Questions tips for preserve dvds

which of these options is more detrimental to the lifetime and durability of files burned on DVD-R (temperature heat, humidity or light rh)? the temperature in my town is 30 ~ 36 ° C, humidity RH 45% ~ 66% (without rain), 30ºC morning 36ºC afternoon 31ºC night, my discs are dvds verbatim azo mkm, I want to learn to keep my CD discs and dvd but I do not have air conditioners and will not buy it