How does a Jedi master stay dry? With the Lightsaber Umbrella of course which looks like a lightsaber with an umbrella canopy on it.
My Korean is sadly lacking but it looks like you have a choice of blue, red or white lightsaber colours (or the closest LED equivalent available on Earth). The handle can also work as a flashlight should you need one. It seems that a smaller version is also available for those younger jedis-still-in-training.
The price is around $40 USD before shipping.