On the Marshall Islands, the climate is tropical, hot all year round, with little variation in temperature. The trade winds blow constantly, tempering the heat.
The islands are divided into two groups, Ralik and Ratak, both stretched from north to south, but the main difference in the climate of the islands lies in the rainfall and depends on latitude: the central and southern islands are rainy all year round, so their climate can be called equatorial, while on the islands lying north of the tenth parallel (Enewetak, Bikini, Rongelap, Taka, Utirik, Taongi), there is a relatively dry season from December to April. In the northern group, annual precipitation is around 1,500 millimeters (60 inches), with a maximum between August and October, when it exceeds 200/250 mm (8/10 in) per month, and a minimum from January to March, when it drops below 40 mm (1.6 in) per month. During La Niña years, when the rains decrease throughout the islands, these northern atolls, which are already less rainy in normal years, can experience drought.
Moving south, rainfall becomes progressively more abundant, so much so that it can reach 2,500 mm (100 in) per year already in Kwajalein atoll. At this latitude, the rains are still acceptable between January and March, since rainfall drops below 110 mm (4.3 in) per month.


Here are the average temperatures in the northern atoll of Enewetak. As you can see, even though the temperatures are stable, there is a slightly warmer period from June to October, while December and January are the coolest months.
Enewetak - Average temperatures
Min (°C)242424252526252525252524
Max (°C)293030303031303131313029
Min (°F)757575777779777777777775
Max (°F)848686868688868888888684

As mentioned, the northern islands are the least rainy ones. Here is the average precipitation in Enewetak.
Enewetak - Average precipitation


In the capital, Majuro, the temperature is definitely stable throughout the year: lows are around 25 °C (77 °F), while highs are around 30 °C (86 °F). The temperature rarely drops below 22 °C (72 °F) at night or exceeds 32/33 °C (90/91 °F) during the day. Here are the average temperatures.
Majuro - Average temperatures
Min (°C)252525252525252525252525
Max (°C)303030303030303030303030
Min (°F)777777777777777777777777
Max (°F)868686868686868686868686

In the southernmost atolls, the rains are really abundant: in Majuro, 3,300 mm (130 in) of rain fall per year, with a minimum of 180 mm (7 in) in February and a maximum of 360 mm (14 in) in October. Here is the average precipitation in Majuro.
Majuro - Average precipitation

Since the rains occur in the form of short and intense downpour or thunderstorm, and therefore do not last long, the amount of sunshine on the Marshall Islands is at least acceptable even in the wettest months.
Here are the sunshine hours per day in Majuro.
Majuro - Sunshine


The sea on the Marshall Islands is pleasantly warm all year round, as you can see in the following table.
Majuro - Sea temperature
Temp (°C)292828292929292929292929
Temp (°F)848282848484848484848484

Tropical cyclones

The Marshall Islands can be affected by tropical cyclones; in particular, many of the typhoons that later head towards South-east Asia are formed in this area. For this reason, cyclones do not generally affect these islands at the peak of their strength, since they are still in the early stages. Typically, typhoons occur from April to December, although they are more frequent between August and November. However, since the sea is always warm, they can sometimes also occur from January to March, although during this period, only not intense tropical depressions are usually formed.

Best Time

The best time to visit the Marshall Islands runs from January to March in the central and southern atolls, since it is the least rainy period, even though there is still a fair amount of showers and thunderstorms. On the northern islands, instead, the best period runs from December to April, when the rains are quite rare and generally not abundant.

What to pack

All year round, bring tropics-friendly, loose-fitting clothing, a sun hat, a scarf for the breeze, a light sweatshirt for the evening, and a light raincoat or umbrella.
When going to the reef, you can bring snorkeling equipment, including water shoes or rubber-soled shoes.

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