Af or tropical wet
is a tropical climate where
precipitation
occurs all year long.
Monthly temperature variations in this climate are usually less than 3°C (37°F).
Because of intense surface heating and high humidity,
cumulus and cumulonimbus clouds (thunderstorms) form early in the afternoons almost every day.
Daily highs are about 32°C (90°F).
Radiative cooling during the evening is limited because of cloud cover and high humidity.
Nighttime daily temperatures average about 22°C (72°F).