We will be on the same cruise. We did an April transatlantic crossing in 2019 and it went from hot to cool. I'm expecting the highs to be in the high 70s for the first 2 or 3 days, dropping to the low 70s and high 60's for the next 3 or 4 days. The highs in Ponta Delgado should be in the 60's.
Temperatures will get cooler as we head north across the Bay of Biscay. It looks like the high temperatures for France and Southern England are likely to be in the high 50's or low 60's. Of course, rain and stormy weather can blow my estimates out of the water. Needless to say, you need to do a lot of layering.
