How many bees? I know you won’t be counting them.
Bees and wasps are completely different. The forager bees go out of the hive looking for pollen, nectar, and water during the day which helps keep the temperature down.
So is it bees are around the weather station or are they trying to set up a hive? It is highly unlikely to be the later as most bees live in colonies and that contains 30000 - 50000 bees. Of course there are exceptions such as Australian native bees that we have locally are solo.
They also build the hive to maintain a constant temperature. But when they get overcrowded they do swam and move to find/make new hives.