Hudson Bay has fully frozen over during January. However, there is still open water north of Svalbard and in the North Water Polynya. It’s even possible to go swimming in the Nares Strait according to the latest AMSR2 concentration map from the Alfred Wegener Institute:

JAXA extent is currently 3rd lowest for the date, in a “statistical tie” with 2017:

Looking at the third dimension next, PIOMAS volume was second lowest for the date by a whisker at the end of January:

Here’s the associated sea ice thickness map:

For comparison puporses, here is the Alfred Wegener Institute’s CryoSat-2/Sentinel 3/SMOS Arctic sea ice thickness map at the end of January:

The overall distribution of sea ice thickness is similar to the PIOMAS map. However the visual similarity ends when you compare the two volume graphs:

[Update – February 13th]

JAXA extent is currently in a “statistical tie” with 2023 for 5th lowest for the date in the satellite era:

ERA5 data still hasn’t become available via WRIT so reverting to NCEP/NCAR R1 data for the moment, here are the MSLP and 925 hPa air temperature anomaly maps for January 2026:

The most notable features are high pressure, centred over the Chukchi Sea rather than the Beaufort Sea, and anomalous warmth above Baffin Bay.

Here too is the graph of NSIDC average extent for January:

Watch this space!