It is the approximate southern border of the horse latitudes
in the Northern Hemisphere, meaning that much of the land area touching the 30th parallel is arid
. If there is a source of wind from a body of water the area would more likely be humid subtropical
At this latitude the sun
is visible for 14 hours, 5 minutes during the summer solstice
and 10 hours, 13 minutes during the winter solstice
, and the nighttime duration
lasts 9 hours, 55 minutes during the summer solstice and 13 hours, 47 minutes during the winter solstice.
On 21 June, the maximum altitude of the sun is 83.44 degrees and 36.56 degrees on 21 December.