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January Weather in Hartley, United Kingdom

Last updated: August 27, 2025

In January, the average temperature in Hartley, United Kingdom hovers around 5°C (41°F). Expect conditions to vary, with minimums dipping to -4°C (25°F) and maximums reaching up to 14°C (58°F). During this month, precipitation can amount to 52 mm (2.1 in) over 9 days, contributing to an average humidity level of a brisk 91%.

January Temperature in Hartley

In January in Hartley, the average temperature is 5°C (41°F), with maximums reaching up to 14°C (58°F) and minimums dipping as low as -4°C (25°F). Be prepared for chilly weather and pack layers to stay comfortable during your travels.

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

The chart illustrates January temperature patterns in Hartley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hartley, 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 -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec414346495562656459544744
Data source: Temperature data for Hartley 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 Hartley

In Hartley in January, the total precipitation amount is 52 mm (2.1 in) over the course of 9 days.

January Precipitation Trends in Hartley

The chart displays monthly precipitation patterns in Hartley, 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 Hartley, January typically receives around 52 mm (2.1 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec525252316375627146804885
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Hartley

In Hartley 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 Hartley

This chart illustrates the average monthly humidity levels in Hartley, 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 Hartley is approximately 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%86%85%82%81%76%73%80%89%92%92%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Hartley

In Hartley 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 Hartley.

Maximum UV Index Levels in Hartley for January

The chart shows the monthly maximum UV Index (UVI) for Hartley 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 Hartley typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875421
Data source: Hartley 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 Hartley Compares to Other Months

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

This table compares monthly weather conditions in Hartley, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)52 mm (2.1 inches)91%low
February Weather6°C (43°F)52 mm (2.1 inches)89%low
March Weather8°C (46°F)52 mm (2.0 inches)86%moderate
April Weather10°C (49°F)31 mm (1.2 inches)85%moderate
May Weather13°C (55°F)63 mm (2.5 inches)82%high
June Weather17°C (62°F)75 mm (3.0 inches)81%very high
July Weather18°C (65°F)62 mm (2.4 inches)76%very high
August Weather18°C (64°F)71 mm (2.8 inches)73%high
September Weather15°C (60°F)46 mm (1.8 inches)80%moderate
October Weather12°C (54°F)80 mm (3.1 inches)89%moderate
November Weather8°C (47°F)48 mm (1.9 inches)92%low
December Weather6°C (44°F)85 mm (3.4 inches)92%low

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