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May Weather in Hamilton, United States

Last updated: June 24, 2025

In May, the average temperature in Hamilton, United States hovers around 18°C (65°F), with extremes ranging from a chilly 3°C (38°F) to a sweltering 35°C (95°F). During this month, expect about 200 mm (7.9 in) of precipitation spread over 15 days, contributing to an average humidity level of 82%. Whether you're enjoying the heat or dodging the rain, Hamilton offers a unique climate experience!

May Temperature in Hamilton

In May in Hamilton, the average temperature is 18°C (65°F). Maximums can reach 35°C (95°F), while minimums can drop to as low as 3°C (38°F). This variation in temperature makes it essential for travelers to pack both light and warm clothing to ensure comfort during their visit.

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

The chart illustrates May temperature patterns in Hamilton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hamilton, May typically has an average temperature of 18°C (65°F), with highs reaching up to 35°C (95°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec283145536576797671564236
Data source: Temperature data for Hamilton 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 Hamilton

In Hamilton in May, the precipitation amount is 200 mm (7.9 in) over the course of 15 days.

May Precipitation Trends in Hamilton

The chart displays monthly precipitation patterns in Hamilton, 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 Hamilton, May typically receives around 200 mm (7.9 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec5440988420013311098931345033
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Hamilton

In Hamilton in May, humidity is 82%. With an average temperature of 18°C (65°F), this humidity feels like a warm, sticky embrace that can quickly leave travelers feeling fatigued and in need of frequent breaks to stay refreshed and hydrated.

May Average Humidity in Hamilton

This chart illustrates the average monthly humidity levels in Hamilton, 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 Hamilton is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%78%75%77%82%83%81%78%72%72%84%86%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Hamilton

In Hamilton 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 Hamilton.

Maximum UV Index Levels in Hamilton for May

The chart shows the monthly maximum UV Index (UVI) for Hamilton 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 Hamilton typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3569101111109643
Data source: Hamilton 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 Hamilton Compares to Other Months

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

This table compares monthly weather conditions in Hamilton, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)54 mm (2.1 inches)80%moderate
February Weather-1°C (31°F)40 mm (1.6 inches)78%moderate
March Weather7°C (45°F)98 mm (3.8 inches)75%high
April Weather12°C (53°F)84 mm (3.3 inches)77%very high
May Weather18°C (65°F)200 mm (7.9 inches)82%very high
June Weather25°C (76°F)133 mm (5.2 inches)83%extreme
July Weather26°C (79°F)110 mm (4.3 inches)81%extreme
August Weather24°C (76°F)98 mm (3.9 inches)78%very high
September Weather21°C (71°F)93 mm (3.6 inches)72%very high
October Weather13°C (56°F)134 mm (5.3 inches)72%high
November Weather6°C (43°F)50 mm (2.0 inches)84%moderate
December Weather2°C (36°F)33 mm (1.3 inches)86%moderate

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