Reunion has no spring and no autumn and the sunset is very short. Winter time in Reunion starts in mid may and ends in october. Summer time starts in november and ends in april. It can be very cold in winter time!
Climate Chart from Reunion
Ile de la reunion, the highest mountain is over 3000 meters. But also here it is much drier in the west coast than on the east coast. in the mountains it can get very fresh. The rainy season is between November and mid May. What is related to the cyclon season.