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January Weather in Treorchy, United Kingdom

Last updated: August 27, 2025

In January, the average temperature in Treorchy, United Kingdom hovers around 4°C (40°F). While you can expect temperatures to dip to a minimum of -6°C (22°F), they can also rise to a pleasant 13°C (55°F). During this month, precipitation is likely, with about 82 mm (3.2 in) falling over 12 days. Notably, the average humidity is a high 88%, making it an impressively moist time of year!

January Temperature in Treorchy

In January in Treorchy, the average temperature is 4°C (40°F), with maximums reaching 13°C (55°F) and minimums dropping as low as -6°C (22°F). Be prepared for chilly days and pack warm clothing if you're planning to visit during this time.

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

The chart illustrates January temperature patterns in Treorchy, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Treorchy, January typically has an average temperature of 4°C (40°F), with highs reaching up to 13°C (55°F) and lows dropping to around -6°C (22°F).
JanFebMarAprMayJunJulAugSepOctNovDec404143475258615956514543
Data source: Temperature data for Treorchy 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 Treorchy

In Treorchy in January, the precipitation amount is 82 mm (3.2 in) occurring over a span of 12 days.

January Precipitation Trends in Treorchy

The chart displays monthly precipitation patterns in Treorchy, 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 Treorchy, January typically receives around 82 mm (3.2 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec821241116493919311492143117144
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Treorchy

In Treorchy in January, humidity is 88%. With an average temperature of 4°C (40°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration less enjoyable and prompting you to seek cozy indoor activities instead.

January Average Humidity in Treorchy

This chart illustrates the average monthly humidity levels in Treorchy, 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 Treorchy is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%86%84%80%80%70%73%79%89%90%89%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Treorchy

In Treorchy 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 Treorchy.

Maximum UV Index Levels in Treorchy for January

The chart shows the monthly maximum UV Index (UVI) for Treorchy 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 Treorchy typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124678876421
Data source: Treorchy 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 Treorchy Compares to Other Months

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

This table compares monthly weather conditions in Treorchy, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)82 mm (3.2 inches)88%low
February Weather5°C (42°F)124 mm (4.9 inches)88%low
March Weather6°C (43°F)111 mm (4.4 inches)86%moderate
April Weather8°C (47°F)64 mm (2.5 inches)84%high
May Weather11°C (52°F)93 mm (3.7 inches)80%high
June Weather14°C (58°F)91 mm (3.6 inches)80%very high
July Weather16°C (61°F)93 mm (3.7 inches)70%very high
August Weather15°C (60°F)114 mm (4.5 inches)73%high
September Weather13°C (56°F)92 mm (3.6 inches)79%high
October Weather10°C (51°F)143 mm (5.6 inches)89%moderate
November Weather7°C (45°F)117 mm (4.6 inches)90%low
December Weather6°C (43°F)144 mm (5.7 inches)89%low

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