Climate and monthly weather forecast
Marshall Islands

The Marshall Islands, a picturesque archipelago of 29 coral atolls and five islands in the Central Pacific Ocean, boasts a geology that contributes to its unique climate. These islands are located near the equator, which results in a tropical rainforest climate, or "Af" according to the Köppen classification. The mercury hovers around a balmy 27°C (80.6°F) to 32°C (89.6°F) throughout the year, showing very little variation. There are typically two distinct periods in the annual climate cycle: the dry season, also known as "Rairok", and the wet season, or "Aelan Eok". Rainfall is copious, with annual accumulations exceeding 3000mm (118.11") on most islands. However, the rainfall is not uniform across the country; the northern islands receive less precipitation than the southern ones. Trade winds, blowing predominantly from the northeast, bring significant relief to the humid conditions, especially between December and April.

For tourists planning a visit, the months from December to April prove to be the most favourable, coinciding with the Rairok or the dry season. During this period, the country experiences less rainfall, making it ideal for outdoor activities. The temperatures range from 26°C (78.8°F) to 29°C (84.2°F), while the trade winds from the northeast provide a refreshing contrast to the tropical humidity. The water temperatures are also quite pleasant, staying around 27°C (80.6°F), providing excellent conditions for snorkelling, diving and beach activities.

The wet season, or Aelan Eok, between May and November, is considered less ideal for tourism due to the high humidity and frequent rain. Rainfall during these months can go beyond 300mm (11.81") per month, and storms are not uncommon. Temperatures, while still warm, from 27°C (80.6°F) to 30°C (86°F), coupled with high humidity levels, might make the conditions uncomfortable for some visitors. This season is also known for the increased likelihood of tropical cyclones, especially between August and November.

In the Marshall Islands, the concept of 'spring' as seen in temperate climates does not apply due to their equatorial location. However, for reference purposes, the March to May period corresponds to the onset of the wet season. Temperatures remain warm, averaging between 28°C (82.4°F) and 30°C (86°F). Rainfall begins to increase during these months, with precipitation levels reaching up to 300mm (11.81"). Despite the rains, the weather remains mostly pleasant, albeit humid.

From June to August, the Islands are well into the wet season, which can be equated to a tropical 'summer'. Temperatures continue to be warm, ranging from 27°C (80.6°F) to 29°C (84.2°F). Rainfall is prevalent, and occasional storms can occur during this time, with rainfall levels going beyond 300mm (11.81") per month. The high humidity combined with temperatures can make these months feel particularly warm.

Autumn, from September to November, is still part of the wet season in the Marshall Islands. Temperatures continue to hover around the high 20s, from 27°C (80.6°F) to 29°C (84.2°F). Rainfall remains high and the risk of tropical cyclones increases. Despite the potential for cyclones and significant rainfall, the islands' vibrant ecosystem thrives, making it an intriguing time for nature lovers and researchers.

The period from December to February marks the transition to the dry season or 'winter' in the Marshall Islands. The islands experience reduced rainfall and the temperatures remain comfortably warm, between 26°C (78.8°F) and 28°C (82.4°F). The northeast trade winds pick up during this period, providing relief from the high humidity and contributing to the season's appeal. Despite the label of 'winter', the weather remains tropical and inviting for outdoor activities.

January in the Marshall Islands marks the beginning of the dry season, and the country experiences relatively lower rainfall compared to other months. The average rainfall in January is around 160mm (6.3"), which is considerably less than the peaks seen in the wet season. Weather in January »

February, similar to January, is within the dry season or "Rairok" in the Marshall Islands. This month continues the trend of decreased rainfall and slightly cooler temperatures typical of the dry season. The average rainfall further reduces to approximately 130mm (5.12"), making it one of the driest months of the year. February experiences similar temperature ranges as January, with average highs of 29°C (84.2°F) and lows around 25°C (77°F). Weather in February »

March signifies the transition from the dry season to the wet season in the Marshall Islands. While it is still part of the dry season, or "Rairok," it shows the initial signs of the impending "Aelan Eok" or wet season. Rainfall begins to increase during this month, with an average precipitation level rising to 200mm (7.87"). The average high temperature in March remains stable around 29°C (84.2°F), similar to the preceding months, while the average low is about 25°C (77°F). Weather in March »

April in the Marshall Islands marks the official onset of the wet season, or "Aelan Eok", when rainfall starts to escalate compared to the previous dry months. Average precipitation levels rise substantially, with a monthly average of about 280mm (11.02"). Weather in April »

May in the Marshall Islands continues the wet season, or "Aelan Eok", with an increase in rainfall compared to the previous months. Average precipitation levels rise to about 310mm (12.2"), making it one of the rainier months of the year. Weather in May »

June represents the peak of the wet season, or "Aelan Eok," in the Marshall Islands, characterized by the highest rainfall levels of the year. The average precipitation in June is about 340mm (13.39"), making it one of the rainiest months. Weather in June »

July in the Marshall Islands continues the peak of the wet season, or "Aelan Eok," with rainfall levels remaining high. The average precipitation in July is around 330mm (12.99"), making it, along with June, one of the rainiest months of the year. Weather in July »

August in the Marshall Islands signifies the gradual transition towards the end of the wet season, or "Aelan Eok". While rainfall levels remain relatively high, there is a slight decrease compared to the peak wet months of June and July. Weather in August »

September in the Marshall Islands marks a further transition from the wet season, or "Aelan Eok," towards the dry season. The rainfall in September decreases significantly compared to the peak wet season months, with average precipitation levels dropping to about 250mm (9.84"). Weather in September »

October in the Marshall Islands signifies the onset of the dry season, or "Rairok", as rainfall levels continue to decrease. The average precipitation in October falls to about 200mm (7.87"), representing a significant reduction compared to the wet season months. Weather in October »

November in the Marshall Islands firmly establishes the dry season, or "Rairok", as rainfall levels continue their downward trend. The average precipitation in November is about 180mm (7.09"), marking a substantial decrease compared to the preceding wet season months. Weather in November »

December in the Marshall Islands is well within the dry season, or "Rairok", characterized by further reductions in rainfall levels. The average precipitation in December drops to 160mm (6.3"), the lowest for the year, marking a significant contrast to the wet season months. Weather in December »