Wow great photo!,,,
There is a mixture of easterly Caribbean winds and north clouds, and on top of that, the high level from the SW causing a very large swell up presently covering all of the Stann Creak district, southern Belize district and eastern Cayo with lightning and must be some heavy rain.
Looks like today will be very cloudy, with possible rain anywhere, presently central Belize and there could be other swellups later today.
Temperatures in Belmopan : ( Coast usually cooler, hills even cooler )
Last night min. 24°C 75°F Yesterday max. 31°C 89°F Yesterday Rain 35 mm ( 1.4")