Birsay Bay surfForecast / Scot – Orkney / UK

information circle12 Day Weather and Surf, issued 5 pm Saturday 10 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
8.9° 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 Tuesday (Jan 13) at 9AM. The primary swell is predicted to be 3.0m and 11s period. 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 17s and forecast to arrive on Friday (Jan 16) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 7s period and expected on Sunday (Jan 11) at 9AM.

Wave TypeTime (GMT) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Tue 13th Jan)10ft (3.0m) 11s
Best Surf 9AM (Tue 13th Jan)10ft (3.0m) 11s
Most Powerful12AM (Fri 16th Jan)11ft (3.5m) 17s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Heavy rain (total 27mm), heaviest during Sat night. Mild temperatures (max 9°C on Sun night, min 5°C on Sat afternoon). Winds decreasing (gales from the SSE on Sat night, light winds from the SSW by Tue morning).

Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Tue night. Mild temperatures (max 8°C on Fri morning, min 5°C on Tue afternoon). Winds decreasing (strong winds from the SSE on Wed afternoon, light winds from the SSW by Thu afternoon).

Sat
10
Sunday
11
Monday
12
Tuesday
13
Wednesday
14
Thursday
15
Friday
16
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
0
0
0
0
0
0
!
3
0
0
1
0
0
3
!
!
3
1
1
Swell
Height Map
Wave Height (m) & direction (?)
1.7
W
1.8
W
0.9
W
1.1
WSW
1.3
W
3
WSW
4
WSW
4.5
W
3
WNW
1.8
NW
1.5
NNW
1.4
NNW
1.4
NNW
1.2
NNW
0.9
NNW
2
WNW
3.5
W
3
W
2.5
W
2.2
W
1.7
W
Period(s) (?)121110101311111211101312111110191716151413
Wave
Graph
(?)Metric surfscale
Energy kJ (?)816736154250564180742056203198569468956947730217628497335486932771891987
Wind
(km/h)
50
S
45
S
70
SSE
60
SSE
70
SSE
65
SSW
55
SSW
50
W
20
SSW
20
S
40
W
40
W
30
S
30
S
25
SW
25
SW
25
SSE
40
SE
40
ESE
50
ESE
45
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
cross-
off
cross-
on
cross-
off
cross-
off
cross-
on
cross-
on
cross-
off
cross-
off
crosscrosscross-
off
offoffoffoff
High Tide
/ height (m)
2:18AM
2.27
2:27PM
2.41
3:20AM
2.22
3:37PM
2.29
4:28AM
2.24
4:50PM
2.27
5:31AM
2.33
5:56PM
2.34
6:25AM
2.47
6:50PM
2.46
7:11AM
2.63
7:34PM
2.58
7:50AM
2.79
Low Tide
/ height (m)
7:51PM
0.77
8:02AM
1.09
8:51PM
0.96
9:17AM
1.20
10:04PM
1.07
10:43AM
1.19
11:17PM
1.08
11:53AM
1.09
12:14AM
1.00
12:44PM
0.93
12:59AM
0.87
1:26PM
0.76
1:38AM
0.73
Sat
10
Sunday
11
Monday
12
Tuesday
13
Wednesday
14
Thursday
15
Friday
16
Sunrise--9:00--8:57--8:56--8:56--8:55--8:52--8:52
Sunset3:40--3:41--3:44--3:45--3:48--3:49--3:52--
light rain
mod rain
light rain
light rain
rain showers
rain showers
light rain
rain showers
cloud
cloud
rain showers
part cloud
part cloud
light rain
part cloud
clear
part cloud
cloud
cloud
light rain
rain showers
Rain (mm)
16536222--1--1-----31
Temp. °C665898887767777778887
Feels °C (?)-5-4-10-5-2-6-4-321-4-2-4-3112-1-1-3-3
  • 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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