I have also re-experienced two things that I missed last year:
1) Spanish Siestas. Or, more specifically, siestas that last for hours, during which the streets are empty, the parks are empty, and it is the most fun to go shopping in the supermarket.
2) Thunderstorms. Yes, I know technically there are thunderstorms in the UK, but not like this. These are really dramatic storms that appear out of nowhere, flooding the cobbled streets and crash directly above you. So lovely and atmospheric when you're inside watching out the window.
image from here. Yes it's not my thunderstorm, but I like this picture.

