December Weather in Crawley, United Kingdom

Last updated: August 27, 2025

In Crawley, United Kingdom, the average temperature in December hovers around 7°C (45°F). However, temperatures can drop to a chilly -3°C (26°F) and may climb to a mild 14°C (58°F). Expect 97 mm (3.8 in) of precipitation over approximately 15 days, accompanied by a high average humidity of 92%.

December Temperature in Crawley

In December in Crawley, the average temperature is 7°C (45°F). Maximums can reach 14°C (58°F), while minimums can dip as low as -3°C (26°F). Be prepared for a mix of mild and chilly weather if you're planning to travel during this time.

December Weather in Crawley: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Crawley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Crawley, December typically has an average temperature of 7°C (45°F), with highs reaching up to 14°C (58°F) and lows dropping to around -3°C (26°F).

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

December Precipitation in Crawley

In Crawley in December, the total precipitation amount is 97 mm (3.8 in) spread over 15 days.

December Precipitation Trends in Crawley

The chart displays monthly precipitation patterns in Crawley, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Crawley, December typically receives around 97 mm (3.8 inches) of precipitation spread over approximately 15 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Crawley

In Crawley in December, humidity is 92%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities feel heavier and less enjoyable for traveling.

December Average Humidity in Crawley

This chart illustrates the average monthly humidity levels in Crawley, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Crawley is approximately 92%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Crawley

In Crawley in December, 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 Crawley.

Maximum UV Index Levels in Crawley for December

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

Data source: Crawley December 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 December Weather in Crawley Compares to Other Months

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

This table compares monthly weather conditions in Crawley, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (42°F)	54 mm (2.1 inches)	91%	low
February Weather	6°C (44°F)	57 mm (2.2 inches)	89%	low
March Weather	8°C (46°F)	57 mm (2.2 inches)	86%	moderate
April Weather	10°C (49°F)	34 mm (1.3 inches)	85%	high
May Weather	13°C (55°F)	62 mm (2.4 inches)	79%	high
June Weather	16°C (61°F)	71 mm (2.8 inches)	80%	very high
July Weather	18°C (65°F)	57 mm (2.2 inches)	71%	very high
August Weather	17°C (64°F)	67 mm (2.6 inches)	76%	high
September Weather	15°C (60°F)	50 mm (2.0 inches)	82%	high
October Weather	12°C (54°F)	91 mm (3.6 inches)	90%	moderate
November Weather	8°C (47°F)	65 mm (2.6 inches)	92%	low
December Weather	7°C (45°F)	97 mm (3.8 inches)	92%	low