From Belmopan...
There is a general movement of high level tropical air coming up from the south resulting in overcast conditions. The Caribbean air also has a fair amount of patchy cloud, so there is still rain showers over the sea just off Belize.
With increased amounts of cloud around there will be less sunny periods and could be some showers later.
Temperatures in Belmopan:
Today is probably going to be similar, to yesterday :
Tue, max. 30°C 85°F Last night min. 22°C 72°F ( Coast usually cooler, hills even cooler )
Ambergris Caye:
https://www.wunderground.com/q/locid:BHXX0104;loctype:1
Belmopan:
https://www.wunderground.com/personal-weather-station/dashboard?ID=MD1029#history
Caye Caulker:
https://www.wunderground.com/personal-weather-station/dashboard?ID=IBELIZED2#history