May Weather in Sussex, Canada

Last updated: June 18, 2025

In May, the average temperature in Sussex, Canada hovers around 10°C (50°F). Expect a chilly minimum of -4°C (25°F), with the possibility of reaching a warm 29°C (85°F). Be prepared for 107 mm (4.2 in) of precipitation over approximately 13 days, contributing to an average humidity level of 78%.

May Temperature in Sussex

In May in Sussex, the average temperature is 10°C (50°F), with maximums reaching 29°C (85°F) and minimums dropping as low as -4°C (25°F). Be prepared for a wide range of weather conditions during your travels to Sussex this month.

May Weather in Sussex: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Sussex, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sussex, May typically has an average temperature of 10°C (50°F), with highs reaching up to 29°C (85°F) and lows dropping to around -4°C (25°F).

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

May Precipitation in Sussex

In Sussex in May, the total precipitation amount is 107 mm (4.2 in) distributed over a span of 13 days.

May Precipitation Trends in Sussex

The chart displays monthly precipitation patterns in Sussex, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Sussex, May typically receives around 107 mm (4.2 inches) of precipitation spread over approximately 13 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Sussex

In Sussex in May humidity is 78%. With an average temperature of 10°C (50°F), this humidity feels like a chilly dampness that can seep into your clothes, making outdoor activities less enjoyable and requiring extra layers to stay warm as you explore the area.

May Average Humidity in Sussex

This chart illustrates the average monthly humidity levels in Sussex, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Sussex is approximately 78%, offering insight into how humid the weather typically is during this month.

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

May UV Index in Sussex

In Sussex in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Sussex.

Maximum UV Index Levels in Sussex for May

The chart shows the monthly maximum UV Index (UVI) for Sussex in May, 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 May, the maximum UV index in Sussex typically reaches 9, which falls under the very high exposure category.

Data source: Sussex May 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 May Weather in Sussex Compares to Other Months

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

This table compares monthly weather conditions in Sussex, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (20°F)	101 mm (4.0 inches)	83%	low
February Weather	-6°C (21°F)	104 mm (4.1 inches)	84%	moderate
March Weather	-2°C (28°F)	80 mm (3.2 inches)	82%	moderate
April Weather	4°C (40°F)	105 mm (4.1 inches)	80%	high
May Weather	10°C (50°F)	107 mm (4.2 inches)	78%	very high
June Weather	15°C (60°F)	99 mm (3.9 inches)	82%	very high
July Weather	19°C (66°F)	87 mm (3.4 inches)	84%	very high
August Weather	19°C (66°F)	81 mm (3.2 inches)	82%	very high
September Weather	15°C (58°F)	91 mm (3.6 inches)	82%	high
October Weather	9°C (48°F)	93 mm (3.7 inches)	82%	moderate
November Weather	2°C (36°F)	160 mm (6.3 inches)	84%	moderate
December Weather	-4°C (25°F)	114 mm (4.5 inches)	82%	low