April Weather in Hamilton, United States

Last updated: June 24, 2025

In April, the average temperature in Hamilton, United States hovers around 9°C (48°F). Expect a minimum of -7°C (19°F) and a maximum of 28°C (83°F). Rainfall can be significant, with 102 mm (4.0 in) of precipitation spread over 14 days, contributing to a high average humidity of 87%.

April Temperature in Hamilton

In April in Hamilton, the average temperature is 9°C (48°F), with maximums reaching up to 28°C (83°F) and minimums dropping as low as -7°C (19°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates April 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, April typically has an average temperature of 9°C (48°F), with highs reaching up to 28°C (83°F) and lows dropping to around -7°C (19°F).

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

April Precipitation in Hamilton

In Hamilton in April, the precipitation amount is 102 mm (4.0 in) over a period of 14 days.

April Precipitation Trends in Hamilton

The chart displays monthly precipitation patterns in Hamilton, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Hamilton, April typically receives around 102 mm (4.0 inches) of precipitation spread over approximately 14 days.

Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

April Humidity in Hamilton

In Hamilton in April humidity is 87%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration uncomfortable and requiring extra layers and careful planning for any activities.

April Average Humidity in Hamilton

This chart illustrates the average monthly humidity levels in Hamilton, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Hamilton is approximately 87%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Hamilton

In Hamilton in April, 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 April

The chart shows the monthly maximum UV Index (UVI) for Hamilton in April, 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 April, the maximum UV index in Hamilton typically reaches 9, which falls under the very high exposure category.

Data source: Hamilton April 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 April 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 April’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 April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (27°F)	72 mm (2.8 inches)	85%	moderate
February Weather	-2°C (29°F)	75 mm (2.9 inches)	85%	moderate
March Weather	4°C (39°F)	100 mm (3.9 inches)	86%	high
April Weather	9°C (48°F)	102 mm (4.0 inches)	87%	very high
May Weather	16°C (61°F)	136 mm (5.4 inches)	81%	very high
June Weather	22°C (72°F)	124 mm (4.9 inches)	82%	very high
July Weather	24°C (75°F)	116 mm (4.6 inches)	81%	very high
August Weather	22°C (72°F)	101 mm (4.0 inches)	79%	very high
September Weather	19°C (67°F)	65 mm (2.5 inches)	78%	very high
October Weather	13°C (55°F)	110 mm (4.3 inches)	81%	high
November Weather	4°C (40°F)	81 mm (3.2 inches)	89%	moderate
December Weather	1°C (34°F)	60 mm (2.3 inches)	86%	low