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May Weather in Waterville, United States

Last updated: June 24, 2025

In Waterville, United States, the average temperature in May hovers around 14°C (58°F), making it a pleasant time to explore. Expect a minimum dip to 0°C (32°F) and a warm maximum reaching up to 31°C (87°F). The weather can be a bit drizzly, with 22 mm (0.9 in) of precipitation spread over 5 days. Don't forget your umbrella, as the average humidity sits at a notable 81%, adding to the overall ambiance of this time of year.

May Temperature in Waterville

In May in Waterville, the average temperature is 14°C (58°F). Maximum temperatures can reach 31°C (87°F), while the minimum can dip as low as 0°C (32°F). This varied climate makes Waterville an intriguing destination for travelers, offering both warm days and crisp evenings.

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

The chart illustrates May temperature patterns in Waterville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Waterville, May typically has an average temperature of 14°C (58°F), with highs reaching up to 31°C (87°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec282938465764727161463729
Data source: Temperature data for Waterville 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 Waterville

In Waterville in May, the total precipitation amount is 22 mm (0.9 in) spread over a period of 5 days.

May Precipitation Trends in Waterville

The chart displays monthly precipitation patterns in Waterville, 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 Waterville, May typically receives around 22 mm (0.9 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec766241362292523485770
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Waterville

In Waterville in May, humidity is 81%. With an average temperature of 14°C (58°F), this humidity feels like a warm blanket wrapping around you, making outdoor adventures sticky and challenging, while also providing a lush, vibrant atmosphere perfect for exploring.

May Average Humidity in Waterville

This chart illustrates the average monthly humidity levels in Waterville, 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 Waterville is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%87%84%81%82%79%63%62%83%89%88%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Waterville

In Waterville in May, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Waterville.

Maximum UV Index Levels in Waterville for May

The chart shows the monthly maximum UV Index (UVI) for Waterville 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 Waterville typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2456891097532
Data source: Waterville 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 Waterville Compares to Other Months

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

This table compares monthly weather conditions in Waterville, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)76 mm (3.0 inches)86%low
February Weather-2°C (29°F)62 mm (2.4 inches)86%moderate
March Weather3°C (38°F)41 mm (1.6 inches)87%moderate
April Weather8°C (47°F)36 mm (1.4 inches)84%high
May Weather14°C (58°F)22 mm (0.9 inches)81%very high
June Weather18°C (65°F)9 mm (0.4 inches)82%very high
July Weather22°C (72°F)2 mm (0.1 inches)79%very high
August Weather22°C (71°F)4 mm (0.2 inches)63%very high
September Weather16°C (61°F)23 mm (0.9 inches)62%high
October Weather8°C (47°F)48 mm (1.9 inches)83%moderate
November Weather3°C (37°F)57 mm (2.2 inches)89%moderate
December Weather-2°C (29°F)70 mm (2.8 inches)88%low

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