I’d avoid the school holidays whilst you can! Our usual break has gone from £3k to £9k now my eldest is in reception 😭 Temperature wise It really depends on what the facilities are like. We’ve done Greece and Cyprus when it’s been 35C with a 2 year old and managed fine. She napped just after lunch in our hotel room which had AC and we’d do pool/beach time either first thing in the morning or late afternoon. The resorts we use have splash parks with loads of shade and plenty of ice cream and fresh fruit available to keep cool. We had her in a full length spf swimming costume and hat with factor 30 applied every 2-3 hours. Although there is no part of being by a body of water with a toddler which is relaxing at all 😂
We went to Spain last August when she was 8 months and it was hot but we managed with pram fan and lots of shade and extra naps and fluids and in and out of the water
It can be really hot still We went tenerife I'm an October snd was still super hot (not with baby) Aslong as plenty of sun cream, shade and drinks should be okay though