Krabi's weather is almost the same as Phuket with average temperatures
around 75ºF to 89ºF (24ºC to 32ºC) year round.
The best time to visit Krabi is from November to March when humidity
and temperatures average 28C and cool breezes keep things comfortable.
The hottest time is April - May, with temperatures ranging from
80ºF to 95ºF (27ºC up to 36ºC). There are frequent
short heavy thundery showers, offering welcome relief from the high
temperature and humidity.
Locals enjoy June, July and August, since the weather is usually
fine and most of the usual haunts remain uncrowded. The usual
pattern is brief but heavy showers, with plenty of sunshine between
downpours. Everything is a little less expensive at this time of
year, as well. Temperatures range between 70ºF and 90ºF
(20ºC to 33ºC).
During September and early October it is a good idea to remember
your umbrellas. The one bright point to this time of year is that
the beaches, outdoor restaurants and streets are relatively uncluttered
by visitors. And even at this time, you still get long intervals
of sunshine between the heavy showers. There are also lots of low
season activities, both water and land based, offer themselves
in Krabi during this wettest part of the summer season.