Without defining what we consider dissapointing we can't really say.
A lot of these type of questions are anecdotal and depend on subjective assessment.
If we look at 2013, 2018 and 2022 as producing the 'proper summers' then actually spring 2013 was persistently poor, spring 2018 was essentially a flip and spring 2022 was mild and dry but i had to look it up which suggests the weather experienced was somewhat forgettable.
What we know of March and April is that they will both come in fairly warm and wet so a more objective assessment would be to look at comparable years.
March above 7.7C and April above 9C yields...
2022
2019
2017
2014
1997
1961
1948
1945
1779
1734
March and April above 100m yields..
2001
1818
When we take out subjective anecdotal evidence, those are our best matches.