When to go · SeaTac

SeaTac in April

Avoid month. Listed as a month to avoid: Nov–Apr (rainier, colder).

Key facts

Verdict: Avoid
Temperature: 15°C (59°F)59°F (15°C) / 5°C (41°F)41°F (5°C); average high / low
Rain days: 8
Crowds: Medium; United States overall
Prices: Medium; United States overall

Plan around it

Verdict

AvoidBest and avoid months for SeaTac

Listed as a month to avoid: Nov–Apr (rainier, colder).

Is another month better than April?

April is rated avoid. These months rate higher:

Weather in April

Long-term averages

SeaTacHighs around 15 °C (59 °F), lows around 5 °C (41 °F), rain on about 8 daysHighs around 59 °F (15 °C), lows around 41 °F (5 °C), rain on about 8 days

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.

Spring break big impact
March–April · United States
Students fill Florida, Texas and Mexico beaches; parks busy.

Crowds and prices

Crowds · United States overall: Medium
Prices · United States overall: Medium

United States overall: Good month for the Southwest, Washington cherry blossoms, the South; mountain roads still closed.

Compare two months

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

First month

Second month

Verdict
Apr: Avoid
May: Great (better)
Daytime high
Apr: 15 °C (59 °F)59 °F (15 °C)
May: 19 °C (66 °F)66 °F (19 °C)
Night low
Apr: 5 °C (41 °F)41 °F (5 °C)
May: 9 °C (48 °F)48 °F (9 °C)
Rain days
Apr: 8
May: 6 (better)
Crowds
Apr: Medium
May: Medium
Prices
Apr: Medium
May: Medium
Festivals listed
Apr: 1
May: 1

April: Listed as a month to avoid: Nov–Apr (rainier, colder).

May: Inside SeaTac's best window: May–Oct (mild weather, fewer rain days).

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

What to pack

A warm coat, hat and gloves for mornings and evenings

Build the full packing list for your trip →

Across United States in April →