Hamilton
Canada
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Hamilton, Canada

A bird
A bird's eye view of the Central Business District of Hamilton City in Canada, a view of the road network, and intense cloudy sky seen
December, the first month of the winter, in Hamilton, is also a wintry month, with average temperature ranging between max 2°C (35.6°F) and min -4.7°C (23.5°F).

Temperature

In December, the average high-temperature decreases, from a chilly 7.7°C (45.9°F) in November, to a cold 2°C (35.6°F). The average low-temperature, is -4.7°C (23.5°F).

Rainfall

In December, the rain falls for 7.6 days. Throughout December, 46.8mm (1.8") of precipitation is accumulated. In Hamilton, Canada, during the entire year, the rain falls for 121.1 days and collects up to 780.3mm (30.7") of precipitation.

Snowfall

Months with snowfall in Hamilton are January through April, November and December.

Sea temperature

In December, the average sea temperature is 4.8°C (40.6°F).
Note: For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

Daylight

The month with the shortest days in Hamilton is December, with an average of 9h of daylight.

Sunshine

The month with the least sunshine is December, with an average of 2.3h of sunshine.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to the UV radiation for the ordinary person.
Note: The average daily UV index of 1 transform into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in December in Hamilton?

The average high-temperature, in December, in Hamilton, Canada, is 2°C (35.6°F), while the average low-temperature is -4.7°C (23.5°F).

How many days does it rain in December in Hamilton?

In Hamilton, Canada, during December, the rain falls for 7.6 days and regularly aggregates up to 46.8mm (1.8") of precipitation.

How many days does it snow in December in Hamilton?

In Hamilton, in December, during 8.4 snowfall days, 260mm (10.2") of snow is typically accumulated.

What is the sea temperature in December in Hamilton?

In December, the average sea temperature in Hamilton, Canada, is 4.8°C (40.6°F). For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.

What is the month with the shortest days in Hamilton?

The month with the shortest days is December, with an average of 9h of daylight.

How many hours of daylight does Hamilton have in December?

In December, the average length of the day in Hamilton is 9h.

What is the month with the least sunshine in Hamilton?

December has the least sunshine of the year in Hamilton, with an average of 2.3h of sunshine.

How long on average sun shines in December in Hamilton?

In December, the average sunshine is 2.3h.

What are the months with the lowest UV index in Hamilton?

January and December, with an average maximum UV index of 1, are months with the lowest UV index.

What is the UV index intensity in December in Hamilton?

In Hamilton, the average daily maximum UV index in December is 1. A UV Index of 2, and less, symbolizes a minimal hazard to health from the exposure to the Sun's UV rays.
Average temperature in December - Hamilton, Canada
  • Average high temperature in December: 2°C

The warmest month (with the highest average high temperature) is July (27.3°C).
The month with the lowest average high temperature is January (-0.9°C).

  • Average low temperature in December: -4.7°C

The month with the highest average low temperature is July (16.7°C).
The coldest month (with the lowest average low temperature) is January (-8.5°C).

Average rainfall in December - Hamilton, Canada
  • Average rainfall in December: 46.8mm

The wettest month (with the highest rainfall) is August (89.7mm).
The driest month (with the lowest rainfall) is February (26.4mm).

Average rainfall days in December - Hamilton, Canada
  • Average rainfall days in December: 7.6 days

The month with the highest number of rainy days is November (12.8 days).
The month with the lowest number of rainy days is February (5 days).

Average snowfall in December - Hamilton, Canada
  • Average snowfall in December: 260mm

The month with the highest snowfall is January (324mm).
Months with the lowest snowfall are May, June, July, August, September and October (0mm).

Average snowfall days in December - Hamilton, Canada
  • Average snowfall days in December: 8.4 days

The month with the highest number of snowfall days is January (10.5 days).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in December - Hamilton, Canada
  • Average sea temperature in December: 4.8°C

The best month for swimming (with the highest average sea temperature) is August (23.4°C).
The coldest month (with the lowest average sea temperature) is February (1.2°C).

Average daylight in December / Average sunshine in December - Hamilton, Canada
  • Average daylight in December: 9h

The month with the longest days is June (Average daylight: 15.3h).
The month with shortest days is December (Average daylight: 9h).

  • Average sunshine in December: 2.3h

The month with most sunshine is July (Average sunshine: 9.8h).
The month with least sunshine is December (Average sunshine: 2.3h).

Average UV index in December - Hamilton, Canada
  • Average UV index in December: 1

Months with the highest UV index are June and July (UV index 8).
Months with the lowest UV index are January and December (UV index 1).