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May Weather in Water Mill, United States

Last updated: June 24, 2025

In May, the average temperature in Water Mill, United States is a mild 12°C (54°F), with lows dipping to 4°C (39°F) and highs reaching up to 20°C (69°F). Expect approximately 129 mm (5.1 in) of precipitation spread across 13 days, contributing to an average humidity of 75%. Stay prepared for a mix of cozy days and refreshing rain!

May Temperature in Water Mill

In May in Water Mill, the average temperature is 12°C (54°F). Maximums can reach 20°C (69°F) and minimums can be as low as 4°C (39°F). This mild weather makes it an ideal time for traveling, allowing visitors to explore comfortably while enjoying the sights.

May Weather in Water Mill: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Water Mill, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Water Mill, May typically has an average temperature of 12°C (54°F), with highs reaching up to 20°C (69°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec363739465464727368615042
Data source: Temperature data for Water Mill generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Water Mill

In Water Mill in May, the precipitation amount is 129 mm (5.1 in) over the course of 13 days.

May Precipitation Trends in Water Mill

The chart displays monthly precipitation patterns in Water Mill, 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 Water Mill, May typically receives around 129 mm (5.1 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec89123113137129729910399161113147
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Water Mill

In Water Mill in May, humidity is 75%. With an average temperature of 12°C (54°F), this humidity feels like a damp chill that seeps into your bones, making it essential to layer your clothing for comfort while exploring.

May Average Humidity in Water Mill

This chart illustrates the average monthly humidity levels in Water Mill, 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 Water Mill is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%84%82%79%75%78%76%76%76%75%80%80%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Water Mill

In Water Mill 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 Water Mill.

Maximum UV Index Levels in Water Mill for May

The chart shows the monthly maximum UV Index (UVI) for Water Mill 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 Water Mill typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35689101098642
Data source: Water Mill 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 Water Mill Compares to Other Months

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

This table compares monthly weather conditions in Water Mill, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (37°F)89 mm (3.5 inches)84%moderate
February Weather3°C (37°F)123 mm (4.8 inches)84%moderate
March Weather4°C (39°F)113 mm (4.5 inches)82%high
April Weather8°C (47°F)137 mm (5.4 inches)79%very high
May Weather12°C (54°F)129 mm (5.1 inches)75%very high
June Weather18°C (64°F)72 mm (2.9 inches)78%very high
July Weather22°C (72°F)99 mm (3.9 inches)76%very high
August Weather23°C (73°F)103 mm (4.0 inches)76%very high
September Weather20°C (69°F)99 mm (3.9 inches)75%very high
October Weather16°C (61°F)160 mm (6.3 inches)75%high
November Weather10°C (50°F)113 mm (4.4 inches)80%moderate
December Weather5°C (42°F)147 mm (5.8 inches)80%low

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