BEAT DOWN – we can use it to talk both about SUN and RAIN, meaning that the sun is shining very brightly or it’s raining heavily.
Don’t forget that BEAT is irregular: BEAT – BEAT – BEATEN.
Rain: SP: caer a plomo; FR: taper; RU: палить.
Sun: SP: caer chuzos de punta; FR: tomber à torrents; RU: ливмя лить.
I can’t believe it’s winter, the sun has been BEATING DOWN on us the whole day.
The rain BEAT DOWN very hard.
MIND the particle, in both cases we use DOWN, sth is FALLING!