January Weather in Ystradgynlais, United Kingdom

Last updated: August 27, 2025

In January, the average temperature in Ystradgynlais, United Kingdom hovers around 5°C (41°F). However, be prepared for a chill, as it can dip to a brisk -6°C (22°F) and occasionally rise to a mild 13°C (55°F). Expect some rain with a precipitation amount of 100 mm (4.0 in) spread over 12 days, while the air remains notably damp with an average humidity of 88%.

January Temperature in Ystradgynlais

In January in Ystradgynlais, the average temperature is 5°C (41°F), with a maximum that can reach 13°C (55°F) and a minimum that can drop to -6°C (22°F). Travelers should pack accordingly to stay warm while enjoying the crisp winter atmosphere.

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

The chart illustrates January temperature patterns in Ystradgynlais, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ystradgynlais, January typically has an average temperature of 5°C (41°F), with highs reaching up to 13°C (55°F) and lows dropping to around -6°C (22°F).

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

January Precipitation in Ystradgynlais

In Ystradgynlais in January, the precipitation amount is 100 mm (4.0 in) spread over a period of 12 days.

January Precipitation Trends in Ystradgynlais

The chart displays monthly precipitation patterns in Ystradgynlais, 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 Ystradgynlais, January typically receives around 100 mm (4.0 inches) of precipitation spread over approximately 12 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 Ystradgynlais

In Ystradgynlais in January humidity is 88%. With an average temperature of 5°C (41°F), this humidity feels like a damp chill that seeps into your bones, making it essential to bundle up for your travels, as every breath feels heavy in the air and the landscape appears cloaked in a misty shroud.

January Average Humidity in Ystradgynlais

This chart illustrates the average monthly humidity levels in Ystradgynlais, 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 Ystradgynlais is approximately 88%, 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 Ystradgynlais

In Ystradgynlais 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 Ystradgynlais.

Maximum UV Index Levels in Ystradgynlais for January

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

Data source: Ystradgynlais 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 Ystradgynlais Compares to Other Months

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

This table compares monthly weather conditions in Ystradgynlais, 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)	100 mm (4.0 inches)	88%	low
February Weather	5°C (42°F)	153 mm (6.0 inches)	88%	low
March Weather	6°C (44°F)	129 mm (5.1 inches)	86%	moderate
April Weather	9°C (48°F)	68 mm (2.7 inches)	84%	high
May Weather	11°C (53°F)	107 mm (4.2 inches)	80%	high
June Weather	15°C (58°F)	103 mm (4.1 inches)	80%	very high
July Weather	16°C (61°F)	107 mm (4.2 inches)	70%	very high
August Weather	15°C (60°F)	139 mm (5.5 inches)	73%	high
September Weather	13°C (56°F)	110 mm (4.3 inches)	79%	high
October Weather	11°C (51°F)	168 mm (6.6 inches)	89%	moderate
November Weather	7°C (46°F)	135 mm (5.3 inches)	90%	low
December Weather	6°C (43°F)	170 mm (6.7 inches)	89%	low