May Weather in Lewes, United States

Last updated: June 24, 2025

In Lewes, United States, the average temperature in May hovers around 18°C (64°F), with a range between a chilly 5°C (41°F) and a warm 31°C (88°F). This month sees about 131 mm (5.2 in) of precipitation spread over 12 days, contributing to an average humidity level of 78%. Stay prepared for a mix of weather as you enjoy all that Lewes has to offer!

May Temperature in Lewes

In May in Lewes, the average temperature is 18°C (64°F). Maximums can reach 31°C (88°F), while minimums can dip as low as 5°C (41°F). Be prepared for a range of temperatures if you're planning to travel during this time.

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

The chart illustrates May temperature patterns in Lewes, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lewes, May typically has an average temperature of 18°C (64°F), with highs reaching up to 31°C (88°F) and lows dropping to around 5°C (41°F).

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

May Precipitation in Lewes

In Lewes in May, the precipitation amount is 131 mm (5.2 in) spread over 12 days.

May Precipitation Trends in Lewes

The chart displays monthly precipitation patterns in Lewes, 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 Lewes, May typically receives around 131 mm (5.2 inches) of precipitation spread over approximately 12 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 Lewes

In Lewes in May, humidity is 78%. With an average temperature of 18°C (64°F), this humidity feels like a warm, thick blanket wrapping around you, making traveling feel a bit sticky and sluggish, yet the coolness of the air tempers the intensity, inviting you to explore at a leisurely pace.

May Average Humidity in Lewes

This chart illustrates the average monthly humidity levels in Lewes, 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 Lewes 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 Lewes

In Lewes in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Lewes.

Maximum UV Index Levels in Lewes for May

The chart shows the monthly maximum UV Index (UVI) for Lewes 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 Lewes typically reaches 10, which falls under the very high exposure category.

Data source: Lewes 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 Lewes Compares to Other Months

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

This table compares monthly weather conditions in Lewes, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (39°F)	70 mm (2.8 inches)	84%	moderate
February Weather	5°C (42°F)	107 mm (4.2 inches)	83%	moderate
March Weather	8°C (46°F)	107 mm (4.2 inches)	83%	high
April Weather	13°C (55°F)	89 mm (3.5 inches)	81%	very high
May Weather	18°C (64°F)	131 mm (5.2 inches)	78%	very high
June Weather	23°C (74°F)	98 mm (3.9 inches)	79%	very high
July Weather	26°C (80°F)	141 mm (5.5 inches)	74%	very high
August Weather	25°C (78°F)	141 mm (5.6 inches)	72%	very high
September Weather	23°C (73°F)	104 mm (4.1 inches)	75%	very high
October Weather	18°C (64°F)	135 mm (5.3 inches)	81%	high
November Weather	10°C (51°F)	89 mm (3.5 inches)	85%	moderate
December Weather	6°C (44°F)	109 mm (4.3 inches)	84%	moderate