we have the wind to our backs
steal someone´s thunder
lightning in a bottle
rain on someone´s parade
(aguafiestas = partypooper)
a hazy memory
head in the clouds
tempest in a teapot (USA) / storm in a teacup (UK)
a perfect storm
where the sun dont shine
shine some daylight on the situation.
rainy day fund
the perfect storm
a windfall
long winded
the winds of change