The link identified in April 2018 no longer appears to work.
As of this morning, the link to the Met Office digital library and archive index for the period 1940-1959 is at
https://digital.nmla.metoffice.gov.u...6-a7d8c3eceb84
This page links to individual years, e.g. this is the 1944 reports:
https://digital.nmla.metoffice.gov.u...-0f50de991118/
And this is February 1944 (a particular interest for me for my ongoing work on Steinbock):
https://digital.nmla.metoffice.gov.u...-d065701b351e/
All this is probably common knowledge to members of this forum but I spent an hour this morning finding it out for myself - I should have done a TOCH forum search first, shouldn't I (rather than finding this thread afterwards)?! And I agree this stuff is pure gold for establishing the weather conditions in which Luftwaffe operations over the UK actually took place.
Updated link offered for what it's worth.
Simon