Welcome!

      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.

For more information on winter ice caves follow these links:

https://www.nps.gov/apis/mainland-caves-winter.htm

https://www.facebook.com/apostleislandsnationallakeshore/

Latest Wave Info

01/19/2018

4:30 PM

ICE

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

Time

01/19/2018

Wave

Height (ft.)

Max Wave

(ft.)

Wind Speed

(mph)

Wind Gust

(mph)

Wind

 Direction

Water

Temp (°F)

Pictures

4:30 PM ICE ICE N/A N/A N/A N/A

N/A

4:00 PM ICE ICE 15.0 21.9 SW N/A

picture

3:30 PM ICE ICE 18.3 -- SW N/A

N/A

3:00 PM ICE ICE 15.0 24.2 SW N/A

picture

2:30 PM ICE ICE 18.3 -- SW N/A

N/A

2:00 PM ICE ICE N/A N/A N/A N/A

picture

1:30 PM ICE ICE N/A N/A N/A N/A

N/A

1:00 PM ICE ICE 13.9 18.3 W N/A

picture

12:30 PM ICE ICE 15.0 -- SW N/A

N/A

12:00 PM ICE ICE 16.1 19.7 SW N/A

picture

11:30 AM ICE ICE 12.8 -- SW N/A

N/A

11:00 AM ICE ICE 9.2 15.0 SW N/A

picture

10:30 AM ICE ICE 11.4 -- SW N/A

N/A

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

++ - Indicates a freak wave.

** - Waves traveling from the East or Northeast may be underestimated by the sensor due to the sensor location. Use caution.

N/A stands for Not Available. Wind Data is taken from NOAA's weather station at Devils Island and will often lag wave data.