May Indian Ocean Southwest monsoon becomes established indicating the onset of the rainy season over southern Asia. Rainshower and thunderstorm activity common across southeast Asia. Tropical cyclone activity continues in north Indian Ocean but is low with an average of about one system of tropical storm strength or greater.
Southwest monsoon begins in western Pacific bringing an increase in rain and thunderstorm activity.
May Arabian Gulf Haze, blowing sand and dust restrict visibility. Light northerly winds prevail No tropical threat.