When to go · Seattle
Seattle in December
Avoid month. Listed as a month to avoid: Nov–Feb (grey, wet, short daylight).
Key facts
- Verdict
- Avoid
- Temperature
- 47°C (117°F)117°F (47°C) / 37°C (99°F)99°F (37°C)
- average high / low
- Rain days
- 19
- Crowds
- High
- United States overall
- Prices
- High
- United States overall
Verdict
Listed as a month to avoid: Nov–Feb (grey, wet, short daylight).
Is another month better than December?
December is rated avoid. These months rate higher:
Weather in December
- SeattleHighs around 47 °C (117 °F), lows around 37 °C (99 °F), rain on about 19 daysHighs around 117 °F (47 °C), lows around 99 °F (37 °C), rain on about 19 days
- Pacific Northwest, United States · Seattle, Portland, Olympic, Mount Rainierrainy
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.
Christmas Day big impact
25 Dec · United States
Most businesses closed; flights full from about 20 Dec to 2 Jan.
Crowds and prices
- Crowds · United States overall
- High
- Prices · United States overall
- High
United States overall: Holiday lights in New York, ski season opens; flights and hotels peak around Christmas and New Year.
High-price month: see what to book ahead.
Compare two months
Weather, crowds and prices for any two months in Seattle, side by side.
Verdict
Dec: Avoid
Jun: Great (better)
Daytime high
Dec: 47 °C (117 °F)117 °F (47 °C)
Jun: 71 °C (160 °F)160 °F (71 °C)
Night low
Dec: 37 °C (99 °F)99 °F (37 °C)
Jun: 53 °C (127 °F)127 °F (53 °C)
Rain days
Dec: 19
Jun: 9 (better)
Crowds
Dec: High
Jun: High
Prices
Dec: High
Jun: High
Festivals listed
Dec: 1
Jun: 0
December: Listed as a month to avoid: Nov–Feb (grey, wet, short daylight).
June: Inside Seattle's best window: Jun–Sep.
Seattle: figures are long-term averages from this guide, not a forecast.
What to pack
- Light, breathable clothes, a sun hat and sunscreen
- A rain jacket or umbrella and shoes that dry fast