nomadseason

May Weather in Holtsville, United States

Last updated: June 24, 2025

In May, the average temperature in Holtsville, United States is a pleasant 14°C (57°F), with a range that can dip to a minimum of 3°C (38°F) and soar to a comfortable maximum of 25°C (77°F). Expect an average precipitation of 117 mm (4.6 in) spread over 12 days, contributing to a relatively humid atmosphere with an average humidity of 69%.

May Temperature in Holtsville

In May in Holtsville, the average temperature is 14°C (57°F). Maximums can reach 25°C (77°F), while minimums can drop to as low as 3°C (38°F). It's a great time to explore Holtsville, as the mild temperatures make for comfortable travel conditions.

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

The chart illustrates May temperature patterns in Holtsville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Holtsville, May typically has an average temperature of 14°C (57°F), with highs reaching up to 25°C (77°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec363740485767757569614941
Data source: Temperature data for Holtsville generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Holtsville

In Holtsville in May, the total precipitation amount is 117 mm (4.6 in), occurring over a span of 12 days.

May Precipitation Trends in Holtsville

The chart displays monthly precipitation patterns in Holtsville, 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 Holtsville, May typically receives around 117 mm (4.6 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec801081061251177711310191137103134
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

May Humidity in Holtsville

In Holtsville in May, humidity is 69%. With an average temperature of 14°C (57°F), this humidity feels like a mild blanket wrapping around you, making outdoor activities slightly uncomfortable but manageable for traveling, especially if you stay hydrated and take breaks in shaded areas.

May Average Humidity in Holtsville

This chart illustrates the average monthly humidity levels in Holtsville, 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 Holtsville is approximately 69%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%81%78%70%69%62%65%68%74%82%80%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Holtsville

In Holtsville 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 Holtsville.

Maximum UV Index Levels in Holtsville for May

The chart shows the monthly maximum UV Index (UVI) for Holtsville 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 Holtsville typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356810101098642
Data source: Holtsville 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 Holtsville Compares to Other Months

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

This table compares monthly weather conditions in Holtsville, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)80 mm (3.1 inches)84%moderate
February Weather3°C (37°F)108 mm (4.3 inches)82%moderate
March Weather5°C (41°F)106 mm (4.2 inches)81%high
April Weather9°C (49°F)125 mm (4.9 inches)78%very high
May Weather14°C (57°F)117 mm (4.6 inches)69%very high
June Weather20°C (67°F)77 mm (3.0 inches)69%very high
July Weather24°C (75°F)113 mm (4.5 inches)62%very high
August Weather24°C (75°F)101 mm (4.0 inches)65%very high
September Weather21°C (70°F)91 mm (3.6 inches)68%very high
October Weather16°C (62°F)137 mm (5.4 inches)74%high
November Weather10°C (50°F)103 mm (4.1 inches)82%moderate
December Weather5°C (42°F)134 mm (5.3 inches)80%low

Compare Holtsville's Climate with Cities Worldwide