WISC-Watch Buoys have been removed for the season:



      This site is intended to provide real-time wave information at the Mainland Sea Caves, which is part of the beautiful Apostle Islands National Lakeshore. We only intend to provide real-time information, so please check the weather forecast before going on the water! If you are new to kayaking, knowledge of rescue and safety procedures can be learned from local outfitters.

Latest Wave Info


12:00 PM

Wave Model height 0.7 ft

The following rating system was devised in conjunction with kayak outfitters that routinely guide trips to the sea caves. The recommended skill level is color coded based on wave height.

< 1 ft Novice
1-2 ft Intermediate
> 2 ft Advanced

What is Reported?

Past Pictures




Height (ft.)

Max Wave


Wind Speed


Wind Gust





Temp (°F)


12:00 PM 0.7 Model N/A N/A N/A N/A

L     R

11:30 AM 0.7 Model N/A N/A N/A N/A

L     R

11:00 AM 0.7 Model 9.2 16.1 SW N/A

L     R

10:30 AM 0.7 Model 10.3 -- SW N/A

L     R

10:00 AM 0.7 Model 10.3 15.0 SW N/A

L     R

9:30 AM 0.7 Model 8.1 -- S N/A

L     R

9:00 AM 0.7 Model 8.1 12.8 S N/A

L     R

8:30 AM 0.7 Model 6.9 -- S N/A

L     R

8:00 AM 0.7 Model 6.9 9.2 S N/A

L     R

7:30 AM 0.7 Model 5.8 -- SW N/A

L     R

7:00 AM 0.8 Model 4.7 9.2 SW N/A

L     R

6:30 AM 0.8 Model 5.8 -- W N/A

L     R

6:00 AM 0.8 Model 4.7 10.3 W N/A

L     R

Model    - Indicates reported wave is a model result, not a measured wave.

** - Waves traveling from the East or Northeast may be blocked from view at Meyers Beach. Use caution.

N/A stands for Not Available. Wind Data are taken from NOAA station at Devils Island.