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Surf Forecasts

Union Bay surfForecast / Lake Superior / USA

information circle12 Day Weather and Surf, issued 1 pm Sunday 30 Mar 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
1.1° C
 (Which is slightly cooler than normal)

Best Forecast Surf Conditions for Union Bay this week:

The surf forecast for Union Bay over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Apr 02) at 2PM. The primary swell is predicted to be 3.5m and 8s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Union Bay in the next 12 days are 4.0m 10s and forecast to arrive on Wednesday (Apr 02) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Wednesday (Apr 02) at 2AM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+) 2PM (Wed 2nd Apr)11ft (3.5m) 8s
Best Surf 8PM (Wed 2nd Apr)13ft (4.0m) 10s
Most Powerful 8PM (Wed 2nd Apr)13ft (4.0m) 10s

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

Hourly12 Days
Lake Superior Surf
Print Surf Table
Updates in  hr  min  s Forecast update imminent 
Sun
30
Monday
31
Tuesday
01
Wednesday
02
Thursday
03
Friday
04
Saturday
05
Sunday
06
Monday
07
Tuesday
08
Wednesday
09
Thursday
10
Fri
11
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
2
4
0
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 (?)
3
NE
2.1
NE
1.2
N
0.4
NNW
0.4
NNE
0.1
NE
0.7
ESE
1.6
ESE
3
E
4
E
2.5
E
0.9
ENE
0.8
WNW
0.4
W
0.3
WSW
0.4
SW
0.3
W
0.4
WNW
——————————————————
Period(s) (?)8754334689108442333------------------
Wave
Graph
(?)Metric surfscale
Energy (?)1052391825300091623981330992640014000000000000000000
Wind
(km/h)
35
NE
25
N
20
N
10
W
0
W
10
ESE
20
ENE
20
ESE
35
ESE
30
ESE
15
SSW
20
WNW
25
WNW
15
W
20
WNW
15
W
30
W
15
NNW
15
W
25
SW
40
NW
45
NNW
35
N
30
N
20
NNW
20
NNW
20
NNW
10
WNW
10
S
10
ESE
15
ENE
10
E
10
ENE
10
NE
5
S
20
WNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		ononcrossglasscross-
off		crosscross-
off		cross-
off		cross-
off		offcross-
on		crosscrosscrosscrosscrosscross-
on		crosscross-
off		cross-
on		onononcross-
on		oncross-
on		crossoffcross-
off		cross-
on		crosscrosscross-
on		offcross-
on
High Tide
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Low Tide
/ height (m)
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Sun
30
Monday
31
Tuesday
01
Wednesday
02
Thursday
03
Friday
04
Saturday
05
Sunday
06
Monday
07
Tuesday
08
Wednesday
09
Thursday
10
Fri
11
Sunrise--7:39--7:37--7:35--7:33--7:31--7:30--7:28--7:26--7:24--7:22--7:20--7:18
Sunset8:23--8:24--8:27--8:28--8:29--8:30--8:31--8:34--8:35--8:36--8:37--8:38--
light snowlight snowcloudpart cloudclearpart cloudcloudcloudcloudmod rainlight raincloudcloudpart cloudpart cloudclearpart cloudclearclearlight snowcloudlight snowlight snowcloudcloudcloudcloudpart cloudpart cloudpart cloudpart cloudpart cloudcloudpart cloudcloudlight snow
Rain (mm)
---------61-------------------------
Temp. °C-1-1-3-1-1-122034223332123000-6-4-2-3-2-12321322
Feels °C (?)-10-10-10-5-5-5-4-4-9-4-1-4-5-3-3-3-2-5-3-2-10-11-12-15-11-10-10-8-4-2-2-3-3-1-1-4

Short Range Forecast: A dusting of new snow. Icy conditions (max 2°C on Tue afternoon, min -6°C on Tue morning). Winds increasing (calm on Mon night, fresh winds from the ESE by Wed morning).

Days 3-6 Weather Summary Light rain (total 7mm), mostly falling on Wed afternoon. Temperatures will be slightly above freezing (max 4°C on Wed night, min 1°C on Thu morning). Winds decreasing (fresh winds from the ESE on Wed afternoon, light winds from the SW by Fri night).

Days 6-9 Weather Summary A light covering of new snow mostly falling on Sat night. Icy conditions (max 3°C on Sat night, min -6°C on Mon morning). Winds increasing (light winds from the WNW on Sat afternoon, strong winds from the N by Sun night).

Long Range Forecast: A dusting of new snow. Icy conditions (max 3°C on Wed afternoon, min -2°C on Tue afternoon). Wind will be generally light.

  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
<span class="translation_missing" title="translation missing: en.leaflet.map_placeholder_alt">Map Placeholder Alt</span>
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Quick surf report for Union Bay:

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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

Information about the Union Bay Surf forecast

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

Union Bay is 173 km (107 miles) from the city of Marquette. If you plan a vacation in Lake Superior, look for hotels and other accommodation in Marquette. Marquette has rooms for a wide range of budgets as well as car hire and transport links.

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