Weather in Peterborough in May

Prime time. If you get to pick your dates, May is the one. Highs average 19.4 °C, lows 6.8 °C, and rain falls on 11 days — nothing in the month is working against you.

May ranks 3 of 12 in Peterborough. Only September scores clearly higher, and the difference is small enough to be settled by price rather than weather.

Rain on 11 days, 2 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 May day reached 34.8 °C and the coldest night fell to -3.3 °C, and the wettest single day dropped 32 mm — roughly 53% of the month's rain in one day.

May is moderately variable: 15 mm in the driest year against 146 mm in the wettest, around an average of 60 mm. Roughly two Mays in three land near that average, and the third does something else entirely.

Wind is light at 1.8 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 73%.

How May sits in the year

The month is on the way up: 7.8 °C warmer than April, and June adds another 5.4 °C. Late in the month feels noticeably different from the start of it, which is worth knowing if the trip is short.

Daylight in May

14.7 hours of daylight, gaining 1.1 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.

May 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 — 2.8 °C cooler, the same number of rain days. Toronto is the weaker option in May — 4.9 °C cooler, 4 days more rain.

So: May 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 May.