Climate - Tuvalu

Tuvalu (formerly Ellice Islands), an archipelago located in the Pacific Ocean to the south of the Equator, has an equatorial climate, ie hot, humid and rainy throughout the year. The rains, occurring in the form of downpours of thunderstorms, can be intense, but usually do not last long, and do not greatly reduce the hours of sunshine.
Temperatures are very stable, around 25/26 °C (77/79 °F) at night and 31/32 °C (88/90 °F) during the day. The trade winds blow all year round, but especially in the period from April to October, tempering a little the heat. At night it never gets cold, and the temperature never drops below 20 °C (68 °F). On warmer days, temperatures rarely exceed 34 °C (93 °F).
Precipitation is abundant, ranging from 2,600 millimeters (102 inches) per year in the northern atolls to 3,500 mm (138 in) in the central-southern ones.

Funafuti

Here are the average temperatures of the capital, Funafuti, located at 8 degrees south latitude.

In Funafuti, 3,500 mm (138 in) of rain fall per year, with a peak between December and March, when rainfall is equal to or greater than 300 mm (12 in) per month, and a minimum (very relative...) between April and October, when it drops below 275 mm (10.8 in) per month. In 2011, a year of La Niña, only 1,700 mm (67 in) of rain fell, and there was a long period with little rain, from February to October.
Here is the average precipitation in Funafuti.

The amount of sunshine at Tuvalu is decent but not exceptional, as clouds that can give rise to rain showers are frequent, but as mentioned, they do not last long. Here are the average sunshine hours per day.



The sea in Tuvalu is warm enough to swim in all year round, as we can see in the following table.

Tropical cyclones

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Tuvalu is affected by the tropical cyclones of the South Pacific. Cyclones are usually formed from November to mid-May, though they are most likely from late December to early April. Sometimes, however, they have affected the archipelago outside of this period, as happened with Bebe in late October 1972 and Keli in June 1997 (both El Niño periods, in which cyclones are more likely).
Being not far from the Equator, the islands are generally affected by cyclones at the beginning of their formation, but considering that Tuvalu is one of the flattest countries in the world, it may be affected by flooding and storm surges, even when cyclones are not are very strong or if they pass at a certain distance. The northernmost islands (Nanumea, Niutao, Nanumanga), closer to the Equator, are located at the edge of the area, where cyclones are more rare, while the most affected islands are the southernmost ones (Nukulaelae and Niulakita).

When to go and what to pack in Tuvalu