January Weather in Farnham, United Kingdom

Last updated: August 27, 2025

In January, the average temperature in Farnham, United Kingdom is a crisp 5°C (41°F). Expect the mercury to dip as low as -5°C (24°F), while it can soar to a comfortable 14°C (58°F). Prepare for a wet month, with 49 mm (1.9 in) of precipitation spread over 10 days. With an average humidity of 91%, make sure to bundle up and stay dry!

January Temperature in Farnham

In January in Farnham, the average temperature is 5°C (41°F), with maximums reaching up to 14°C (58°F) and minimums dropping as low as -5°C (24°F). Be prepared for a chilly adventure and pack accordingly to fully enjoy your travels!

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

The chart illustrates January temperature patterns in Farnham, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Farnham, January typically has an average temperature of 5°C (41°F), with highs reaching up to 14°C (58°F) and lows dropping to around -5°C (24°F).

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

January Precipitation in Farnham

In Farnham in January, the total precipitation amount is 49 mm (1.9 in) over the course of 10 days.

January Precipitation Trends in Farnham

The chart displays monthly precipitation patterns in Farnham, 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 Farnham, January typically receives around 49 mm (1.9 inches) of precipitation spread over approximately 10 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 Farnham

In Farnham in January humidity is 91%. With an average temperature of 5°C (41°F), this humidity feels like a damp chill that seeps into your bones, making traveling outdoors a rather uncomfortable experience unless you're dressed warmly and prepared for the moist air that clings to your skin.

January Average Humidity in Farnham

This chart illustrates the average monthly humidity levels in Farnham, 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 Farnham is approximately 91%, 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 Farnham

In Farnham in January, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Farnham.

Maximum UV Index Levels in Farnham for January

The chart shows the monthly maximum UV Index (UVI) for Farnham 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 Farnham typically reaches 1, which falls under the low exposure category.

Data source: Farnham 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 Farnham Compares to Other Months

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

This table compares monthly weather conditions in Farnham, 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 (41°F)	49 mm (1.9 inches)	91%	low
February Weather	6°C (43°F)	53 mm (2.1 inches)	89%	low
March Weather	7°C (46°F)	59 mm (2.3 inches)	86%	moderate
April Weather	9°C (49°F)	37 mm (1.4 inches)	85%	high
May Weather	13°C (55°F)	70 mm (2.7 inches)	79%	high
June Weather	16°C (62°F)	76 mm (3.0 inches)	80%	very high
July Weather	18°C (65°F)	68 mm (2.7 inches)	71%	very high
August Weather	17°C (63°F)	68 mm (2.7 inches)	76%	high
September Weather	15°C (59°F)	46 mm (1.8 inches)	82%	high
October Weather	12°C (53°F)	92 mm (3.6 inches)	90%	moderate
November Weather	8°C (46°F)	56 mm (2.2 inches)	92%	low
December Weather	6°C (44°F)	85 mm (3.4 inches)	92%	low