Weather in Barrie in August

Prime time. August is about as good as Barrie gets. Highs average 25.5 °C, lows 16 °C, and rain falls on 10 days — nothing in the month is working against you.

August is the highest-scoring month of the twelve. The nearest rival is June, and the month at the other end of the year is January.

Rain on 10 days, 1 of them heavy. Enough to need a plan B, not enough to need a plan around it. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.

What the averages hide

The averages here are honest — no hidden extremes worth planning around. Across the twenty years measured, the hottest August day reached 33.8 °C and the coldest night fell to 9.4 °C.

August is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest August on record still delivered 75 mm against 29 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 50 mm average is a reasonable planning figure, not a promise.

Wind is light at 4.8 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 69%.

How August sits in the year

Temperatures hold steady either side: 26 °C in July, 25.5 here, 21.9 in September. Nothing about the timing within the month matters much.

Daylight in August

14.1 hours of daylight, losing 1.3 hours across the month. That is between Barrie's extremes of 15.5 and 8.9 hours, so days are long enough not to constrain the plan.

An inland climate

With no coast nearby, the year swings a fair way — 36.4 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage.

How busy it gets

Peak season. Expect the highest prices of the year and to be booking well ahead.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

August in Barrie versus nearby

If Barrie is one option among several, the nearby comparison is worth making. Toronto is close enough to be a coin toss — within a degree on temperature, 3 days more rain. Peterborough is close enough to be a coin toss — 2.2 °C warmer, 1 day more rain.

So: August is the answer for Barrie. If it is booked out or priced out, June is the next best thing at 2 points behind, and January is the month to keep off the shortlist.

Every month in Barrie

See all twelve months in Barrie, or where else to go in August.