May Weather in Dover, United States

Last updated: June 24, 2025

In Dover, United States, the average temperature in May hovers around 14°C (57°F). Expect a chilly minimum of 2°C (35°F) and a warm maximum reaching up to 34°C (93°F). During this month, precipitation totals about 74 mm (2.9 in), spread across roughly 10 days, with an average humidity level of 72%.

May Temperature in Dover

In May in Dover, the average temperature is 14°C (57°F). Maximum temperatures can reach as high as 34°C (93°F), while minimum temperatures can drop to a chilly 2°C (35°F). It's advisable to pack layers to prepare for both warm and cool conditions while exploring.

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

The chart illustrates May temperature patterns in Dover, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dover, May typically has an average temperature of 14°C (57°F), with highs reaching up to 34°C (93°F) and lows dropping to around 2°C (35°F).

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

May Precipitation in Dover

In Dover in May, the precipitation amount is 74 mm (2.9 in) spread over a period of 10 days.

May Precipitation Trends in Dover

The chart displays monthly precipitation patterns in Dover, 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 Dover, May typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 10 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 Dover

In Dover in May humidity is 72%. With an average temperature of 14°C (57°F), this humidity feels like a damp embrace, making outdoor activities slightly uncomfortable and requiring careful planning to stay hydrated and enjoy your travels.

May Average Humidity in Dover

This chart illustrates the average monthly humidity levels in Dover, 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 Dover is approximately 72%, 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 Dover

In Dover 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 Dover.

Maximum UV Index Levels in Dover for May

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

Data source: Dover 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 Dover Compares to Other Months

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

This table compares monthly weather conditions in Dover, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (28°F)	77 mm (3.0 inches)	86%	low
February Weather	-1°C (30°F)	93 mm (3.7 inches)	84%	moderate
March Weather	2°C (36°F)	85 mm (3.4 inches)	82%	moderate
April Weather	8°C (46°F)	131 mm (5.1 inches)	80%	high
May Weather	14°C (57°F)	74 mm (2.9 inches)	72%	very high
June Weather	19°C (67°F)	84 mm (3.3 inches)	72%	very high
July Weather	22°C (72°F)	131 mm (5.2 inches)	67%	very high
August Weather	22°C (72°F)	77 mm (3.0 inches)	66%	very high
September Weather	18°C (65°F)	75 mm (2.9 inches)	71%	high
October Weather	12°C (54°F)	132 mm (5.2 inches)	78%	moderate
November Weather	5°C (41°F)	107 mm (4.2 inches)	84%	moderate
December Weather	0°C (32°F)	130 mm (5.1 inches)	81%	low