May Weather in Hamilton, United States

Last updated: June 24, 2025

In Hamilton, United States, the average temperature in May is a pleasant 18°C (65°F), with a minimum dipping to 3°C (38°F) and a maximum soaring up to 36°C (97°F). Expect precipitation of about 166 mm (6.6 in) spread over 15 days, and maintain your comfort with an average humidity level of 78%.

May Temperature in Hamilton

In May in Hamilton, the average temperature is 18°C (65°F). Maximum temperatures can reach 36°C (97°F), while minimums can drop as low as 3°C (38°F). It's an ideal time for travelers to enjoy a mix of warm days and cooler nights, so packing accordingly is essential.

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 36°C (97°F) and lows dropping to around 3°C (38°F).

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

May Precipitation in Hamilton

In Hamilton in May, the total precipitation amount is 166 mm (6.6 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 166 mm (6.6 inches) of precipitation spread over approximately 15 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 Hamilton

In Hamilton in May, humidity is 78%. With an average temperature of 18°C (65°F), this humidity feels like a warm, enveloping blanket, making travel quite muggy and potentially uncomfortable, as it can leave you feeling sticky and fatigued more quickly than usual.

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 78%, 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 Hamilton

In Hamilton 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 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 9, which falls under the very high exposure category.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (27°F)	57 mm (2.2 inches)	81%	moderate
February Weather	-2°C (29°F)	60 mm (2.4 inches)	81%	moderate
March Weather	6°C (43°F)	101 mm (4.0 inches)	81%	high
April Weather	11°C (52°F)	97 mm (3.8 inches)	82%	very high
May Weather	18°C (65°F)	166 mm (6.6 inches)	78%	very high
June Weather	24°C (76°F)	121 mm (4.8 inches)	81%	extreme
July Weather	26°C (79°F)	83 mm (3.3 inches)	79%	very high
August Weather	24°C (75°F)	84 mm (3.3 inches)	77%	very high
September Weather	21°C (70°F)	98 mm (3.9 inches)	78%	very high
October Weather	13°C (56°F)	112 mm (4.4 inches)	78%	high
November Weather	5°C (41°F)	52 mm (2.0 inches)	87%	moderate
December Weather	1°C (35°F)	43 mm (1.7 inches)	84%	low