Grand Bend (ON) Temperature by Month

Grand Bend in Ontario, Canada sees significant seasonal temperature differences, with daytime highs between 0°C (32°F) in January and 26°C (79°F) in July, averaging 13°C (55°F) annually. Explore the full monthly breakdown below.

Depending on the time of the year, temperatures range from warm to very cold in Grand Bend. Nighttime lows follow the same pattern, ranging from 19°C (66°F) to -8°C (18°F).

The chart below illustrates the average maximum day and minimum night temperatures in Grand Bend by month:

Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM.

The chart below shows the average temperature throughout the year:

Grand Bend's average annual maximum temperature is 13°C (55°F). To put that in context, here's how it compares to a few well-known destinations:

Lisbon, Portugal averages 21°C (70°F) annually, warm summers, mild winters, and rain mainly in the cooler months.

Queenstown, New Zealand averages 10°C (50°F) annually, remember seasons are flipped, so its coldest months fall in June and July.

Seoul, South Korea averages 18°C (64°F) a year, with four clear seasons, cold winters, and hot humid summers.

Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Grand Bend this rarely lasts long on the ground.

For more on Grand Bend's weather, including monthly rainfall, sunshine hours, and humidity, visit our Grand Bend climate page.