May Weather in Westport, United States

Last updated: June 24, 2025

In Westport, United States, the average temperature in May hovers around 18°C (65°F), making it a comfortable time to explore. However, be prepared for temperature fluctuations, as the minimum can dip to -2°C (29°F) while the maximum can soar to 33°C (91°F). Expect approximately 131 mm (5.2 in) of precipitation spread over 14 days, with an average humidity level of 79%. Dress accordingly and enjoy your stay!

May Temperature in Westport

In May in Westport, the average temperature is a comfortable 18°C (65°F). However, temperatures can vary significantly, with maximums reaching up to 33°C (91°F) and minimums dropping as low as -2°C (29°F). Travelers should be prepared for a wide range of weather conditions during this time.

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

The chart illustrates May temperature patterns in Westport, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Westport, May typically has an average temperature of 18°C (65°F), with highs reaching up to 33°C (91°F) and lows dropping to around -2°C (29°F).

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

May Precipitation in Westport

In Westport in May, the precipitation amount is 131 mm (5.2 in) spread over the course of 14 days.

May Precipitation Trends in Westport

The chart displays monthly precipitation patterns in Westport, 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 Westport, May typically receives around 131 mm (5.2 inches) of precipitation spread over approximately 14 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 Westport

In Westport in May, humidity is 79%. With an average temperature of 18°C (65°F), this humidity feels like walking through a warm mist, making traveling slightly uncomfortable and sticky, but offering a refreshing escape when you find moments of shade or a breeze.

May Average Humidity in Westport

This chart illustrates the average monthly humidity levels in Westport, 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 Westport is approximately 79%, 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 Westport

In Westport 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 Westport.

Maximum UV Index Levels in Westport for May

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

Data source: Westport 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 Westport Compares to Other Months

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

This table compares monthly weather conditions in Westport, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	86 mm (3.4 inches)	87%	moderate
February Weather	2°C (36°F)	116 mm (4.6 inches)	85%	moderate
March Weather	7°C (44°F)	140 mm (5.5 inches)	86%	high
April Weather	12°C (53°F)	122 mm (4.8 inches)	84%	very high
May Weather	18°C (65°F)	131 mm (5.2 inches)	79%	very high
June Weather	23°C (73°F)	128 mm (5.0 inches)	82%	extreme
July Weather	25°C (77°F)	109 mm (4.3 inches)	79%	very high
August Weather	23°C (74°F)	93 mm (3.7 inches)	70%	very high
September Weather	21°C (70°F)	83 mm (3.3 inches)	69%	very high
October Weather	15°C (59°F)	99 mm (3.9 inches)	76%	high
November Weather	6°C (43°F)	104 mm (4.1 inches)	88%	moderate
December Weather	3°C (38°F)	106 mm (4.2 inches)	87%	moderate