How hot is actually too hot. Too many mixed answers around.

Hot in veg can be tolerated, you can buy a humidifier and fill it with very cold water to mist around. The best way to drop temps is an ac unit if possible. But in flowering, you should definitely find a way to drop temps because 33C is real hot indoors. Provide more humidity and CO2 to your plants. Heat is a real threat, I hate it when growing (love it in rl) , flowering times extend and you get very fluffy buds with lower terpene profile and potency than cooler conditions. Lighter growing medium like coco would be ideal for summer growing as you can water every day and keep the roots cool and moist with no overwatering possibility. LEDs(which you use) seem to be a better option than HPS (which I use). I've seen no bigger threat than heat indoors honestly. Your plant will probably not die but production will surely be affected. Genetics that is resistant to heat will do better of course.