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January Weather in Mars, United States

Last updated: June 24, 2025

In Mars, United States, the average temperature in January hovers around -1°C (30°F). While chilly days can drop to a brisk -23°C (-10°F), it’s not uncommon to experience warmer highs of 21°C (70°F). Expect 99 mm (3.9 in) of precipitation over approximately 13 days, contributing to an average humidity of 88%. Prepare for a month where winter's chill meets unexpected warmth!

January Temperature in Mars

In January in Mars, the average temperature is -1°C (30°F). Maximum temperatures can reach 21°C (70°F), while minimums can plummet to as low as -23°C (-10°F). Be prepared for a wide range of temperatures if you're traveling during this time!

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

The chart illustrates January temperature patterns in Mars, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mars, January typically has an average temperature of -1°C (30°F), with highs reaching up to 21°C (70°F) and lows dropping to around -23°C (-10°F).
JanFebMarAprMayJunJulAugSepOctNovDec303440506169747267564135
Data source: Temperature data for Mars generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Mars

In Mars in January, the precipitation amount is 99 mm (3.9 in) over the course of 13 days.

January Precipitation Trends in Mars

The chart displays monthly precipitation patterns in Mars, 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 Mars, January typically receives around 99 mm (3.9 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec991221061351491451489212312999101
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

January Humidity in Mars

In Mars in January humidity is 88%. With an average temperature of -1°C (30°F), this humidity feels like a biting chill that penetrates through your layers, making travel uncomfortable as every gust of wind becomes a sharp reminder of the cold and damp air surrounding you.

January Average Humidity in Mars

This chart illustrates the average monthly humidity levels in Mars, 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 Mars is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%87%87%81%83%82%76%77%82%89%86%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Mars

In Mars in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Mars, you can check the information here.

Maximum UV Index Levels in Mars for January

The chart shows the monthly maximum UV Index (UVI) for Mars 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 Mars typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
Data source: Mars 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 Mars Compares to Other Months

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

This table compares monthly weather conditions in Mars, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)99 mm (3.9 inches)88%moderate
February Weather1°C (34°F)122 mm (4.8 inches)88%moderate
March Weather5°C (41°F)106 mm (4.2 inches)87%high
April Weather10°C (51°F)135 mm (5.3 inches)87%very high
May Weather16°C (62°F)149 mm (5.9 inches)81%very high
June Weather21°C (70°F)145 mm (5.7 inches)83%very high
July Weather23°C (74°F)148 mm (5.8 inches)82%very high
August Weather22°C (72°F)92 mm (3.6 inches)76%very high
September Weather19°C (67°F)123 mm (4.9 inches)77%very high
October Weather13°C (56°F)129 mm (5.1 inches)82%high
November Weather5°C (41°F)99 mm (3.9 inches)89%moderate
December Weather2°C (35°F)101 mm (4.0 inches)86%low

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