July Weather in Watford, United Kingdom

Last updated: August 27, 2025

In July, the average temperature in Watford, United Kingdom is a pleasant 18°C (65°F). Visitors can expect a range of temperatures, with a minimum of 8°C (47°F) and a maximum soaring up to 36°C (97°F). Rainfall is moderate, with 67 mm (2.6 in) expected over approximately 13 days. Additionally, the average humidity sits around 71%, adding a touch of freshness to the air.

July Temperature in Watford

In July in Watford, the average temperature is 18°C (65°F). The maximum can reach 36°C (97°F) and the minimum can be as low as 8°C (47°F). This makes Watford an ideal destination for travelers seeking a blend of warm days and cooler evenings.

July Weather in Watford: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Watford, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Watford, July typically has an average temperature of 18°C (65°F), with highs reaching up to 36°C (97°F) and lows dropping to around 8°C (47°F).

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

July Precipitation in Watford

In Watford in July, the precipitation amount is 67 mm (2.6 in) spread over 13 days.

July Precipitation Trends in Watford

The chart displays monthly precipitation patterns in Watford, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Watford, July typically receives around 67 mm (2.6 inches) of precipitation spread over approximately 13 days.

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

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Millimeters (mm) Inches (in)

July Humidity in Watford

In Watford in July humidity is 71%. With an average temperature of 18°C (65°F), this humidity feels like a warm embrace, making it a bit sticky and muggy, which can be slightly uncomfortable for traveling, especially if you're engaging in outdoor activities or exploring the city on foot.

July Average Humidity in Watford

This chart illustrates the average monthly humidity levels in Watford, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Watford is approximately 71%, offering insight into how humid the weather typically is during this month.

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

July UV Index in Watford

In Watford in July, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Watford.

Maximum UV Index Levels in Watford for July

The chart shows the monthly maximum UV Index (UVI) for Watford in July, 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 July, the maximum UV index in Watford typically reaches 8, which falls under the very high exposure category.

Data source: Watford July 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 July Weather in Watford Compares to Other Months

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

This table compares monthly weather conditions in Watford, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (41°F)	56 mm (2.2 inches)	91%	low
February Weather	6°C (43°F)	52 mm (2.0 inches)	89%	low
March Weather	7°C (45°F)	57 mm (2.2 inches)	86%	moderate
April Weather	9°C (49°F)	34 mm (1.3 inches)	85%	moderate
May Weather	13°C (55°F)	66 mm (2.6 inches)	79%	high
June Weather	16°C (61°F)	74 mm (2.9 inches)	80%	very high
July Weather	18°C (65°F)	67 mm (2.6 inches)	71%	very high
August Weather	17°C (64°F)	71 mm (2.8 inches)	76%	high
September Weather	15°C (59°F)	51 mm (2.0 inches)	82%	high
October Weather	11°C (53°F)	91 mm (3.6 inches)	90%	moderate
November Weather	8°C (46°F)	54 mm (2.1 inches)	92%	low
December Weather	6°C (43°F)	83 mm (3.3 inches)	92%	low