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Algonquin Park Ice Conditions

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Algonquin Park's ice out was officially declared in the late afternoon of April 10, 2021 when a boat safely navigated from the Lake Opeongo Access Point to the Happy Isle Portage in the North Arm of Lake Opeongo, see below for more details.

Lake of Two Rivers Ice Out Time Lapse - April 2021

Watch ice out at Lake of Two Rivers in Algonquin Park in less than a minute (see above). Ice out in 2021 was the third earliest date in 57 years of detailed record keeping. This time lapse from April 1 to April 10, 2021 at Lake of Two Rivers is brought to you by The Friends of Algonquin Park, in partnership with Killarney Lodge. The top left corner of the video features the date and time. The bottom left corner of the video shows the weather conditions.

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Live Views of Algonquin Park

This year's ice out date of April 10, 2021 is one of the earliest recorded in 50+ years of detailed record keeping in Algonquin Park (see below for historical data). The official ice out date for Algonquin Park (and Lake Opeongo) has ranged from March 29 (2012) to as late as May 15 (1972). During the last 50+ years, the average ice out date for Lake Opeongo, Algonquin's largest lake, is April 28.

A satellite image from April 10, 2021 (below) shows all backcountry lakes in Algonquin Park are ice free. Satellite and ground observations also show that bare ground is widespread with snow and ice patches persisting primarily under dense conifers and on hard packed sections of trails.


Algonquin Park Images

A selection of recent images from Algonquin Park. See the caption for the date and location. More images are available on The Friends of Algonquin Park Facebook Page.

Image: Lake of Two Rivers in Algonquin Park on April 1, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 1, 2021 (click to enlarge).

Image: Lake of Two Rivers in Algonquin Park on April 1, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 1, 2021 (click to enlarge).

Image: Lake of Two Rivers in Algonquin Park on April 2, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 2, 2021 (click to enlarge).

Image: Lake of Two Rivers in Algonquin Park on April 2, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 2, 2021 (click to enlarge).

Image: Lake of Two Rivers in Algonquin Park on April 3, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 3, 2021 (click to enlarge).

Image: Lake of Two Rivers in Algonquin Park on April 3, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 3, 2021 (click to enlarge).

 

Image: Lake of Two Rivers in Algonquin Park on April 4, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 4, 2021 (click to enlarge).

Image: Lake of Two Rivers in Algonquin Park on April 4, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 4, 2021 (click to enlarge).

 

Image: Lake of Two Rivers in Algonquin Park on April 5, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 5, 2021 (click to enlarge).

Image: Lake of Two Rivers in Algonquin Park on April 5, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 5, 2021 (click to enlarge).

 

Image: Lake of Two Rivers in Algonquin Park on April 6, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 6, 2021 (click to enlarge).

Image: Lake of Two Rivers in Algonquin Park on April 6, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 6, 2021 (click to enlarge).

 

Image: Lake of Two Rivers in Algonquin Park on April 7, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 7, 2021 (click to enlarge).

Image: Lake of Two Rivers in Algonquin Park on April 7, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 7, 2021 (click to enlarge).

 

Image: Lake of Two Rivers in Algonquin Park on April 7, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 8, 2021 (click to enlarge).

Image: Lake of Two Rivers in Algonquin Park on April 7, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 8, 2021 (click to enlarge).

 

Image: Lake of Two Rivers in Algonquin Park on April 9, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 9, 2021 (click to enlarge).

Image: Lake of Two Rivers in Algonquin Park on April 9, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 9, 2021 (click to enlarge).

 

Image: Lake of Two Rivers in Algonquin Park on April 10, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 10, 2021 (click to enlarge).

Image: Lake of Two Rivers in Algonquin Park on April 10, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 10, 2021 (click to enlarge).

 


Latest Satellite Imagery

Below is satellite imagery of the Algonquin Park area. Imagery is taken on a regular basis with the best images recorded on completely clear days, which can be infrequent during late winter/spring. Images are posted to highlight the overall changes in ice conditions in south-central Ontario.

Satellite Image of  Algonquin Park on April 10, 2021

Image: Satellite image of Algonquin Park taken on April 10, 2021, showing nearly all lakes in Algonquin Park free of ice. Lakes showing black are open like Georgian Bay, Lake Simcoe, and Lake Nipissing, while lakes showing various shades of gray remain ice covered but the ice is of poor quality. The strongest ice always appears bright white (click to enlarge the image).


Satellite Image Comparison

Below are satellite images of the Algonquin Park area from recent years for comparison purposes. Official ice out dates for Lake Opeongo (Algonquin Park's largest lake and traditionally one of the last to shed its ice cover) are listed with each image.

Satellite Image in Algonquin Park on April 7, 2020

Algonquin Park Ice Cover April 10, 2019

Algonquin Park Ice Cover April 5, 2018

Algonquin Park Ice Cover April 8, 2017

Algonquin Park Ice Cover April 9, 2016

Algonquin Park Ice Cover April 12, 2015

Algonquin Park Ice Cover on April 9, 2014

Algonquin Park Ice Cover on April 15, 2013

The spring of 2012 was record early by about a month and ice on Lake Opeongo melted by March 29. All lakes in Algonquin Park were ice free by April 2, 2012.

Algonquin Park Ice Conditions April 2, 2012


Algonquin Park Ice Out History

Typically, Algonquin Park's lakes become ice free in late April/early May. Over the past 50+ years, the average ice out date for Lake Opeongo, Algonquin's largest lake, is April 28. Given variations in winter and spring conditions, the ice out dates for Lake Opeongo have ranged from March 29 (2012) to as late as May 15 (1972). During 2020 the ice out date for Lake Opeongo was April 30 (see graph below). The ice out date for Lake Opeongo (and Algonquin Park) in 2021 was April 10.

Technically, the official ice out date for Algonquin Park is recorded when a boat can safely navigate from the Lake Opeongo Access Point to the Happy Isle Portage in the North Arm of Lake Opeongo.

Algonquin Park Ice Out History


Spring and Safety

Please remember that The Friends of Algonquin Park advises against ice travel due to a range of environmental variables and the difficulty in detecting hazards. Be safe, stay off the ice. Park visitors are encouraged to stay away from fast moving and icy cold water at this time of year.

Water temperature in spring remains just above freezing for many days after ice out. Submersion in cold water can quickly lead to hypothermia (a potentially deadly situation). Reduce the risks, by wearing a PFD, stay close to shore, paddle according to your skill/experience level, pack the proper safety gear, and don't take unnecessary risks. Learn more about hypothermia and cold water.

For the latest Algonquin Park closures and restrictions see Algonquin Park Advisories and COVID-19 Updates.


Related Information

 

Reserve your developed or backcountry campsite for your next visit.

Share your passion for Algonquin Park by becoming a member or donor.

Special regulations for Algonquin's special fishery.