Possible that the 3 all time warmest springs in the CET record will have come in the last /current 3 years.

CET has 2026 slightly down on the previous 2 at the moment, but locally this might be the warmest in a few days time.

This site:

https://www.southamptonweather.co.uk/wxtempdetail.php?year=2026 

...although unofficial is interesting for Southampton, less than ten miles from here. It currently has a mean across all spring months 0.4°C up on 2025.