structural:scholar_edition
Climate

Tuvalu experiences two distinct seasons, a wet season from November to April and a dry season from May to October. Westerly gales and heavy rain are the predominant weather conditions from November to April, the period that is known as Tau-o-lalo, with tropical temperatures moderated by easterly winds from May to October.

Tuvalu experiences the effects of El Niño and La Niña, which is caused by changes in ocean temperatures in the equatorial and central Pacific. El Niño effects increase the chances of tropical storms and cyclones, while La Niñan effects increase the chances of drought. Typically the islands of Tuvalu receive between 200 and 400 mm (8 and 16 in) of rainfall per month. The central Pacific Ocean experiences changes from periods of La Niña to periods of El Niño.