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April Weather in Hamilton, United States

Last updated: June 24, 2025

In April, the average temperature in Hamilton, United States is a mild 12°C (53°F). However, be prepared for temperature swings, as it can drop to a chilly -4°C (25°F) or rise to a warm 29°C (85°F). Expect a moderate amount of precipitation, averaging 109 mm (4.3 in) over 12 days, and a high average humidity of 85%.

April Temperature in Hamilton

In April in Hamilton, the average temperature is 12°C (53°F). Maximums can reach 29°C (85°F), while minimums can dip as low as -4°C (25°F). Be prepared for a range of temperatures when traveling during this month, as you may experience both warm and chilly conditions.

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 12°C (53°F), with highs reaching up to 29°C (85°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec323544536573777470584337
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.

April Precipitation in Hamilton

In Hamilton in April, the total precipitation amount is 109 mm (4.3 in) during a span of 12 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 109 mm (4.3 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec81108130109130137117948110098103
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Hamilton

In Hamilton in April, humidity is 85%. With an average temperature of 12°C (53°F), this humidity feels like a damp embrace, making travel somewhat uncomfortable as you navigate the thick, moist air that clings to your skin.

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 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%87%85%81%82%81%73%73%78%89%87%
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.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098643
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.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)81 mm (3.2 inches)88%moderate
February Weather2°C (36°F)108 mm (4.2 inches)88%moderate
March Weather7°C (44°F)130 mm (5.1 inches)87%high
April Weather12°C (53°F)109 mm (4.3 inches)85%very high
May Weather18°C (65°F)130 mm (5.1 inches)81%very high
June Weather23°C (73°F)137 mm (5.4 inches)82%very high
July Weather25°C (77°F)117 mm (4.6 inches)81%very high
August Weather24°C (75°F)94 mm (3.7 inches)73%very high
September Weather21°C (70°F)81 mm (3.2 inches)73%very high
October Weather15°C (59°F)100 mm (3.9 inches)78%high
November Weather6°C (43°F)98 mm (3.9 inches)89%moderate
December Weather3°C (38°F)103 mm (4.0 inches)87%moderate

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