
10
NE
10
E
15
ESE
25
SE
25
SE
30
ESE
15
ESE
15
ESE
5
W
5
SSW
5
WSW
25
W
25
WSW
30
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
offoffoffoffoffcross-
off
cross-
off
offoffcross-
off
cross-
off
crosscross-
on
cross-
on
ononononcross-
on
crosscross-
off
cross-
off
offoffoffoffoffcross-
off
glasscross-
off
cross-
on
cross-
on
cross-
on
cross-
on
High Tide
/ height (m)
9:54AM
2.72
10:07PM
3.01
10:31AM
2.74
10:41PM
3.07
11:09AM
2.72
11:17PM
3.10
11:48AM
2.68
11:54PM
3.08
12:30PM
2.63
12:34AM
3.02
1:16PM
2.56
1:20AM
2.91
2:08PM
2.49
2:15AM
2.77
3:08PM
2.44
3:21AM
2.64
4:16PM
2.43
4:38AM
2.57
5:28PM
2.50
5:57AM
2.59
6:36PM
2.63
7:10AM
2.68
Low Tide
/ height (m)
3:48AM
0.45
3:56PM
0.50
4:26AM
0.34
4:32PM
0.44
5:04AM
0.25
5:08PM
0.43
5:43AM
0.20
5:46PM
0.46
6:23AM
0.20
6:26PM
0.54
7:06AM
0.26
7:11PM
0.64
7:54AM
0.37
8:03PM
0.77
8:48AM
0.52
9:06PM
0.88
9:54AM
0.67
10:23PM
0.93
11:10AM
0.75
11:47PM
0.85
12:25PM
0.74
1:00AM
0.67
1:29PM
0.65
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tue
22
Sunrise-4:16--4:18--4:20--4:20--4:22--4:24--4:26--4:28--4:31--4:33--4:35--4:37-
Sunset--10:19--10:17--10:15--10:15--10:13--10:10--10:09--10:07--10:06--10:04--10:01--10:00
part cloudclearclearclearclearclearclearclearclearpart cloudcloudpart cloudrain showerslight rainclearcloudpart cloudclearclearclearclearclearclearpart cloudclearpart cloudpart cloudcloudpart cloudpart cloudclearpart cloudclearpart cloudcloudcloud
Rain (mm)
------------13----------------------
Temp. °C181819191817171714161514151413121212121213121212131414141314141414141313
Feels °C (?)1516181716131215121311101012978881011910109911911121414131198

Short Range Forecast: Mostly dry. Very mild (max 19°C on Fri afternoon, min 14°C on Sun afternoon). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 4mm), mostly falling on Tue morning. Very mild (max 16°C on Sun night, min 12°C on Tue night). Mainly fresh winds.

Days 6-9 Weather Summary Mostly dry. Very mild (max 14°C on Sat morning, min 11°C on Wed night). Mainly fresh winds.

Long Range Forecast: Mostly dry. Very mild (max 14°C on Sat night, min 12°C on Tue afternoon). Winds decreasing (fresh winds from the ESE on Sat night, calm by Mon morning).

  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Birsay Bay Surf forecast

The above surf forecast table for Birsay Bay provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Birsay Bay can be found by selecting the local surf guide option on the grey menu. Our Birsay Bay 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 (Birsay Bay) 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 Birsay Bay 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.

Are you planning a holiday in Orkney Islands? If you are looking for accommodation near Birsay Bay, camping, hotels and holiday cottages in Orkney Islands, consider staying in Kirkwall which is 26 km (16 miles) away. Other places in and around Orkney Islands where you can find information about places to rent, and car hire include Scrabster which is 58 km (36 miles) away and Wick, 79 km (49 miles) away.

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