Charlottetown weather in August

August in Charlottetown: warm, rainy, with clean air — one of the best months to visit.

Updated September 2026 · climate normals from ERA5 reanalysis

Charlottetown🇨🇦 Canada · Northeast & Atlantic Canada · City90
  1. 31Jan
  2. 39Feb
  3. 47Mar
  4. 64Apr
  5. 76May
  6. 87Jun
  7. 85Jul
  8. 90Aug
  9. 82Sep
  10. 68Oct
  11. 50Nov
  12. 35Dec

#1 of 12 months in Charlottetown · #223 of 1413 destinations to visit in August · comfort 90/100 (tier S)

Days
26°C
Nights
15°C
Wet days
8
Sun
11 h
Humidity
76%
Daylight
14 h
Charlottetown, Canada
Photo: Bogdan Krupin · Pexels

Traveller notes on Charlottetown in August

Other months in Charlottetown

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.
Tripadvisor community · December · 1 month ago · Read more on Tripadvisor ↗
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.
Tripadvisor community · June · 1 month ago · Read more on Tripadvisor ↗

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Charlottetown climate normals — August

Daytime high26°C / 78°F🌤 warm
Nighttime low15°C / 58°F
Feels like (high)26°C / 79°F
Sea temperature21°C / 69°F🌊 fresh
Rainfall90 mm / 3.5 in🌧 rainy
Rainy days8 days
Humidity76%💦 very humid
Dew point15°C / 60°F
Sunshine11 h/day
Daylight14.1 h
Wind23 km/h / 14 mph
Air quality (US AQI)36🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

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)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Charlottetown's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Best weatherCharlottetown's weather peaks June–August.

August includes Charlottetown Festival.

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Best weatherFair weatherToughest weather

What's on in Charlottetown in August

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Festival

    Charlottetown Festival

    25 Jun – 26 SepArts festivalBook early

    The Confederation Centre's summer theatre season, running from late June into late September, built around the Anne of Green Gables musical that has played here since the 1960s. Matinees sell out before the evening shows do. Source ↗

  • Festival

    Old Home Week

    14–22 AugMajor festivalCrowdedBook early

    The island's agricultural fair takes over the exhibition grounds for nine days in the middle of August: livestock classes, a midway, and the Gold Cup and Saucer harness race that half the province turns out for. Source ↗

What's on around the world in August →

Nearby, and something's on

Within 300 km of Charlottetown — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Charlottetown?

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Charlottetown in August — FAQ

Is August a good time to visit Charlottetown?
August in Charlottetown: warm, rainy, with clean air — one of the best months to visit. It ranks #1 of 12 months for Charlottetown on SeasonMap's comfort score (90/100).
What is the weather like in Charlottetown in August?
In August, Charlottetown averages a daily high of 25.6°C and a low of 14.7°C, with about 89.9 mm of rain over roughly 8.4 rainy days.
What is the air quality in Charlottetown in August?
Charlottetown has a mean US Air Quality Index of about 36 in August.

Within 300 km: Halifax's Halifax Busker Festival on 29 Jul – 3 Aug.