Umbrellas were invented for sun, not rain
The word umbrella comes from the Latin umbra, meaning shade, and parasol literally means for the sun. For most of their history these were sunshades, prized in hot climates to keep noble skin pale and cool. Only in rainy northern Europe did the device get reimagined as rain gear, and the two words finally split: a parasol to block the sun, an umbrella to keep off the downpour.