When to go · Seattle
Seattle in May
Good month. Outside the best window (Jun–Sep). Across United States: Warm and green; Memorial Day (last Monday) opens the summer season; timed-entry systems start at some parks.
Key facts
- Verdict
- Good
- Temperature
- 66°C151°F / 49°C120°F
- average high / low
- Rain days
- 11
- Crowds
- Medium
- United States overall
- Prices
- Medium
- United States overall
Verdict
Outside the best window (Jun–Sep). Across United States: Warm and green; Memorial Day (last Monday) opens the summer season; timed-entry systems start at some parks.
Weather in May
- SeattleHighs around 66 °C, lows around 49 °C, rain on about 11 daysHighs around 151 °F, lows around 120 °F, rain on about 11 days
- Pacific Northwest, United States · Seattle, Portland, Olympic, Mount Rainierfine
Grey and damp October–May; July–September is dry and clear, with wildfire smoke in some years.
Festivals and holidays
Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.
Memorial Day big impact
Last Monday of May · United States
Start of summer; roads and beaches full.
Crowds and prices
- Crowds · United States overall
- Medium
- Prices · United States overall
- Medium
United States overall: Warm and green; Memorial Day (last Monday) opens the summer season; timed-entry systems start at some parks.
What to pack
- Light, breathable clothes, a sun hat and sunscreen
- A rain jacket or umbrella and shoes that dry fast