Map from Google - Wallis_And_Futuna

The climate of the Wallis and Futuna archipelago, located in the Pacific Ocean south of the Equator and belonging to France, is equatorial, hot and humid throughout the year, with a warmer and more humid period from November to April, and a slightly cooler period from May to October. The difference is still little: during the day, the temperature goes from 86/88 °F to 82.5 °F in the Futuna Islands, and from 86/88 °F to 84 °F in the northern island of Wallis, which is closer to the Equator. However, in the period from May to October, and in particular from June to September, the south-east trade winds blow constantly, cooling the air.
Here are the average temperatures of Futuna.
Average temperatures - Futuna
Min (°F)777777777775757575757577
Max (°F)868886868484828284848686

For swimming, the sea is warm all year round, as we can see in the following table (even the sea temperature is slightly higher in the island of Wallis).
Sea temperature - Futuna
Sea (°F)848484848282818181828284

The rains are plentiful, as they exceed 120 inches per year; the wettest period is the warmest, when more than 12 inches per month fall: this happens from October to April in Wallis and from December to April in Futuna, which, being more distant from the Equator, has a shorter peak in the rains. However, in both islands it rains all year round: precipitation never drops below 4 inches per month, although between a shower and the other there is plenty of room for sunshine.
Here is the average precipitation.
Average precipitation - Futuna
Prec. (in)14.414.614.812.2105.

The amount of sunshine is acceptable, because the rains, though frequent and sometimes heavy, are usually short-lived.

Wallis and Futuna is exposed to tropical cyclones from November to mid-May, although they have a higher frequency from December to March.


When to go

The best time to visit Wallis and Futuna runs from June to August, being the least hot and the least rainy; however, even in this period showers and thunderstorms can occur.

What to pack

All year round, tropics-friendly, loose fitting clothing, sun hat, a scarf for the breeze, a light sweatshirt for the evening, light raincoat or umbrella.