Ontario weather in December (California, United States of America)

Curious about the climate in Ontario this December? Our guide gives you the essential weather details for this month.

Temperatures

During December, Ontario usually has pleasant temperatures and moderate rainfall. December is a notable month of the winter season. Throughout the day, temperatures typically settle at around 19°C. But by evening, they drop to around 6°C. The temperatures this month are cooler, yet they stay comfortably warm and enjoyable.

Precipitation

Ontario in December usually receives moderate rainfall, averaging around 78 mm for the month. Prepare for the wettest month with an umbrella to protect yourself from frequent rain. Historically, approximately 8 days this month are expected to have rain.

Average sunshine

With around 205 hours of sunshine, the days are mostly sunny. It gives a pleasant and vibrant feel to the area.

If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Ontario. January, February, March, April, May, June, July, September, October and November typically offer the best circumstances. While August and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Ontario climate page with graphs.

 

Ontario, monthly averages in December

Min Temperature 6°C  

Max Temperature 19°C  

Chance of Rain 26%  

Precipitation 78 mm  

Rainy days 8 days  

Sunshine 205 hours *  

Percentage Sunshine *  

Data from: Corona, the United States of America (22 KM, 13 Miles).

Where to go in the United States of America in December

Find out more about the weather in the United States of America and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

For visitors traveling to Ontario, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

9/10

Walking

9/10

Camping

4/10

Outdoor sports

9/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Ontario.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.