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When to go · Sudbury

Sudbury in May

Avoid month. Listed as a month to avoid: Nov–Apr if you dislike cold and snow; blackfly season late May–Jun.

Key facts

Verdict
Avoid
Temperature
17°C (63°F) / 5°C (42°F)
average high / low
Rain days
11
Crowds
Medium
Canada overall
Prices
Medium
Canada overall

Verdict

AvoidBest and avoid months for Sudbury

Listed as a month to avoid: Nov–Apr if you dislike cold and snow; blackfly season late May–Jun.

Is another month better than May?

May is rated avoid. These months rate higher:

Weather in May

Long-term averages
  • SudburyHighs around 17.4 °C (63 °F), lows around 5.3 °C (42 °F), rain on about 11 days

Crowds and prices

Crowds · Canada overall
Medium
Prices · Canada overall
Medium

Canada overall: Victoria Day weekend opens the season; Rockies lakes still frozen at altitude.

Compare two months

Weather, crowds and prices for any two months in Sudbury, side by side.

  • Verdict

    May: Avoid

    Feb: Great (better)

  • Daytime high

    May: 17.4 °C (63 °F)

    Feb: -5.9 °C (21 °F)

  • Night low

    May: 5.3 °C (42 °F)

    Feb: -16.3 °C (3 °F)

  • Rain days

    May: 11

    Feb: 10 (better)

  • Crowds

    May: Medium

    Feb: Low

  • Prices

    May: Medium

    Feb: Medium

  • Festivals listed

    May: 0

    Feb: 0

May: Listed as a month to avoid: Nov–Apr if you dislike cold and snow; blackfly season late May–Jun.

February: Inside Sudbury's best window: Jun–Sep (warm, long days); Feb–Mar for snow and winter trails.

Sudbury: figures are long-term averages from this guide, not a forecast.

What to pack

  • A warm layer for the evenings
  • A rain jacket or umbrella and shoes that dry fast

Build the full packing list for your trip →

Across Canada in May →