Weather in Peterborough in August

Prime time. If you get to pick your dates, August is the one. Highs average 27.7 °C, lows 15.7 °C, and rain falls on 11 days — nothing in the month is working against you.

August ranks 4 of 12 in Peterborough: past the worst of the year but short of September, which is the month to book if the dates are open.

Rain on 11 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

Averages flatten a month, and this one hides a few things: 8 days top 30 °C — hot spells arrive, but they break. Across the twenty years measured, the hottest August day reached 37.1 °C and the coldest night fell to 7.6 °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 87 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 51 mm average is a reasonable planning figure, not a promise.

Wind is light at 1.7 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 65%.

How August sits in the year

Temperatures hold steady either side: 28.5 °C in July, 27.7 here, 23.7 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 Peterborough's extremes of 15.5 and 8.9 hours, so days are long enough not to constrain the plan.

An inland climate

Peterborough has no sea to moderate it, and it shows: 41.1 °C separates the hottest afternoon of the year from the coldest night. That is a genuinely continental range, and it means summer and winter here are barely the same place.

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 Peterborough versus nearby

If Peterborough is one option among several, the nearby comparison is worth making. Barrie is close enough to be a coin toss — 2.2 °C cooler, 1 day less rain. Toronto is close enough to be a coin toss — 3.5 °C cooler, 2 days more rain.

So: August is effectively as good as it gets here — 6 points behind September, which is inside the margin where the weather stops being the deciding factor and price starts being it.

Every month in Peterborough

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