January Weather in Ailuk, Marshall Islands

Last updated: August 23, 2025

In January, the average temperature in Ailuk, Marshall Islands reaches a pleasant 27°C (81°F). Temperatures typically range from a minimum of 25°C (77°F) to a maximum of 28°C (83°F), making it a comfortable time of year. However, expect some rain with an average precipitation of 51 mm (2.0 in) spread over 14 days. With an average humidity level of 82%, preparations for a humid climate are essential.

January Temperature in Ailuk

In January in Ailuk, the average temperature is 27°C (81°F). Maximums can reach 28°C (83°F) and minimums can be as low as 25°C (77°F). This pleasant climate makes it an ideal time to explore the outdoors and enjoy various activities in Ailuk.

January Weather in Ailuk: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Ailuk, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ailuk, January typically has an average temperature of 27°C (81°F), with highs reaching up to 28°C (83°F) and lows dropping to around 25°C (77°F).

Data source: Temperature data for Ailuk generated using information from the Copernicus Climate Change Service.

January Precipitation in Ailuk

In Ailuk in January, the precipitation amount is 51 mm (2.0 in) over the course of 14 days.

January Precipitation Trends in Ailuk

The chart displays monthly precipitation patterns in Ailuk, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Ailuk, January typically receives around 51 mm (2.0 inches) of precipitation spread over approximately 14 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Ailuk

In Ailuk in January humidity is 82%. With an average temperature of 27°C (81°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel more exhausting, and leaving you longing for the relief of air-conditioned spaces during your travels.

January Average Humidity in Ailuk

This chart illustrates the average monthly humidity levels in Ailuk, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Ailuk is approximately 82%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Ailuk

In Ailuk in January, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Ailuk.

Maximum UV Index Levels in Ailuk for January

The chart shows the monthly maximum UV Index (UVI) for Ailuk in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Ailuk typically reaches 12, which falls under the extreme exposure category.

Data source: Ailuk January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How January Weather in Ailuk Compares to Other Months

Weather in Ailuk varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Ailuk, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Ailuk, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	27°C (81°F)	51 mm (2.0 inches)	82%	extreme
February Weather	27°C (80°F)	52 mm (2.0 inches)	81%	extreme
March Weather	27°C (80°F)	78 mm (3.1 inches)	82%	extreme
April Weather	27°C (81°F)	111 mm (4.4 inches)	83%	extreme
May Weather	27°C (81°F)	158 mm (6.2 inches)	81%	extreme
June Weather	27°C (81°F)	153 mm (6.0 inches)	80%	extreme
July Weather	27°C (82°F)	158 mm (6.2 inches)	78%	extreme
August Weather	27°C (82°F)	215 mm (8.5 inches)	76%	extreme
September Weather	27°C (82°F)	253 mm (9.9 inches)	77%	extreme
October Weather	27°C (81°F)	270 mm (10.6 inches)	78%	extreme
November Weather	27°C (82°F)	249 mm (9.8 inches)	80%	extreme
December Weather	27°C (81°F)	73 mm (2.9 inches)	82%	very high