Birsay Bay surfForecast / Scot – Orkney / UK

information circle12 Day Weather and Surf, issued 11 pm Thursday 15 Jan 2026 GMT
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
8.8° 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 (Jan 16) at 6AM. The primary swell is predicted to be 3.5m and 16s period with a secondary swell of 0.4m and 9s. 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 3.5m 16s and forecast to arrive on Friday (Jan 16) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Monday (Jan 19) at 6AM.

Wave TypeTime (GMT) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Fri 16th Jan)11ft (3.5m) 16s
Best Surf 6AM (Fri 16th Jan)11ft (3.5m) 16s
Most Powerful 6AM (Fri 16th Jan)11ft (3.5m) 16s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Some drizzle, heaviest during Sat afternoon. Mild temperatures (max 8°C on Sat afternoon, min 7°C on Thu night). Winds increasing (light winds from the SSE on Thu night, fresh winds from the SSE by Sun afternoon).

Days 3-6 Weather Summary Mostly dry. Mild temperatures (max 8°C on Sun night, min 6°C on Wed morning). Mainly strong winds.

Friday
16
Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thu
22
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
!
!
4
4
3
2
0
1
0
0
0
2
!
!
!
1
2
2
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
3.5
W
3
W
2.5
W
2.4
W
1.9
W
1.5
W
1.2
W
1
W
0.9
W
0.7
W
0.4
WNW
1.9
WNW
3
WNW
3
WNW
3
WNW
2.5
WNW
2
W
1.8
W
1.5
W
1.3
W
2.1
W
Period(s) (?)171615141312121111102018161616141313121111
Wave
Graph
(?)Metric surfscale
Energy kJ (?)757450913106231412336893932371789615422403963508139242478141910876494231048
Wind
(km/h)
20
SSW
10
SSE
20
SSE
25
SSE
30
SSE
25
SE
25
SSE
25
SSE
30
SSE
40
SSE
45
SSE
45
SSE
45
SE
45
SE
45
SSE
40
SSE
35
SSE
45
SE
50
SE
50
SSE
50
SSE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
cross-
off
offoffoffcross-
off
cross-
off
cross-
off
offoffoffoffoffoffcross-
off
offoffoffoffcross-
off
High Tide
/ height (m)
7:11AM
2.63
7:34PM
2.58
7:50AM
2.79
8:12PM
2.68
8:25AM
2.93
8:47PM
2.74
8:58AM
3.05
9:21PM
2.77
9:29AM
3.13
9:54PM
2.77
10:00AM
3.16
10:27PM
2.75
10:32AM
3.14
Low Tide
/ height (m)
12:59AM
0.87
1:26PM
0.76
1:38AM
0.73
2:04PM
0.59
2:12AM
0.59
2:40PM
0.43
2:46AM
0.48
3:15PM
0.30
3:18AM
0.40
3:49PM
0.21
3:51AM
0.37
4:23PM
0.16
4:25AM
0.38
4:59PM
0.16
Friday
16
Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thu
22
Sunrise-8:52--8:52--8:49--8:48--8:47--8:45--8:42-
Sunset--3:52--3:53--3:56--3:59--4:00--4:02--4:06
clear
clear
part cloud
part cloud
cloud
light rain
part cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
Rain (mm)
-----1---------------
Temp. °C777778877877777776555
Feels °C (?)0421022100-2-2-3-3-3-3-1-4-6-6-7
  • 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 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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