nomadseason

December Weather in Hamilton, United States

Last updated: June 24, 2025

In December, the average temperature in Hamilton, United States hovers around 11°C (53°F), with a notable range where the minimum can dip to -5°C (24°F), while the maximum can soar to 31°C (88°F). Expect 42 mm (1.6 in) of precipitation spread over approximately 5 days, and prepare for a humid atmosphere with an average humidity of 87%.

December Temperature in Hamilton

In December in Hamilton, the average temperature is 11°C (53°F), with maximums reaching 31°C (88°F) and minimums dropping as low as -5°C (24°F). This diverse temperature range means travelers should be prepared for both warm days and chilly nights.

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

The chart illustrates December 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, December typically has an average temperature of 11°C (53°F), with highs reaching up to 31°C (88°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec485061667481858579685752
Data source: Temperature data for Hamilton generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Hamilton

In Hamilton in December, the precipitation amount is 42 mm (1.6 in) over a period of 5 days.

December Precipitation Trends in Hamilton

The chart displays monthly precipitation patterns in Hamilton, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Hamilton, December typically receives around 42 mm (1.6 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec46758079144764480701194242
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Hamilton

In Hamilton in December, humidity is 87%. With an average temperature of 11°C (53°F), this humidity feels like a damp chill that clings to your skin, making it uncomfortable for traveling as it combines the cool air with a sense of heaviness, leaving you yearning for warmth and dryness.

December Average Humidity in Hamilton

This chart illustrates the average monthly humidity levels in Hamilton, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Hamilton is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%78%77%78%82%78%69%63%66%73%84%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Hamilton

In Hamilton in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Hamilton for better planning.

Maximum UV Index Levels in Hamilton for December

The chart shows the monthly maximum UV Index (UVI) for Hamilton in December, 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 December, the maximum UV index in Hamilton typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec478101112121110864
Data source: Hamilton December 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 December 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 December’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 December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (48°F)46 mm (1.8 inches)78%moderate
February Weather10°C (50°F)75 mm (2.9 inches)78%high
March Weather16°C (61°F)80 mm (3.1 inches)77%very high
April Weather19°C (66°F)79 mm (3.1 inches)78%very high
May Weather24°C (75°F)144 mm (5.7 inches)82%extreme
June Weather27°C (82°F)76 mm (3.0 inches)78%extreme
July Weather30°C (86°F)44 mm (1.7 inches)69%extreme
August Weather29°C (85°F)80 mm (3.2 inches)63%extreme
September Weather26°C (79°F)70 mm (2.8 inches)66%very high
October Weather20°C (68°F)119 mm (4.7 inches)73%very high
November Weather14°C (58°F)42 mm (1.7 inches)84%high
December Weather11°C (53°F)42 mm (1.6 inches)87%moderate

Compare Hamilton's Climate with Cities Worldwide