December weather forecast
Hamilton, Canada

The Central Business District of Hamilton City in Canada
The Central Business District of Hamilton City in Canada

Weather in December

December, the first month of the winter in Hamilton, is still a cold month, with temperature in the range of an average high of 1.4°C (34.5°F) and an average low of -2.8°C (27°F).

Temperature

In December, the average high-temperature decreases from a chilly 7.1°C (44.8°F) in November to a wintry 1.4°C (34.5°F). In Hamilton, Canada, in December, the average low-temperature is -2.8°C (27°F).

Humidity

The average relative humidity in December is 82%.

Rainfall

In December, in Hamilton, the rain falls for 11.4 days. Throughout December, 49mm (1.93") of precipitation is accumulated. Throughout the year, in Hamilton, there are 175.2 rainfall days, and 711mm (27.99") of precipitation is accumulated.

Snowfall

January through May, November and December are months with snowfall in Hamilton. In Hamilton, snow falls for 12.4 days, with typically accumulated 74mm (2.91") of snow. In Hamilton, during the entire year, snow falls for 58.6 days and aggregates up to 463mm (18.23") of snow.

Sea temperature

In Hamilton, the average water temperature is 4.8°C (40.6°F).
Note: For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

Daylight

December has the shortest days of the year, with an average of 9h and 2min of daylight.
On the first day of the month, sunrise is at 7:31 am and sunset at 4:45 pm. On the last day of December, in Hamilton, sunrise is at 7:51 am and sunset at 4:53 pm EST.

Sunshine

In December, the average sunshine in Hamilton is 3.5h.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.
Note: In December, the average maximum UV index of 1 translate into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in December in Hamilton?

In December, the average high-temperature is 1.4°C (34.5°F), and the average low-temperature is -2.8°C (27°F).

What is the average humidity in December in Hamilton?

The average relative humidity in December in Hamilton, Canada, is 82%.

How many days does it rain in December in Hamilton?

In Hamilton, Canada, in December, it is raining for 11.4 days, with typically 49mm (1.93") of accumulated precipitation.

How many days does it snow in December in Hamilton?

In December, in Hamilton, it is snowing for 12.4 days. Throughout December, 74mm (2.91") of snow is accumulated.

How cold is the water in December in Hamilton?

In December, the average sea temperature in Hamilton 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?

December has the shortest days of the year in Hamilton, with an average of 9h and 2min of daylight.

How many hours of daylight does Hamilton have in December?

In Hamilton, the average day length in December is 9h and 2min.

What time are sunrise and sunset in December in Hamilton?

In December, on the first day of the month, sunrise is at 7:31 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:51 am and sunset at 4:53 pm EST.

How many hours of sunshine does Hamilton have in December?

In December, the average sunshine duration is 3.5h.

When is the lowest UV index in Hamilton?

December is the month with the lowest UV index in Hamilton, Canada, with an average maximum UV index of 1.

What is the UV index reading in December in Hamilton?

The average daily maximum UV index in December is 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to Sun's UV rays.

Average temperature in December
Hamilton, Canada

Average temperature in December - Hamilton, Canada
  • Average high temperature in December: 1.4°C

The warmest month (with the highest average high temperature) is July (25.4°C).
The month with the lowest average high temperature is January (-2.3°C).

  • Average low temperature in December: -2.8°C

The month with the highest average low temperature is July (17.3°C).
The coldest month (with the lowest average low temperature) is January (-7.3°C).

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Average pressure in December
Hamilton, Canada

Average pressure in December - Hamilton, Canada
  • Average pressure in December: 1017.6mbar

The months with the highest atmospheric pressure are March and November (1018.5mbar).
The month with the lowest atmospheric pressure is June (1013.3mbar).

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Average wind speed in December
Hamilton, Canada

Average wind speed in December - Hamilton, Canada
  • Average wind speed in December: 17.9km/h

The windiest month (with the highest average wind speed) is January (19km/h).
The calmest month (with the lowest average wind speed) is July (11.3km/h).

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Average humidity in December
Hamilton, Canada

Average humidity in December - Hamilton, Canada
  • Average humidity in December: 82%

The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is April (75%).

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Average rainfall in December
Hamilton, Canada

Average rainfall in December - Hamilton, Canada
  • Average rainfall in December: 49mm

The wettest month (with the highest rainfall) is July (74mm).
The driest month (with the least rainfall) is September (44mm).

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Average rainfall days in December
Hamilton, Canada

Average rainfall days in December - Hamilton, Canada
  • Average rainfall days in December: 11.4 days

The month with the highest number of rainy days is July (19.2 days).
The month with the least rainy days is February (9.3 days).

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Average snowfall in December
Hamilton, Canada

Average snowfall in December - Hamilton, Canada
  • Average snowfall in December: 74mm

The month with the highest snowfall is February (137mm).
The months with the least snowfall are June, July, August, September and October (0mm).

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Average snowfall days in December
Hamilton, Canada

Average snowfall days in December - Hamilton, Canada
  • Average snowfall days in December: 12.4 days

The month with the highest number of snowfall days is January (14.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in December
Hamilton, Canada

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).

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Average daylight in December /
Average sunshine in December
Hamilton, Canada

Average daylight in December / Average sunshine in December - Hamilton, Canada
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 20min).
The month with the shortest days is December (Average daylight: 9h and 2min).

  • Average sunshine in December: 3h and 30min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).

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Average sunshine days in December
Hamilton, Canada

Average sunshine days in December - Hamilton, Canada
  • Average sunshine days in December: 9.9 days

The month with the most sunshine days is September (13.8 days).
The month with the least sunshine days is February (9 days).

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Average UV index in December
Hamilton, Canada

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

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in December
Hamilton, Canada

Average cloud cover in December - Hamilton, Canada
  • Average cloud cover in December: 63

The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in December
Hamilton, Canada

Average visibility in December - Hamilton, Canada
  • Average visibility in December: 9km

The month with the highest visibility is August (10km).
The month with the lowest visibility is January (8km).

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