July Weather in Guernsey, United States

Last updated: June 24, 2025

In Guernsey, United States, the average temperature in July is a warm 25°C (77°F), but be prepared for a range, as it can drop to a cool 8°C (46°F) or soar to a blistering 40°C (103°F). Expect a modest precipitation of 27 mm (1.1 in) spread over about 6 days, with an average humidity level of 85% that adds to the tropical feel of this vibrant locale.

July Temperature in Guernsey

In July in Guernsey, the average temperature is 25°C (77°F). Maximums can reach 40°C (103°F), and minimums can be as low as 8°C (46°F). Therefore, travelers should prepare for a wide range of temperatures and pack accordingly.

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

The chart illustrates July temperature patterns in Guernsey, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Guernsey, July typically has an average temperature of 25°C (77°F), with highs reaching up to 40°C (103°F) and lows dropping to around 8°C (46°F).

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

July Precipitation in Guernsey

In Guernsey in July, the precipitation amount is 27 mm (1.1 in) over a period of 6 days.

July Precipitation Trends in Guernsey

The chart displays monthly precipitation patterns in Guernsey, 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 Guernsey, July typically receives around 27 mm (1.1 inches) of precipitation spread over approximately 6 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

July Humidity in Guernsey

In Guernsey in July, humidity is 85%. With an average temperature of 25°C (77°F), this humidity feels like a warm, heavy blanket wrapping around you, making every outdoor excursion feel both stifling and sticky, requiring frequent breaks in the shade to stay comfortable while exploring.

July Average Humidity in Guernsey

This chart illustrates the average monthly humidity levels in Guernsey, 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 Guernsey is approximately 85%, 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 Guernsey

In Guernsey in July, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Guernsey.

Maximum UV Index Levels in Guernsey for July

The chart shows the monthly maximum UV Index (UVI) for Guernsey 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 Guernsey typically reaches 11, which falls under the extreme exposure category.

Data source: Guernsey 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 Guernsey Compares to Other Months

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

This table compares monthly weather conditions in Guernsey, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (31°F)	12 mm (0.5 inches)	73%	moderate
February Weather	-2°C (29°F)	23 mm (0.9 inches)	78%	moderate
March Weather	4°C (39°F)	50 mm (2.0 inches)	64%	high
April Weather	8°C (46°F)	45 mm (1.8 inches)	66%	very high
May Weather	13°C (55°F)	85 mm (3.3 inches)	74%	very high
June Weather	21°C (70°F)	37 mm (1.5 inches)	84%	extreme
July Weather	25°C (77°F)	27 mm (1.1 inches)	85%	extreme
August Weather	23°C (74°F)	16 mm (0.6 inches)	85%	very high
September Weather	19°C (66°F)	24 mm (0.9 inches)	76%	very high
October Weather	8°C (47°F)	33 mm (1.3 inches)	71%	high
November Weather	4°C (40°F)	17 mm (0.7 inches)	73%	moderate
December Weather	1°C (33°F)	17 mm (0.7 inches)	75%	moderate