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January Weather in Brunswick, United States

Last updated: June 24, 2025

In Brunswick, United States, the average temperature in January hovers around -2°C (29°F). Expect chilly days, with minimum temperatures plummeting to -22°C (-8°F) and a rare maximum of 20°C (68°F). During this time, precipitation typically accumulates to 83 mm (3.3 in) over approximately 13 days, accompanied by high humidity levels of 88%. Prepare for a delightful winter experience!

January Temperature in Brunswick

In January in Brunswick, the average temperature is -2°C (29°F), with maximums reaching 20°C (68°F) and minimums dropping as low as -22°C (-8°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both chilly and unexpectedly warm days.

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

The chart illustrates January temperature patterns in Brunswick, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Brunswick, January typically has an average temperature of -2°C (29°F), with highs reaching up to 20°C (68°F) and lows dropping to around -22°C (-8°F).
JanFebMarAprMayJunJulAugSepOctNovDec293239496170747267564135
Data source: Temperature data for Brunswick 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 Brunswick

In Brunswick in January, the precipitation amount is 83 mm (3.3 in) over a span of 13 days.

January Precipitation Trends in Brunswick

The chart displays monthly precipitation patterns in Brunswick, 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 Brunswick, January typically receives around 83 mm (3.3 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec839498125126153144111911109492
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Brunswick

In Brunswick 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 Brunswick

This chart illustrates the average monthly humidity levels in Brunswick, 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 Brunswick 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 Brunswick

In Brunswick 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 Brunswick, you can check the information here.

Maximum UV Index Levels in Brunswick for January

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

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

This table compares monthly weather conditions in Brunswick, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)83 mm (3.3 inches)88%moderate
February Weather0°C (32°F)94 mm (3.7 inches)88%moderate
March Weather4°C (40°F)98 mm (3.9 inches)87%high
April Weather10°C (50°F)125 mm (4.9 inches)87%very high
May Weather16°C (62°F)126 mm (5.0 inches)81%very high
June Weather21°C (70°F)153 mm (6.0 inches)83%very high
July Weather24°C (75°F)144 mm (5.7 inches)82%very high
August Weather22°C (72°F)111 mm (4.4 inches)76%very high
September Weather20°C (67°F)91 mm (3.6 inches)77%very high
October Weather14°C (57°F)110 mm (4.3 inches)82%high
November Weather5°C (42°F)94 mm (3.7 inches)89%moderate
December Weather2°C (35°F)92 mm (3.6 inches)86%low

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