January Weather in Brighton, United States

Last updated: June 24, 2025

In January, the average temperature in Brighton, United States hovers around 5°C (42°F). Temperatures can fluctuate significantly, with a minimum of -16°C (3°F) and a maximum of 23°C (73°F). Expect 105 mm (4.1 in) of precipitation spread over 9 days, contributing to an average humidity of 86%. Stay prepared for a mix of chilly and mild days!

January Temperature in Brighton

In January in Brighton, the average temperature is 5°C (42°F). Maximums can reach 23°C (73°F), while minimums can drop as low as -16°C (3°F). Be sure to pack for both warm and chilly weather when traveling during this time.

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

The chart illustrates January temperature patterns in Brighton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Brighton, January typically has an average temperature of 5°C (42°F), with highs reaching up to 23°C (73°F) and lows dropping to around -16°C (3°F).

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

January Precipitation in Brighton

In Brighton in January, the total precipitation amount reaches 105 mm (4.1 in) over the course of 9 days.

January Precipitation Trends in Brighton

The chart displays monthly precipitation patterns in Brighton, 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 Brighton, January typically receives around 105 mm (4.1 inches) of precipitation spread over approximately 9 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 Brighton

In Brighton in January, humidity is 86%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that penetrates your layers, making outdoor activities quite uncomfortable and prompting you to seek warmth indoors more often.

January Average Humidity in Brighton

This chart illustrates the average monthly humidity levels in Brighton, 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 Brighton is approximately 86%, 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 Brighton

In Brighton 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 Brighton, you can check the information here.

Maximum UV Index Levels in Brighton for January

The chart shows the monthly maximum UV Index (UVI) for Brighton 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 Brighton typically reaches 3, which falls under the moderate exposure category.

Data source: Brighton 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 Brighton Compares to Other Months

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

This table compares monthly weather conditions in Brighton, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (42°F)	105 mm (4.1 inches)	86%	moderate
February Weather	7°C (45°F)	172 mm (6.8 inches)	85%	high
March Weather	12°C (55°F)	170 mm (6.7 inches)	84%	high
April Weather	16°C (61°F)	133 mm (5.2 inches)	81%	very high
May Weather	22°C (72°F)	115 mm (4.5 inches)	83%	very high
June Weather	26°C (79°F)	109 mm (4.3 inches)	83%	extreme
July Weather	28°C (82°F)	116 mm (4.6 inches)	80%	extreme
August Weather	26°C (80°F)	111 mm (4.4 inches)	73%	very high
September Weather	24°C (76°F)	92 mm (3.6 inches)	70%	very high
October Weather	18°C (64°F)	119 mm (4.7 inches)	73%	high
November Weather	10°C (50°F)	80 mm (3.2 inches)	85%	moderate
December Weather	8°C (46°F)	145 mm (5.7 inches)	88%	moderate