For 4 months we slept under just a sheet. We still can, now at the start of October. Although then our cold feet will wake us around 5 am.
So we have taken the duvet out of the closet and put it on our feet. I wonder when it will be cold enough at night to want it around us all night.
When I exercise in the mornings I wear my jogging pants and my long-sleeved t-shirt. (I exercise outside on the roof). But the temperatures during the day are still a lovely 26 to 29 degrees C.