SeaTac Weather in October

During October, SeaTac experiences moderate daytime temperatures of 16°C (61°F) and cooler nights around 8°C (46°F). Expect quite a bit of rainfall. Around 99 mm (3.9 in) is typical.

Rainfall in SeaTac in October

Typically, you can expect about 16 days of rain this month, with 99 mm (3.9 in) on average. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in SeaTac in October

October in SeaTac brings moderate temperatures, with highs of 16°C (61°F) and nights around 8°C (46°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. At 8°C (46°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.

Sunshine in SeaTac in October

The area enjoys a balanced 143 hours of sunlight, ensuring it's neither too overcast nor too sunny.

Wind Speed in SeaTac in October

October sees wind speeds averaging 4 m/s (8 knots). You'll experience variable conditions with moderate winds that create small waves on water and keep branches moving. Conditions range from light winds to moderate breezes throughout the month.

If you prefer enjoying temperate temperatures and rain-free days, June, July, August and September typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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Check the conditions for any month of the year.

• January
• February
• March
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• May
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• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our SeaTac's climate page.

SeaTac Temperature in October

Min Temperature 8°C (46°F)  

Max Temperature 16°C (61°F)  

Chance of Rain 52%  

Precipitation 99 mm (3.9 in)  

Rainy days 16 days  

Humidity 78% *  

Windspeed 4 m/s (8 knots) *  

Sunshine 143 hours *  

Percentage Sunshine 42% *  

What to Wear in SeaTac in October

Pack for changing conditions in SeaTac in October. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Prepare for significant rainfall with proper waterproof clothing and shoes. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in SeaTac in October

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

6/10

Walking

6/10

Camping

4/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our SeaTac's climate page.

More climate data for SeaTac

Temperature Rainfall Sunshine Humidity Wind Speed

See the full SeaTac climate overview or explore weather in the United States of America.