About the weather and loads of rain

It rained this afternoon (30th January) in huge bucketfuls and the ground outside was like a lake. 24ºC, but it felt a little cool.
Tanzania lies not far from the equator, and well inside the Tropic of Cancer. The sun is never far from overhead, and summer and winter don't really apply. It does get cooler in September, and during the rainy season the temperatures fluctuate between about 27º and 35º during the day.
If you compare Dodoma, our nearest city, with Gravesend in the UK which has scored both the hottest and the coolest days from time to time, there is one thing that always stands out - just how regular, like a heartbeat, the diurnal temperature and pressure is. It goes up during the day, and down during the night, regular as clockwork.
These are from Wunderground, from 28th January 2016.

GRAVESEND:

and DODOMA: