December weather forecast
Hamilton, Canada

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

Weather in December

December sees Hamilton in full winter mode with temperatures often plunging to a mere 1.4°C (34.5°F). Snowfall totals 74mm (2.91"), rendering the city a white winter wonderland. The festive spirit prevails, overcoming the sub-zero conditions of the city. The year winds down with shorter days and longer nights, giving Hamilton a picturesque look under the blanket of snow. As winter’s grip tightens, the city glows under soft snowfall, saying goodbye to the old year and welcoming the new with open arms.

Temperature

Stepping into December, Hamilton observes a temperature decline, with the average high falling from November's chilly 7.1°C (44.8°F) to a wintry 1.4°C (34.5°F). In Hamilton, a slight decrease from the daytime peak is noted during the month of December, with an average low-temperature of -2.8°C (27°F).

Humidity

In December, the average relative humidity is 82%.

Rainfall

In December, the rain falls for 11.4 days. Throughout December, 49mm (1.93") of precipitation is accumulated. In Hamilton, during the entire year, the rain falls for 175.2 days and collects up to 711mm (27.99") of precipitation.

Snowfall

Months with snowfall in Hamilton are January through May, November and December. In Hamilton, in December, during 12.4 snowfall days, 74mm (2.91") of snow is typically accumulated. Throughout the year, there are 58.6 snowfall days, and 463mm (18.23") of snow is accumulated.

Sea temperature

In Hamilton, in December, the average water temperature is 4.8°C (40.6°F).
Note: In the scenario of swimming, this is assessed as life-threatening and highly risky. The chilling water causes severe discomfort and induces instant hyperventilation. A specialized swimsuit is necessary to counter thermal damage.

Daylight

The month with the shortest days is December, with an average of 9h and 0min of daylight.
On the first day of the month, sunrise is at 7:32 am and sunset at 4:45 pm. On the last day of December, in Hamilton, Canada, sunrise is at 7:51 am and sunset at 4:54 pm EST.

Sunshine

The average sunshine in December in Hamilton is 3.5h.

UV index

The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 1 in December interprets into the following recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
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Frequently asked questions

How cold is December in Hamilton?

The high-temperature, in December, in Hamilton, records 1.4°C (34.5°F), while the low-temperature is -2.8°C (27°F).

What is the average humidity in December in Hamilton?

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

How much does it rain in Hamilton in December?

In December, in Hamilton, Canada, the rain falls for 11.4 days. Throughout December, 49mm (1.93") of precipitation is accumulated.

How much does it snow in Hamilton in December?

In Hamilton, Canada, during December, snow falls for 12.4 days and regularly aggregates up to 74mm (2.91") of snow.

How cold is the water 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 in Hamilton, Canada, is December, with an average of 9h and 0min of daylight.

What is the average length of the day in December in Hamilton?

In December, the average day length 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 7:32 am and sunset at 4:45 pm. On the last day of the month, in Hamilton, sunrise is at 7:51 am and sunset at 4:54 pm EST.

How long on average sun shines in December in Hamilton?

In December, the average sunshine duration is 3.5h.

What is the month with the lowest UV index in Hamilton?

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

What is the UV index reading 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 health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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 0min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in December: 3h and 3min

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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Hamilton, Canada

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