Saint John Weather in August

August in Saint John brings pleasant temperatures, with highs of 21°C (70°F) and nights dropping to 14°C (57°F). It's also the driest month of the year, ideal for those who want to avoid rain.

Rainfall in Saint John in August

This month sees the least rain of the year, making it well suited for outdoor adventures. Historically, approximately 12 days this month are expected to have rain, averaging 87 mm (3.4 in). When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Saint John in August

The perfect temperature in Saint John in August makes it a solid month to visit, with 21°C (70°F) during the day and 14°C (57°F) at night. August is in the summer season. Even when the weather is stable, mornings and evenings can still feel distinctly cool. At 14°C (57°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping. On average, it has the peak temperatures of the year.

If your ideal day consists of dry skies and pleasant temperatures, July and August typically offer the best circumstances for Saint John.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Canada, check out our Saint John's climate page.

Saint John Temperature in August

Min Temperature 14°C (57°F)  

Max Temperature 21°C (70°F)  

Chance of Rain 39%  

Precipitation 87 mm (3.4 in)  

Rainy days 12 days  

What to Wear in Saint John in August

Pleasant temperatures in August mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes.

What To Do in Saint John in August

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

Cycling

9/10

Walking

9/10

Camping

8/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Canada, check out our Saint John's climate page.

More climate data for Saint John

Temperature Rainfall

See the full Saint John climate overview or explore weather in Canada.