Well... I didn't say predict accurately right?
I just say can estimate what to expect...
Better to be prepared than sorry, right?

Like last time I had a trip to Korea during summer, which the travel agent claim it hardly rain during that period.  But when I check the weather forecast just prior departure... there's a forecast of heavy storm for those past few days... and we did pack extra raincoats and umbrellas, and made extra arrangement for indoor activities just in case.

- Soap could be use to wash some light garments like your briefs or socks.

- dry them by hanging them over the lamp ( becarefull not to get it burned ) or, i prefer to use the hair dryer to do the job .

- Shower caps could be used as a rain coat for your camera. Simply make a hole big enuff to stuff your lens thru on the shower cap, then put the shower cap on your camera to protect it against rain, or sand ( if you're visiting desert )

-will add more if i remember anything.