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Algonquin Park Ice Conditions
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Algonquin Park Official Ice Out Observed on April 27, 2025
Algonquin Park's official ice out was observed on April 27, 2025. Field observations confirm the North Arm of Lake Opeongo was ice covered on the morning of April 27, 2025, impeding travel to the Happy Isle portage. However, by the afternoon strong winds had aided ice removal and a boat was safely able to navigate from the Lake Opeongo Access Point to the Happy Isle Portage in the North Arm of Lake Opeongo, thus marking the official ice out date for Algonquin Park. The timing of this year's ice out is about average in the last 60 years of detailed record keeping (see below for historical ice out information).
Interestingly, satellite imagery taken on the same afternoon shows that not all ice has disappeared from Algonquin Park. As of the afternoon of April 27, 2025, several lakes remain partially ice covered with ice likely impeding navigation (see below). This remaining fragile ice is expected to melt in the next few days with temperatures forecast to be above average.
Many lakes including Lake of Two Rivers became ice free a day prior to Lake Opeongo (on April 26, 2025) when strong winds assisted with ice removal. See the Lake of Two Rivers time-lapse below.
Current snow depth ranges from bare ground to deep enough to limit access by 4x4 vehicles. Gravel roads, trails, and portages have a variety of conditions within short distances, including bare ground, soft/muddy/wet, plus snow and ice covered.
Lake of Two Rivers Ice Out Observed on April 26, 2025
Lake of Two Rivers became ice free on April 26, 2025. This date is one day later than the average ice out date observed over the last 45+ years.
The four week time-lapse (below) documents ice out at Lake of Two Rivers using more than 3,220 images. This time-lapse from March 26 to April 27, 2025 is brought to you by The Friends of Algonquin Park, in partnership with Killarney Lodge.
Lake of Two Rivers is a medium sized lake located in south central Algonquin Park. Lake of Two Rivers entire lake surface, covering 315 hectares (780 acres), is easily observed from Highway 60 allowing for detailed freeze and thaw data to be recorded over the years. On average, Lake of Two Rivers freezes on December 11 and thaws on April 25. Ice out dates can vary widely and in the past 45+ years, ice out on Lake of Two Rivers has ranged from as early as March 30 (2012) to as late as May 10 (2018). On average Lake of Two Rivers sheds its ice cover 3 days earlier than Lake Opeongo, Algonquin Park's largest lake, and the basis for declaring Algonquin Park's ice out (see below for historical ice out information).
Algonquin Park Images - Spring 2025
A selection of recent images from Algonquin Park. See the caption for the date and location.
Image: Lake of Two Rivers in Algonquin Park on March 26, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on March 26, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on March 27, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on March 27, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on March 28, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on March 28, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on March 29, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on March 29, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on March 30, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on March 30, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on March 31, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on March 31, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 1, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 1, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 2, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 2, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 3, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 3, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 4, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 4, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 5, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 5, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 6, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 6, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 7, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 7, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 8, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 8, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 9, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 9, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 10, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 10, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 11, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 11, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 12, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 12, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 13, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 13, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 14, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 14, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 15, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 15, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 16, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 16, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 17, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 17, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 18, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 18, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 19, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 19, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 20, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 20, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 21, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 21, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 22, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 22, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 23, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 23, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 24, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 24, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 25, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 25, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 26, 2025 (click to enlarge).
Image: Lake of Two Rivers in Algonquin Park on April 26, 2025 (click to enlarge).
Latest Satellite Imagery - Spring 2025
Below is satellite imagery of the Algonquin Park area. Imagery is taken on a regular basis with the best images recorded when cloud cover is minimal, which can be infrequent during late winter/spring. Clear images are posted to highlight the overall changes in ice conditions in south-central Ontario. Ice showing white is the strongest, ice with shades of gray is of decreasing quality, while waterbodies showing black are open.
Image: Partially ice covered Booth Lake in Algonquin Park on April 27, 2025. Click to enlarge.
Image: Mostly ice covered White Partridge Lake in Algonquin Park on April 27, 2025. Click to enlarge.
Image: Ice covered Presto Lake (near the Shall Lake Backcountry Access Point) in Algonquin Park on April 27, 2025. Click to enlarge.
Algonquin Park Ice Out History
For 60 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). The most recent ice out dates for Lake Opeongo are:
| Lake Opeongo | ||||||
| 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | |
| April 27 | April 10 | April 23 | April 25 | April 10 | April 30 | |
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.
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.
Cold Water Paddling
Even though Algonquin Park lakes will become ice free, water temperature during spring remains just above freezing for many days after ice out. Submersion in icy cold water can quickly lead to severe hypothermia, a potentially deadly situation. Reduce the risks by:
- wearing a PFD (personal flotation device) while on the water;
- staying close to shore;
- paddling according to your skill/experience level and the weather conditions;
- packing the proper safety gear; and
- not taking unnecessary risks.
- Learning more about hypothermia and cold water before you paddle.
For the latest Algonquin Park closures and restrictions see Algonquin Park Advisories.
Related Information
- Algonquin Park Webcam
- Spring in Algonquin Park
- Current Weather Conditions
- Fishing in Algonquin Park
- The Raven Talks About Fish and Lakes
- Fishes of Algonquin Provincial Park
- Fishing in Algonquin Provincial Park
- Backcountry Canoeing
- Canoe Routes Map of Algonquin Provincial Park - Explore Online
