Southwestern Ontario, Ontario, Canada: What to pack, what to wear, and when to go [2021]

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Traveling to Southwestern Ontario, Ontario, Canada? If you're planning to go to Southwestern Ontario, this article contains some important information about when to go, what to wear, and what to pack.

Contents


When to go to Southwestern Ontario, Ontario, Canada

Based on the climate and weather in Southwestern Ontario, the best time to go is July. See below for details.

Important esssentials for Southwestern Ontario, Ontario, Canada

Here are some general tips on what to wear in Southwestern Ontario, as well as several items to remember to pack when traveling there.

What to wear/what to pack for Southwestern Ontario, Ontario, Canada by month

January

January in Southwestern Ontario is beyond freezing and very snowy. The average overnight temperatures in the area are in the 10s F (single digits below 0 C), with a few days below -4 F (20+ below zero C).

It tends to rain once in a while. It also snows about half of the time.

What to wear/what to pack:

February

February in Southwestern Ontario is freezing and somewhat snowy. The rain/snow can amount to several inches/centimeters.

During this time, temperatures average in the low 20s F (single digits below 0 C) to low 20s F (single digits below 0 C), although night temperatures can dip into the single digits F (10+ below zero C).

What to wear/what to pack:

March

March in Southwestern Ontario can be very chilly. The average overnight temperatures in the area are in the low 20s F (single digits below 0 C). It tends to rain 5-10 days this month. It also snows regularly.

What to wear/what to pack:

April

April here is pretty cool and somewhat rainy. Temperatures average in the low 50s F (low 10s C) during the day. It rains regularly.

What to wear/what to pack:

May

May for Southwestern Ontario is relatively cool and somewhat rainy. Temperatures average in the 60s F (high 10s C) during the day. It rains about half of the time.

What to wear/what to pack:

June

If you vacation in Southwestern Ontario during June, you will probably see that it is a perfect temperature and somewhat rainy. Temperatures tend to hover around the 70s F (mid 20s C) during the day, while at night they can dip into the 50s F (low 10s C).

In terms of precipitation, you can expect it to rain about a third of the time.

What to wear/what to pack:

July

If you go to Southwestern Ontario in July, you will notice that it is a perfect temperature and somewhat rainy. Expect it to rain regularly. Daytime temperatures are in the high 70s F (mid 20s C).

What to wear/what to pack:

August

In August, Southwestern Ontario is warm and somewhat rainy. Temperatures routinely are in the 70s F (mid 20s C) range.

At night, lows are in the 50s F (mid 10s C). This is also a rainy time for Southwestern Ontario, with several of the days of the month having rain.

What to wear/what to pack:

September

If you visit Southwestern Ontario during September, you will probably see that it is balmy and somewhat rainy. Temperatures tend to hover around the high 60s F (low 20s C) during the day, while at night they can dip into the low 50s F (single digits C).

In terms of precipitation, you can expect it to rain about half of the time.

What to wear/what to pack:

October

October for Southwestern Ontario is crisp and somewhat rainy. Temperatures average in the 50s F (low 10s C) during the day. It rains about half of the time.

What to wear/what to pack:

November

Traveling to Southwestern Ontario in November, you will notice that it is brisk and somewhat rainy. Expect it to rain about a third of the time and snow about a third of the time.

Daytime temperatures are in the low 40s F (single digits C).

What to wear/what to pack:

December

December in Southwestern Ontario is frigid and somewhat snowy. The average overnight temperatures in the area are in the low 20s F (single digits below 0 C).

It tends to rain about a third of the time. It also snows about half of the time.

What to wear/what to pack:

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