@SW-User
Yes, I used to think that, but remember, Google gives you the
most popular answer, not necessarily the
right answer. (If you use the calculator functionality, that's supposed to be correct, but if it's based on Java, that had all kinds of numerical issues.)
Look at a discussion of what different people consider it to be.
It was because of something posted here that I looked *that* up and found definitions which fit more with the weather people experience...let's see...
This is from a dictionary accessed by a Google search for "definition of summer":
summer
noun
...
2. The warmest season of the year: in the United States reckoned as the months June, July, and August; in Great Britain as May, June, and July. See season.
That's one indication.
The Wikipedia article on it has
The date of the beginning of summer varies according to climate, tradition, and culture.
...
Northern temperate zone
Astronomical season
21 June – 23 September
Meteorological season
1 June – 31 August
Solar (Celtic) season
1 May – 31 July
Southern temperate zone
Astronomical season
22 December – 21 March
Meteorological season
1 December – 28/29 February
Solar (Celtic) season
1 November – 31 January