What you can do?
Adjust light cycles:
If possible, turn the lights on during the cool night hours (e.g. 8pm-8am). I think that's out of the question hehe.
Improve air circulation and ventilation:
Additional fans or stronger exhaust air will help remove hot air.
Use humidifiers (carefully):
In very dry heat (RH 40%), some humidity can help - but not above 50% to avoid mold in the flower.
Dim LED lamps or increase the distance (if possible):
Many grow rooms overheat due to excessive lighting.
If you don't see any major signs of heat stress (stunted or splayed buds, curled leaves, dry spots), all is not lost. However, try to keep temperatures below 28 °C, especially in the last weeks of flowering, when aroma and resin production are at their most sensitive.