ok, i would try and get your lighting regime to use the day time ie warmest part of the day for you, to have your lights out,
so at night when its cooler, your light would be on, until perhaps 2pm till 8pm as at this time it would cool down for you,
so at night when its cooler, your light would be on, until perhaps 2pm till 8pm as at this time it would cool down for you,