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James Bay - southern half

Warnings

Forecast

Marine Forecast

Issued 05:00 AM CST 05 December 2025

Today Tonight and Saturday.

Wind southwest 20 knots diminishing to light this morning then increasing to west 20 early this evening. Wind increasing to west 30 Saturday evening.

Flurries.

Freezing spray warning in effect.

Moderate freezing spray ending this morning. Moderate freezing spray beginning this evening becoming severe Saturday morning.

Temperatures minus 9 falling to minus 16 near noon Saturday.

Waves

Issued 05:00 PM CST 04 December 2025
Tonight and Friday. Seas 3 metres subsiding to 2 this evening.

Extended Forecast

Issued 05:00 AM CST 05 December 2025
Sunday Wind west 25 knots increasing to west 30 late in the day.
Monday Wind west 30 knots diminishing to west 20 late in the day.
Tuesday Wind west 15 knots diminishing to light.

Ice Forecast

Issued 11:00 AM EST 5 December 2025 Today Tonight and Saturday 4 tenths grey ice including 1 tenth grey-white ice except 9 tenths grey ice including 1 tenth grey-white ice in the western section. Consolidated grey-white ice along parts of the coasts. 

[ Canadian Ice Service ]

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Map of Hudson - Hudson Bay marine weather areas Akulivik Airport Coral Harbour Airport Eastmain Airport Inukjuak Airport La Grande Rivière Airport Moosonee Airport Peawanuck Airport Fort Severn Airport Waskaganish Airport Churchill Airport Wemindji Airport Baker Lake Airport Rankin Inlet Airport Sanikiluaq Airport Whale Cove Airport Kinngait (Cape Dorset Airport) Iqaluit Airport Wager Bay Kimmirut Airport Cape Kakkiviak Tasiujaq Airport Salluit Airport Quaqtaq Airport Kuujjuaq Airport Kangiqsualujjuaq Airport Kangirsuk Airport Kangiqsujuaq Airport Kuujjuarapik Airport Puvirnituq Airport Aupaluk Airport Chesterfield Inlet Airport Ivujivik Airport Umiujaq Airport Arviat Airport
Legend:
buoy Buoy
land station Land Station
Ice Conditions

Ice Forecasts

Issued 11:00 AM EST 5 December 2025 Today Tonight and Saturday

Ice Edge

Ice edge estimated from Quebec near 6025N 6454W to 5917N 6657W to
5931N 6815W to 6115N 6915W to 6215N 6924W to Baffin Island near
6156N 6636W. Sea ice south then north of the ice edge.

Ice Coverage

4 tenths grey ice including 1 tenth grey-white ice except 9 tenths
grey ice including 1 tenth grey-white ice in the western section.
Consolidated grey-white ice along parts of the coasts.

Warnings

Warnings (In effect)

Freezing spray warning in effect

James Bay - southern half

Issued 05:00 AM CST 05 December 2025

Moderate or severe freezing spray is occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 4:45 AM EST 5 December 2025 Today Tonight and Saturday At 1200 UTC Friday low 987 mb located at 62N 73W.
By 0000 UTC Sunday low 1006 mb located at 69N 88W.

At 1200 UTC Friday low 994 mb located at 60N 88W.
By 0000 UTC Sunday low 985 mb located at 57N 80W.

At 1200 UTC Friday quasi-stationary trough located from 60N 60W
to 67N 67W.

Hudson - Hudson Bay Area

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Marine Weather for Canada

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