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Surf Forecasts:

Union Bay surfForecast / Lake Superior / USA

information circle48hr Weather and Surf, issued 7 pm Sunday 14 Sep 2025 EDT
Forecast update in hr  min  s Forecast update imminent
Union Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Union Bay sea temperature is
15.9° C
 (Which is 2.0°C warmer than normal for this time of year)

How big are the waves at Union Bay today?

The current surf forecast for Union Bay at 9PM is: 0.9m 5s primary swell from a East-northeast direction (forecast issued at 07:00pm September 14). The wind direction is predicted to be cross-offshore.

Time (EDT) & DateWave HeightWave Period
Morning (14 Sep)--
Afternoon (14 Sep)2ft (0.6m)4s
Evening (14 Sep)3ft (0.9m)5s

Table - waves today at Union Bay. (Swell directed towards the surf break)

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.8
ENE
0.9
ENE
0.8
ENE
0.7
E
0.6
E
0.4
ESE
0.2
ENE
0.3
SE
0.4
ENE
0.5
E
0.5
E
0.3
E
0.2
E
0.4
SSE
0.3
S
0.3
S
————————
Period(s) (?)4555444334444443--------
Wave
Graph
(?)Metric surfscale
Energy kJ (?)2033312100103703100000000000
Wind
(km/h)
15
ENE
15
E
15
SE
15
SSE
15
SSE
10
SSE
10
SSE
10
SE
10
ESE
10
SSE
15
S
15
S
15
S
15
S
15
S
10
SW
10
S
15
SSW
15
SSW
15
SW
10
SSW
10
WSW
5
W
10
NW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
off		cross-
off		offcross-
off		offcross-
off		cross-
off		cross-
off		cross-
off		offoffoffoffoffcross-
off		offcross-
off		offcross-
off		offcross-
off		crosscross-
on
High Tide
/ height (m)
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
Low Tide
/ height (m)
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Sunrise-----7:35-------7:35-------7:37--
Sunset-8:13-------8:10-------8:08------
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
part cloud
clear
part cloud
part cloud
clear
clear
clear
rain showers
part cloud
part cloud
Rain (mm)
---------------------1--
Temp. °C232320201918222727252221202023272925222220181920
Feels °C (?)222319191817212727262121202023283026222221192121
  • 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

Eyeball surf reportRecent Eyeball Surf Reports for Lake Superior

  1. weather stationWind Update The wind is still cross-off at Union Bay (light winds from the SE at BUOY-OTNM4 23 km from Union Bay). not gfswave

    1 hour 43 minutes ago Union Bay
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23 km away, 1 h 43 min ago

15 km/h
SE
26.1
15.9
Air / Water (°C)
Please reload the page to see if there are any updates.

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Union Bay surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

View detailed surf forecast for Union Bay at:
surf-forecast.com

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