The climate of Christmas Island, a territory of Australia located in the Indian Ocean, is tropical, with quite stable temperatures, around 26/27 °C (79/81 °F) during the day from June to November, and around 28/29 °C (82/84 °F) from December to May.
Here are the average temperatures of the largest city, Flying Fish Cove (or The Settlement).
The Settlement - Average temperatures
MonthJanFebMarAprMayJunJulAugSepOctNovDec
Min (°C)232323232423232222232323
Max (°C)282828282827262626272728
Min (°F)737373737573737272737373
Max (°F)828282828281797979818182

The main difference in the climate is found in the rainfall, which amounts to 2,100 millimeters (83 inches) per year, and it's much more abundant in the rainy season, from November to June, when the north-western monsoon prevails, while the rains are rarer and shorter from July to October, when the south-east trade winds prevail. The rainiest months are January and February, when about 300/350 mm (12/14 in) of rain fall per month, while the driest months are August and September, when precipitation amounts to about 40/50 mm (1.5/2 in) per month. Here is the average precipitation.
The Settlement - Average precipitation
MonthJanFebMarAprMayJunJulAugSepOctNovDecYear
Prec.(mm)295350290220175155954545701502102100
Prec.(in)11.613.811.48.76.96.13.71.81.82.85.98.382.7
Days1818201715141111981214167

The north-west monsoon is accompanied by high humidity, which brings low clouds and mists above the inland hills, where a forest grows; it can also be accompanied by strong winds that hit in particular the northern coast, and occasionally by cyclones (see below).

Between October and November, at the beginning of the rainy season, the famous migration of red crabs occurs on the island: millions of crabs come out from the forest, where they had been hiding in the dry season, and migrate to the beach, to mate and lay their eggs.

Red crabs on Christmas Island

The sea is warm enough to swim in all year round, as you can see in the following table.
Christmas Island - Sea temperature
MonthJanFebMarAprMayJunJulAugSepOctNovDec
Temp (°C)282929292928272726272828
Temp (°F)828484848482818179818282

Tropical cyclones



Christmas Island is on the edge of the area in which the tropical cyclones of the Southern Indian Ocean can form, so it is not directly affected by them in the acme of their intensity, but it's brushed by tropical storms or cyclones in the early stages of their formation. In theory, this can happen from November to mid-May, even though in the last thirty years it happened only from November to April, with a peak in December.

Best Time



The best time to visit Christmas Island is from July to October, in fact it is the least rainy and the sunniest of the year; in particular, the months of August and September stand out as the driest.

What to pack



All year round, bring light clothes, a scarf for the breeze, a light sweatshirt for the evening, and a light raincoat or umbrella.