To dream of heat represents intensity or passion. Some area of your life being pushed very hard. Alternatively, heat may reflect a negative situation or the worsening of problems. It may also represent pressure you or someone else is feeling.
Positively, heat in a dream may reflect something in waking life that spares you from terrible conditions. A sympathetic, comforting, or supportive situation during a difficult time.
Hot weather in a dream may reflect a lot of negativity or uncertainty in your relationships or work life. A constant state of stress or conflict.