Seattle-Tacoma International Airport Climate and Average Weather
Climate of Seattle-Tacoma International Airport: average temperatures, rainfall and seasons month by month.
Climate in Seattle-Tacoma International Airport month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 46° | 35° | 6,1 in | ★★☆☆☆ |
| February | 47° | 36° | 5,2 in | ★★☆☆☆ |
| March | 52° | 39° | 6,5 in | ★★☆☆☆ |
| April | 58° | 42° | 2,8 in | ★★★★☆ |
| May | 65° | 47° | 1,9 in | ★★★★☆ |
| June | 72° | 53° | 1,8 in | ★★★★★ |
| July | 80° | 57° | 0,5 in | ★★★★★ |
| August | 78° | 57° | 1,7 in | ★★★★☆ |
| September | 70° | 53° | 2,1 in | ★★★★☆ |
| October | 60° | 46° | 4,8 in | ★★★☆☆ |
| November | 51° | 40° | 7,8 in | ★★☆☆☆ |
| December | 48° | 39° | 9,7 in | ★☆☆☆☆ |
Climate type: Temperate. Source: Open-Meteo archive (ERA5).
Recent extremes in Seattle-Tacoma International Airport
Highest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How Seattle-Tacoma International Airport compares with nearby places
Annual averages, and the difference against Seattle-Tacoma International Airport.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Area Code 206 | 11 mi | 53°F | +33°F warmer | 43 in |
| King County | 11 mi | 53°F | +33°F warmer | 43 in |
| ZIP Code 98101 | 11 mi | 53°F | +33°F warmer | 43 in |
| Space Needle | 12 mi | 53°F | +33°F warmer | 43 in |
| Mount Rainier National Park | 48 mi | 27°F | 57°F cooler | 103 in |
Best time to visit Seattle-Tacoma International Airport
Go in June, July and August. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: January, November and December - expect the least comfortable mix of heat, cold or rain.
What this means for Seattle-Tacoma International Airport
Today is about average for October. The forecast high of 59°F is in line with the 60°F typical for this month.
A 46% chance means rain is likely somewhere nearby at some point - carry a layer, but do not cancel.
Gusts to 36 mph will push high-sided vehicles on exposed roads and bridges.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 60°F.
What to pack, what to skip
- Layers - the daily swing is 58°F, so mornings feel nothing like afternoons
- Avoid exposed ridgelines, small boats and rooftop viewpoints while gusts stay above 36 mph.
- If your dates are flexible, avoid January, November and December - historically the least comfortable months here.
Summary
Seattle-Tacoma International Airport is an airport in Seattle. Seattle-Tacoma International Airport (SEA) is a commercial airport.
Right now it is 57°F (14°C) in Seattle-Tacoma International Airport with overcast. It feels like 52°F. Today runs from 53°F to 59°F. Chance of precipitation is 46%. Sightseeing conditions score 7.8/10 - good conditions.
The best time to visit Seattle-Tacoma International Airport is June, July and August. The climate is temperate. January, November and December tend to be the least comfortable months. July is the warmest month with average highs near 80°F, while January is the coldest with lows near 35°F.
The closest major airport is Vancouver International Airport (YVR), about 127 mi away. Nearby highlights include Space Needle, Mount Rainier National Park, Mount Rainier and Olympic National Park.
In plain terms. Today is about average for October. The forecast high of 59°F is in line with the 60°F typical for this month. The best window to be outside is roughly 12 PM to 3 PM, when temperature, rain chance and wind line up best. fishing is the strongest bet in Seattle-Tacoma International Airport today at 8.6/10. Gusts to 36 mph will push high-sided vehicles on exposed roads and bridges.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about Seattle-Tacoma International Airport
| Type | Airport |
|---|---|
| City | Seattle |
| Country | United States |
| Continent | North America |
| Coordinates | 47°27′0.7″N 122°18′31.7″W (47.4502, -122.3088) |
| IATA code | SEA |
| Local time | 10:28 PM (UTC-07:00) |
| Best months | June, July and August |
| Climate | Temperate |
Weather map for Seattle-Tacoma International Airport
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Explore Seattle-Tacoma International Airport
Every topic we hold for this place, and the same topic for the places around it.
Climate for related places
Frequently asked questions
Where is Seattle-Tacoma International Airport?
Seattle-Tacoma International Airport is an airport in Seattle. Its coordinates are 47.4502, -122.3088. It lies in North America.
What is the weather like in Seattle-Tacoma International Airport right now?
It is currently 57°F (14°C) with overcast. Humidity is 86% and wind is 15 mph.
When is the best time to visit Seattle-Tacoma International Airport?
June, July and August offer the most comfortable conditions in Seattle-Tacoma International Airport, which has a temperate climate. January, November and December are usually the hardest months for outdoor plans.
What time zone is Seattle-Tacoma International Airport in?
Seattle-Tacoma International Airport observes America/Los_Angeles (UTC-07:00). The local time is 10:28 PM.
What is the nearest airport to Seattle-Tacoma International Airport?
The closest airports are Vancouver International Airport (YVR), 127 mi away and Portland International Airport (PDX), 129 mi away.
What are the top things to do in Seattle-Tacoma International Airport?
Popular options include Space Needle, Mount Rainier National Park, Mount Rainier, Olympic National Park, Deception Pass State Park and North Cascades National Park.
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| Place data | USPOTUS Atlas dataset (airports) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated October 1, 2026 at 10:28 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
