Index

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• Introduction
• North
• Center
• South
• Cyclones
• Best Time
• What to pack

Introduction

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In Vanuatu (formerly New Hebrides), the climate is influenced by the trade winds, and it's equatorial on the northern islands, ie hot and rainy all year round, while on the central and southern islands it's tropical, with a hot and rainy season from December to March, and a cool and drier season from May to October.
In fact, the islands are scattered, in the Pacific Ocean south of the equator, over an axis oriented from north to south, about 900 kilometers (550 miles) long; the southernmost islands are located at a latitude of 20 degrees south (but there are also two small uninhabited islands, Matthew and Hunter, which are at the 22nd parallel).



Many of the islands are volcanic, and have inland slopes which enhance precipitation. The rains are most abundant on the northernmost islands, where up to 4,000 millimeters (157 inches) of rain fall per year (see Vanua Lava), including 200 mm (8 in) per month even in the least rainy months (which are July and August) and more than 450 mm (17.5 in) in March (the rainiest). Proceeding south, the rains gradually decrease, down to 2,200/2,500 mm (80/100 in) on the southernmost islands, even though on the smallest and flat islands they go down to 1,500 mm (60 in).
The period from December to March is hot, humid and rainy across the country, with highs around 29/31 °C (84/88 °F) and lows around 23/25 °C (73/77 °F). The rains come in the form of intense downpours, which do not last long, so that soon the sun shines again.

North

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The winter season, from July to September, is warm on the northern islands, with highs around 27/28 °C (81/82 °F), as we can see from the average temperatures of Vanua Lava.

The rains in Vanua Lava, as in general on the northern islands having an equatorial climate, are abundant throughout the year, although they decrease slightly in the austral winter. Here is the average rainfall.

On the northern islands, the sea is warm enough to swim in all year round, as we can see in the following table.

Moving south, winter becomes gradually cooler; however, on the islands of Espiritu Santo (see Luganville) and Malakula the minimum temperature remains above 20 °C (68 °F) even in the cooler months.

Center

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In the capital, Port Vila, located on the central island of Éfaté, the daytime temperature is around 25/26 °C (77/79 °F), while on the southern islands it drops to 23/24 °C (73/75 °F). At night the average temperature is around 21/22 °C (70/72 °F) on the northern islands, and around 17/18 °C (63/64 °F) on the central and southern islands, where it can sometimes even drop to 13/15 °C (55/59 °F).

In Port Vila, as in general on the central and southern islands, the decrease in rainfall from May to October is evident. Here is the average rainfall.

The amount of sunshine in Port Vila, and in general in Vanuatu, is not great, but it's neither poor: the sun often shines, but some cloudiness, maybe associated with showers and thunderstorms, is always possible.

The sea remains quite warm to swim in also on the central islands, where the sea temperature drops to 26 °C (79 °F) from June to October. Here are the average sea temperatures near Port Vila.

South

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On the southernmost islands, the temperature is even cooler, so that from July to September the average daily temperature drops to 20 °C (68 °F), as we can see from the data of Aneityum.

Consequently, on the southernmost islands the sea is cooler as well, though it's still warm enough for swimming, in fact, from July to October the water temperature drops to 24 °C (75 °F), as we can see from the data of Aneityum.

Tropical cyclones

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The Vanuatus are affected by tropical cyclones. Cyclones are usually formed from November to mid-May, though they are most likely from late December to early April. Outside of this period, there has been Cyclone Xavier, which brushed the northern islands in late October 2006. A particularly intense cyclone was Pam, which hit the islands in March 2015.

Best Time

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On the northern islands of Vanuatu (down to Espiritu Santo and Malakula), the best time is from July to September because it is less hot and rainy. On the central and southern islands, which include the capital, the best time is from May to October; since from June to September on the central and southern islands it can get cool, you may prefer the period mid-May to mid-June, and even more the month of October, when it's a bit warmer and heavy rains are still to come. Even in the least rainy months, however, there is no lack of showers, especially on the northernmost islands.

What to pack

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In winter (June to August): pack light clothes for the day, a scarf for the breeze, a sweatshirt for the evening, and possibly a light jacket on the southern islands; a light raincoat or umbrella. When going to the reef, you can bring snorkeling equipment, including water shoes or rubber-soled shoes.
In summer (December to February): pack tropics-friendly, loose-fitting clothing, a sun hat, a scarf for the breeze, a light sweatshirt for the evening, a light raincoat or umbrella.

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