January Weather in Brighton, United States

Last updated: June 24, 2025

In Brighton, United States, the average temperature in January hovers around -1°C (31°F), with extremes ranging from a brisk -24°C (-11°F) to a mild 18°C (65°F). Expect a bit of moisture, with 14 mm (0.5 in) of precipitation spread over 3 days. Additionally, the average humidity sits at a comfortable 74%, making for a crisp, refreshing atmosphere.

January Temperature in Brighton

In January in Brighton, the average temperature is -1°C (31°F), with maximums reaching 18°C (65°F) and minimums plummeting to -24°C (-11°F). Be prepared for a wide temperature range and pack accordingly for your travels!

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 -1°C (31°F), with highs reaching up to 18°C (65°F) and lows dropping to around -24°C (-11°F).
JanFebMarAprMayJunJulAugSepOctNovDec313142505972777568504133
Data source: Temperature data for Brighton 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 Brighton

In Brighton in January, the precipitation amount is 14 mm (0.5 in) over the course of 3 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 14 mm (0.5 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec14144636843230281822148
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Brighton

In Brighton in January, humidity is 74%. With an average temperature of -1°C (31°F), this humidity feels like a brisk chill that cuts through layers of clothing, making outdoor activities uncomfortable and potentially damp, so travelers should dress warmly and prepare for the persistent moisture in the air.

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 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%75%66%62%74%76%75%80%79%77%74%80%
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 reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Brighton for better planning.

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 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec45710111212119643
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.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)14 mm (0.5 inches)74%moderate
February Weather-1°C (31°F)14 mm (0.6 inches)75%moderate
March Weather6°C (43°F)46 mm (1.8 inches)66%high
April Weather10°C (50°F)36 mm (1.4 inches)62%very high
May Weather15°C (59°F)84 mm (3.3 inches)74%extreme
June Weather22°C (72°F)31 mm (1.2 inches)76%extreme
July Weather25°C (77°F)30 mm (1.2 inches)75%extreme
August Weather24°C (75°F)28 mm (1.1 inches)80%extreme
September Weather20°C (69°F)18 mm (0.7 inches)79%very high
October Weather10°C (51°F)22 mm (0.9 inches)77%high
November Weather5°C (42°F)14 mm (0.5 inches)74%moderate
December Weather1°C (34°F)8 mm (0.3 inches)80%moderate

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