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January Weather in Alger, United States

Last updated: June 24, 2025

In January, the average temperature in Alger, United States hovers around -2°C (29°F). Expect some chilly nights, with minimum temperatures plummeting to -25°C (-13°F), while daytime highs can reach a relatively mild 19°C (67°F). Rainfall is not uncommon, with an average precipitation of 72 mm (2.8 in) spread over 9 days. Additionally, the atmosphere can feel quite humid, with an average humidity level of 88%.

January Temperature in Alger

In January in Alger, the average temperature is -2°C (29°F). The maximum can reach 19°C (67°F), while the minimum can drop as low as -25°C (-13°F). Be prepared for a wide temperature range and pack accordingly if you plan to travel during this month.

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

The chart illustrates January temperature patterns in Alger, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alger, January typically has an average temperature of -2°C (29°F), with highs reaching up to 19°C (67°F) and lows dropping to around -25°C (-13°F).
JanFebMarAprMayJunJulAugSepOctNovDec293241506372757368574135
Data source: Temperature data for Alger 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 Alger

In Alger in January, the precipitation amount is 72 mm (2.8 in) over the course of 9 days.

January Precipitation Trends in Alger

The chart displays monthly precipitation patterns in Alger, 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 Alger, January typically receives around 72 mm (2.8 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec7292981061301271088873948670
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Alger

In Alger in January, humidity is 88%. With an average temperature of -2°C (29°F), this humidity feels like a biting chill in the air that penetrates layers of clothing, making outdoor activities challenging and potentially uncomfortable for travelers.

January Average Humidity in Alger

This chart illustrates the average monthly humidity levels in Alger, 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 Alger is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%87%88%81%82%81%78%78%82%89%86%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Alger

In Alger 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 Alger, you can check the information here.

Maximum UV Index Levels in Alger for January

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

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

This table compares monthly weather conditions in Alger, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)72 mm (2.8 inches)88%moderate
February Weather0°C (32°F)92 mm (3.6 inches)87%moderate
March Weather5°C (41°F)98 mm (3.9 inches)87%high
April Weather10°C (51°F)106 mm (4.2 inches)87%very high
May Weather17°C (63°F)130 mm (5.1 inches)81%very high
June Weather22°C (72°F)127 mm (5.0 inches)82%very high
July Weather24°C (76°F)108 mm (4.3 inches)81%very high
August Weather23°C (73°F)88 mm (3.5 inches)78%very high
September Weather20°C (68°F)73 mm (2.9 inches)78%very high
October Weather14°C (57°F)94 mm (3.7 inches)82%high
November Weather5°C (42°F)86 mm (3.4 inches)89%moderate
December Weather2°C (35°F)70 mm (2.7 inches)86%low

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