Ancaster, Canada — Weather in December 2026

Climate Overview

Ancaster, Canada in December has cold conditions, with highs averaging around 2.1°C (36°F). Rain falls on about 12 days this month.

This month falls at the beginning of Winter. Cold conditions dominate the month.

Temperatures remain fairly steady throughout December, with daily highs around 3°C (37°F).

Rainfall is heaviest during the last third of the month, while the first third tends to be drier.

Expect around 4.3h of sunshine at the start of December, decreasing to 3.4h by the end.

The warmest days tend to fall around the 1th, averaging 4°C (39°F).

Compared to November, this month is about 6°C cooler with 2 more rainy days. Temperatures begin dropping heading into January.

Monthly December Averages

Temperature

2°C / -4°C

Feels Like

-2°C / -8°C

Rain

12 days · 72 mm

Sunshine

4.1h / day

Humidity

77% — Humid

Wind

21 km/h

Wind Direction

WSW (252°)

Gusts

42 km/h

Daylight

9 h

Cloud Cover

78%

Clear Sky Days

0.4

UV Index

1.6 — Low

Dew Point

-4°C — Dry

Moon Phase

Waxing Crescent · 31%

Snow Days

12 days · 20.1 cm

Frost Days

25 days

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

HighLow

Daily Precipitation

Rainfall

Daily Sunshine

Sunshine

Daily Wind Speed

Wind Speed

Sun Position

Sunrise 07:46

Daylight 9h

Sunset 16:47

What to Expect

Cold daytime highs of 2°C (36°F) mean shorter outdoor excursions with warming breaks. Keep afternoons flexible as tropical showers are common — they typically clear within an hour.

Rain usually comes in shorter passing showers rather than all-day rain.

2 of the last 5 yearly records were warmer than this month's long-run average.

Compare Months

Month	Temp	Feels Like	Rain	Sun	Humidity	UV	Status	Details
January	0°C / -7°C	-5°C / -12°C	10days (70 mm) Wet	4.7h Fair	75% Muggy	1.9 Low	Poor	View Details
February	2°C / -7°C	-3°C / -12°C	10days (68 mm) Wet	6.3h Fair	73% Muggy	3.2 Moderate	Poor	View Details
March	6°C / -3°C	2°C / -7°C	10days (76 mm) Wet	7.6h Good	69% Muggy	4.1 Moderate	Poor	View Details
April	12°C / 2°C	9°C / -2°C	13days (93 mm) Wet	8.8h Good	67% Muggy	5 Moderate	Poor	View Details
May best	19°C / 9°C	18°C / 7°C	10days (76 mm) Wet	10.4h Excellent	68% Muggy	5.9 High	Good	View Details
June best	25°C / 15°C	25°C / 14°C	11days (86 mm) Wet	12h Excellent	66% Muggy	6.7 High	Excellent	View Details
July best	27°C / 18°C	29°C / 19°C	12days (88 mm) Wet	12h Excellent	69% Muggy	6.8 High	Excellent	View Details
August best	26°C / 17°C	27°C / 18°C	11days (82 mm) Wet	11.2h Excellent	72% Muggy	6 High	Excellent	View Details
September best	22°C / 14°C	22°C / 13°C	8days (56 mm) Wet	9.5h Good	73% Muggy	5.1 High	Excellent	View Details
October	15°C / 8°C	13°C / 6°C	11days (80 mm) Wet	6.9h Fair	74% Muggy	3.5 Moderate	Fair	View Details
November	8°C / 1°C	4°C / -3°C	10days (62 mm) Wet	5.5h Fair	74% Muggy	2.2 Moderate	Poor	View Details
December	2°C / -4°C	-2°C / -8°C	12days (72 mm) Wet	4.1h Fair	77% Humid	1.6 Low	Poor	View Details

What to Wear

Full winter gear is a must — insulated coat, thermal base layers, warm hat, gloves, and waterproof boots.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

Warm coatThermal base layersScarf & glovesUmbrellaWaterproof jacketComfortable walking shoes

Frequently Asked Questions

Expand all

Is December a good time to visit Ancaster?

December is typically poor for visiting Ancaster, with average highs of 2°C (36°F) and around 12 rainy days. Ancaster, Canada in December has cold conditions, with highs averaging around 2.1°C (36°F). Rain falls on about 12 days

Does it rain a lot in Ancaster in December?

Ancaster typically sees around 12 rainy days in December with 72 mm (2.8 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Ancaster in December?

Yes, nights in Ancaster during December are cold, averaging -4°C (25°F). Pack warm layers and a coat for evenings.

What should I pack for Ancaster in December?

With highs of 2°C (36°F) and lows of -4°C (25°F) in December, we recommend: Warm coat, Thermal base layers, Scarf & gloves, Umbrella, Waterproof jacket. Comfortable walking shoes are essential.

Is December among the best months weather-wise in Ancaster?

December is not the most favourable month weather-wise in Ancaster. Consider visiting during months with milder temperatures or less rainfall for a better experience.

What is the UV index in Ancaster in December?

The average UV index in Ancaster during December is 2 (low). No special sun protection is needed.

How many hours of daylight are there in Ancaster in December?

Ancaster gets approximately 9 hours of daylight per day in December, with around 4 hours of sunshine.

Does it snow in Ancaster in December?

Yes, Ancaster typically sees around 12 snow days in December with roughly 20 cm (8 in) of snowfall.

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