Charlottetown weather by month
The best time to visit Charlottetown is June to August — 90/100 in August, 26°C and 8 rainy days. The best season is summer, June to August (87/100 on average).
The worst month is January at 31/100 — freezing, rainy, clean air. See January →
Updated September 2026 · climate normals from ERA5 reanalysis
Planning the wider trip? Best time to visit Canada →
Best season: June to August (87/100 on average) · worst January (31/100)
- Days
- 26°C
- Nights
- 15°C
- Wet days
- 8
- Sun
- 11 h
- Humidity
- 76%
- Daylight
- 14 h

Charlottetown, month by month
Comfort score out of 100 for the kind of trip Charlottetown is best for, the average high, rainy days and hours of sun a day from the climate normals, and how busy it tends to be.
What's on in Charlottetown through the year
Festivals, natural spectacles, holidays and the seasons to watch out for — curated and sourced. The month pages carry the detail.
Crowds in Charlottetown in August
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdsOld Home Week, Summer break in Canada, school holidays in 2 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Traveller notes on Charlottetown
What people who have been say about the place — the year-round notes first, then month by month.
Forum posters put June daytime highs around 21C and overnight lows near 12C, but note a south wind can push afternoons into the 80s F while a cold snap can still drop nights into the 40s F - below freezing has happened in the first week of June, though it's rare. Many tourist businesses don't fully open until mid-June, with mid-to-late June bringing Green Gables, beaches, shops and the Lobster Suppers into full swing. Two practical warnings repeated often: the sea is only around 10C so swimming is mostly out, and June is peak mosquito season - 'June is buggy' is the recurring phrase.
Forum posters describe December in Charlottetown as starting with snow early in the month before shifting toward cold rain as the month progresses toward Christmas. Posters cite typical overnight lows around -10C and daytime highs around -3C for the December-through-March stretch, with a winter storm passing through roughly every three days on average - about half bringing rain, half bringing snow, making the odds of a white Christmas roughly 50-50. Posters note daytime highs stay below freezing on about half of December's days, with nights almost always below freezing except during a rain event with southerly winds. Posters are direct that most tourist-oriented businesses close for the season, though core city services, lodging and dining in Charlottetown itself remain reliably open year-round. Posters generally rate December as genuinely cold and snow-capable, workable for a visit focused on the city itself rather than seasonal tourist attractions.
Add your own note from Charlottetown's card on the map.