January Weather in Mejillones, Chile

Last updated: August 22, 2025

In January, the average temperature in Mejillones, Chile is a pleasant 20°C (69°F). Temperatures can range from a cool 16°C (61°F) to a warm 26°C (78°F). Fortunately, you'll likely experience dry weather, with only 4 mm (0.1 in) of precipitation spread over 0 days. The air tends to be quite humid, with an average humidity of 83%.

January Temperature in Mejillones

In January in Mejillones, the average temperature is 20°C (69°F). Maximums can reach 26°C (78°F), while minimums can drop to as low as 16°C (61°F). This mild climate makes Mejillones an ideal destination for travelers seeking pleasant weather.

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

The chart illustrates January temperature patterns in Mejillones, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mejillones, January typically has an average temperature of 20°C (69°F), with highs reaching up to 26°C (78°F) and lows dropping to around 16°C (61°F).

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

January Precipitation in Mejillones

In Mejillones in January, the precipitation amount is 4 mm (0.1 in) recorded over a span of 0 days.

January Precipitation Trends in Mejillones

The chart displays monthly precipitation patterns in Mejillones, 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 Mejillones, January typically receives around 4 mm (0.1 inches) of precipitation spread over approximately 0 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 Mejillones

In Mejillones in January, humidity is 83%. With an average temperature of 20°C (69°F), this humidity feels like a warm embrace, making every step slightly more laborious and the air thick with moisture, which can be quite stifling for traveling.

January Average Humidity in Mejillones

This chart illustrates the average monthly humidity levels in Mejillones, 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 Mejillones is approximately 83%, 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 Mejillones

In Mejillones in January, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in Mejillones.

Maximum UV Index Levels in Mejillones for January

The chart shows the monthly maximum UV Index (UVI) for Mejillones 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 Mejillones typically reaches 15, which falls under the extreme exposure category.

Data source: Mejillones 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 Mejillones Compares to Other Months

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

This table compares monthly weather conditions in Mejillones, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	20°C (69°F)	4 mm (0.1 inches)	83%	extreme
February Weather	21°C (69°F)	1 mm (0.1 inches)	84%	extreme
March Weather	20°C (68°F)	3 mm (0.1 inches)	84%	extreme
April Weather	18°C (65°F)	7 mm (0.3 inches)	83%	very high
May Weather	17°C (62°F)	10 mm (0.4 inches)	80%	very high
June Weather	16°C (60°F)	13 mm (0.5 inches)	79%	high
July Weather	15°C (59°F)	14 mm (0.5 inches)	77%	high
August Weather	15°C (59°F)	11 mm (0.4 inches)	75%	very high
September Weather	15°C (59°F)	10 mm (0.4 inches)	77%	extreme
October Weather	15°C (60°F)	8 mm (0.3 inches)	77%	extreme
November Weather	17°C (63°F)	6 mm (0.3 inches)	79%	extreme
December Weather	19°C (66°F)	5 mm (0.2 inches)	78%	extreme