January Weather in Brunswick, United States

Last updated: June 24, 2025

In Brunswick, United States, the average temperature in January hovers around -1°C (30°F). While you can expect the mercury to dip as low as -23°C (-10°F), it can occasionally rise to a balmy 17°C (62°F). This month also brings 62 mm (2.4 in) of precipitation over 7 days, coupled with an average humidity level of 80%, creating a chilly yet moist atmosphere.

January Temperature in Brunswick

In January in Brunswick, the average temperature is -1°C (30°F), with maximums reaching 17°C (62°F) and minimums dropping as low as -23°C (-10°F). Travelers should be prepared for a wide range of temperatures and dress in layers to stay comfortable during their visit.

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 -1°C (30°F), with highs reaching up to 17°C (62°F) and lows dropping to around -23°C (-10°F).

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

January Precipitation in Brunswick

In Brunswick in January, the total precipitation amount is 62 mm (2.4 in) observed over a span of 7 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 62 mm (2.4 inches) of precipitation spread over approximately 7 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Brunswick

In Brunswick in January, humidity is 80%. With an average temperature of -1°C (30°F), this humidity feels like an uncomfortable chill that seeps into your bones, making outdoor activities less enjoyable and travel quite challenging.

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 80%, 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 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.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (30°F)	62 mm (2.4 inches)	80%	moderate
February Weather	0°C (32°F)	51 mm (2.0 inches)	78%	moderate
March Weather	7°C (46°F)	115 mm (4.5 inches)	75%	high
April Weather	12°C (54°F)	92 mm (3.6 inches)	77%	very high
May Weather	19°C (66°F)	220 mm (8.6 inches)	82%	very high
June Weather	25°C (76°F)	143 mm (5.6 inches)	83%	extreme
July Weather	26°C (80°F)	114 mm (4.5 inches)	81%	extreme
August Weather	24°C (76°F)	99 mm (3.9 inches)	78%	very high
September Weather	22°C (72°F)	78 mm (3.1 inches)	72%	very high
October Weather	14°C (57°F)	121 mm (4.7 inches)	72%	high
November Weather	6°C (44°F)	49 mm (1.9 inches)	84%	moderate
December Weather	3°C (37°F)	37 mm (1.4 inches)	86%	moderate