The Prophet (SalAllahu 'alayhi wa sallam) said: "The earth has been made for me a place of prayer and purification, so whenever the time of prayer comes for any man of my ummah, let him pray." (Bukhari & Muslim). Do not delay the prayer. Pray wherever you may be apart from a graveyard or bathroom. The brothers here are praying next to a waterfall up in the mountains of the Peak District in North of England. There was a torrential rainstorm and even hail falling as they prayed..."Verily, As-Salaah (the prayer) is enjoined on the believers at fixed hours"

[al-Nisa' 4:103]