May Weather in Cohasset, United States

Last updated: June 24, 2025

In May, the average temperature in Cohasset, United States is a comfortable 12°C (54°F), with a minimum dipping to 4°C (39°F) and a pleasant maximum reaching 23°C (73°F). Expect a little wet weather, as precipitation averages 110 mm (4.3 in) spread over 12 days. Humidity hovers around a moderate 72%, adding to the overall atmosphere of this charming locale.

May Temperature in Cohasset

In May in Cohasset, the average temperature is 12°C (54°F), with maximums reaching 23°C (73°F) and minimums dropping as low as 4°C (39°F). This mild climate makes Cohasset an ideal destination for travelers looking to enjoy comfortable outdoor activities.

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

The chart illustrates May temperature patterns in Cohasset, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cohasset, May typically has an average temperature of 12°C (54°F), with highs reaching up to 23°C (73°F) and lows dropping to around 4°C (39°F).

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

May Precipitation in Cohasset

In Cohasset in May, the precipitation amount is 110 mm (4.3 in) over a span of 12 days.

May Precipitation Trends in Cohasset

The chart displays monthly precipitation patterns in Cohasset, 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 Cohasset, May typically receives around 110 mm (4.3 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 Cohasset

In Cohasset in May, humidity is 72%. With an average temperature of 12°C (54°F), this humidity feels like a damp chill that wraps around you, making outdoor excursions a bit uncomfortable. You may find yourself reaching for an extra layer as the moisture in the air adds to the coolness, prompting travelers to seek out sheltered spots to enjoy the scenery.

May Average Humidity in Cohasset

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

In Cohasset 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 Cohasset.

Maximum UV Index Levels in Cohasset for May

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

Data source: Cohasset 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 Cohasset Compares to Other Months

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

This table compares monthly weather conditions in Cohasset, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (34°F)	97 mm (3.8 inches)	86%	low
February Weather	2°C (35°F)	122 mm (4.8 inches)	84%	moderate
March Weather	3°C (38°F)	118 mm (4.7 inches)	82%	moderate
April Weather	7°C (45°F)	159 mm (6.3 inches)	80%	very high
May Weather	12°C (54°F)	110 mm (4.3 inches)	72%	very high
June Weather	17°C (63°F)	94 mm (3.7 inches)	72%	very high
July Weather	21°C (70°F)	104 mm (4.1 inches)	67%	very high
August Weather	21°C (71°F)	66 mm (2.6 inches)	66%	very high
September Weather	19°C (66°F)	107 mm (4.2 inches)	71%	high
October Weather	14°C (58°F)	182 mm (7.2 inches)	78%	high
November Weather	8°C (46°F)	115 mm (4.5 inches)	84%	moderate
December Weather	3°C (38°F)	147 mm (5.8 inches)	81%	low