SeasonScore
Ottawa, Canada
Photo: G. Baranski · CC BY-SA 3.0

Canada

Ottawa in May

🌷 Spring

Pleasant and some showers.

🎒 Pack: warm jacket for evenings

Best months: May (9.3), Jul (9.3), Sep (9.3)

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Why May scores 9.3What goes into the score

How it works
🌡️ 20° / 8°C🌧️ 75 mm💧 dew pt 8°🍃 PM2.5 6
  • Weather comfort9.0
    • ✓Comfortable temperatures (20°C highs / 8°C lows)
    • ✓Comfortable humidity (dew point 8.1°C)
    • ✓Mostly dry (~75 mm rain)
  • Air quality9.9
    • ✓Good (within WHO guideline) (PM2.5 ~6 µg/m³)
  • Seasonal hazards10.0
    • ·No notable seasonal hazards
  • Safety baseline8.5
    • ·Normal precautions
Compare monthsPut May side by side with another month
MayJul
Score9.3 Excellent9.3 Excellent
Season🌷 Spring☀️ Summer
High / low20° / 8°27° / 15°
Rain75 mm89 mm
Humiditydew pt 8°dew pt 16°
PM2.56 µg/m³12 µg/m³

Typical-month data: NASA POWER (MERRA-2 reanalysis) 2015–2024 (modelled, not a forecast). Temperatures: Ottawa International Airport weather-station normals. Rainfall: Ottawa International Airport weather-station normals (national met service).

Holidays & crowdsMay 2027

No long holidays

No long public-holiday weekends this month. School holidays aren't counted, so check those if you want to avoid family crowds.

No national public holidays in Canada this month.

National holidays only; regional holidays and school breaks aren't included. Source: holidays (open-source public-holiday calendar).

Explore OttawaEvents, sights, food & souvenirs

Check event dates locally

Ottawa is Canada's capital, on the Ottawa River across from Gatineau, Quebec. Visitors come for Parliament Hill, national museums, the Rideau Canal and winter festivals.

Events in May
Canadian Tulip FestivalDate variesDates vary; usually May

Displays of tulips celebrating a gift from the Netherlands after the Second World War.

Why go: One of the prettiest times to visit.

Where: Commissioners Park and around the city

Coming up later

Canada DayEvery year1 July every year

National day celebrations with concerts and fireworks.

Why go: Very crowded; book accommodation well ahead.

Where: Downtown and around Parliament Hill

WinterludeDate variesDates vary; usually the first three weekends of February

A winter festival with ice sculptures, snow play areas and skating.

Why go: Dress for very cold weather and book accommodation early.

Where: Rideau Canal, downtown Ottawa and Gatineau