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Colour-coded Weather Alerts

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James Bay - southern half

Warnings

Forecast

Marine Forecast

Issued 05:00 PM CST 04 December 2025

Tonight and Friday.

Wind west 30 knots diminishing to southwest 20 near midnight and to light Friday morning. Wind increasing to west 20 Friday evening.

Flurries.

Freezing spray warning in effect.

Severe freezing spray becoming moderate near midnight and ending Friday morning. Moderate freezing spray beginning Friday evening.

Low tonight minus 13. High Friday minus 6.

Waves

Issued 05:00 AM CST 04 December 2025
Today Tonight and Friday. Seas 2 metres subsiding to 1 Friday morning.

Extended Forecast

Issued 05:00 PM CST 04 December 2025
Saturday Wind west 20 knots increasing to west 30 late in the day.
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.

Ice Forecast

Issued 11:00 AM EST 4 December 2025 Today Tonight and Friday 1 tenth new ice except 9 tenths new ice including 3 tenths grey 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 4 December 2025 Today Tonight and Friday

Ice Edge

Ice edge estimated from Quebec near 6025N 6454W to 5845N 6745W to
6115N 6915W to 6215N 6924W to Baffin Island near 6156N 6636W. Sea
ice south then north of the ice edge.

Ice Coverage

1 tenth new ice except 9 tenths new ice including 3 tenths grey ice
along parts of the coasts.

Warnings

Warnings (In effect)

Freezing spray warning in effect

James Bay - southern half

Issued 5:00 PM CST 04 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 PM EST 4 December 2025 Tonight and Friday At 0000 UTC Friday low 984 mb located at 62N 73W.
By 0000 UTC Saturday low 993 mb located at 66N 80W.

By 0000 UTC Saturday low 992 mb located at 58N 89W.

Hudson - Hudson Bay Area

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Marine Weather for Canada

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