May Weather in Sandown, United States

Last updated: June 24, 2025

In Sandown, United States, the average temperature in May hovers around 15°C (58°F), offering a comfortable climate. However, temperatures can swing from a chilly 1°C (34°F) to a sizzling 34°C (94°F). Expect about 77 mm (3.0 in) of precipitation spread across 10 days, alongside an average humidity of 72%—perfect for cozy indoor days or refreshing outdoor adventures!

May Temperature in Sandown

In May in Sandown, the average temperature is 15°C (58°F). The maximum can reach 34°C (94°F) and the minimum can be as low as 1°C (34°F). Be sure to pack accordingly for varying weather conditions while enjoying your travels!

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

The chart illustrates May temperature patterns in Sandown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sandown, May typically has an average temperature of 15°C (58°F), with highs reaching up to 34°C (94°F) and lows dropping to around 1°C (34°F).

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

May Precipitation in Sandown

In Sandown in May, the total precipitation amount is 77 mm (3.0 in) spread over a duration of 10 days.

May Precipitation Trends in Sandown

The chart displays monthly precipitation patterns in Sandown, 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 Sandown, May typically receives around 77 mm (3.0 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 Sandown

In Sandown in May, humidity is 72%. With an average temperature of 15°C (58°F), this humidity feels like a damp blanket wrapping around you, making outdoor activities less comfortable and encouraging travelers to seek out shaded areas or cool indoor spaces.

May Average Humidity in Sandown

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

In Sandown 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 Sandown.

Maximum UV Index Levels in Sandown for May

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

Data source: Sandown 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 Sandown Compares to Other Months

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

This table compares monthly weather conditions in Sandown, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (28°F)	70 mm (2.7 inches)	86%	moderate
February Weather	-1°C (30°F)	84 mm (3.3 inches)	84%	moderate
March Weather	2°C (36°F)	82 mm (3.2 inches)	82%	moderate
April Weather	8°C (47°F)	128 mm (5.0 inches)	80%	very high
May Weather	15°C (58°F)	77 mm (3.0 inches)	72%	very high
June Weather	20°C (69°F)	89 mm (3.5 inches)	72%	very high
July Weather	23°C (74°F)	135 mm (5.3 inches)	67%	very high
August Weather	23°C (73°F)	75 mm (2.9 inches)	66%	very high
September Weather	19°C (66°F)	72 mm (2.8 inches)	71%	high
October Weather	12°C (54°F)	125 mm (4.9 inches)	78%	moderate
November Weather	4°C (40°F)	99 mm (3.9 inches)	84%	moderate
December Weather	-1°C (31°F)	122 mm (4.8 inches)	81%	low