The average platform temperature across 2023 was 28.2C although between June and October, the average was above 30C.
https://www.bbc.com/news/articles/cy080ez4r5yo
The Victoria line is the hottest on the London Underground, data from Transport for London shows.
I think some months ago an English chap had posted about the London tunnels' heat here.
https://www.bbc.com/news/articles/cy080ez4r5yo
Victoria line hottest on London Underground
www.bbc.comThe Victoria line is the hottest on the London Underground, data from Transport for London shows.