Sarnia weather in May (Ontario, Canada)

Thinking of visiting Sarnia in May? Check the weather first! Want to know if this month is ideal for visiting? Our guide provides detailed weather information.

Temperatures

The month of May in Sarnia typically brings pleasant temperatures and moderate rainfall. During the daylight hours, temperatures often reach 19°C. After dark they usually decrease to around 10°C.

Precipitation

Sarnia in May usually receives moderate rainfall, averaging around 92 mm for the month. You can typically expect 10 days days of rain this month, based on climate records.

If your ideal day consists of dry skies and moderate temperatures June, July, August and September generally stand out with the best circumstances. While January, February, March, November and December tend to showcase less optimal conditions.

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

 

Sarnia, monthly averages in May

Min Temperature 10°C  

Max Temperature 19°C  

Chance of Rain 34%  

Precipitation 92 mm  

Rainy days 10 days  

Where to go in Canada in May

Find out more about the weather in Canada 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 Sarnia, 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 Sarnia.

Our site offers climate and forecast data for every country in the world. Are you going to Canada? On this website you can find historical weather averages for many cities in Canada. 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.