Around the time this song was written Jimi was being really overworked with no time off, but on the day this song was written the open-air show that he was doing was called off because it was raining, so he got the day off hence 'Rainy day, dream away'
Around the time this song was written Jimi was being really overworked with no time off, but on the day this song was written the open-air show that he was doing was called off because it was raining, so he got the day off hence 'Rainy day, dream away'