Temperature range
Typical highs and lows
High23.9°C
Low1.5°C
The broad yearly range between warm daytime highs and the coolest overnight lows.
United States Seattle, United States
The climate in Seattle is temperate, with annual average temperatures spanning 7°C / 44°F during February up to 24°C / 75°F in August.
Rainfall averages about 107 mm / 4.2 inches per month, with the wettest conditions in November (196 mm / 7.7 inches) and the driest in July (22 mm / 0.87 inches).
UV peaks in June (index 8) and drops to its lowest in December (index 2); strong sun protection is essential during summer months.
The longest days occur in June with around 15.9 hours of daylight, while December has the shortest days at about 8.5 hours.
Trip planning
Plan your trip
Find the best dates. Understand the conditions. Pack with confidence.
Climate overview
Climate at a glance
The big-picture stats that matter for planning your visit to Seattle.
Rain pattern
Wettest point of the year
196 mm
November carries the highest typical rainfall load.
Sun exposure
Typical peak UV band
Moderate (5.2)
A fast read on how strong midday sun typically gets across the year.
Daylight window
Seasonal daylight range
8 hrsto16 hrs
Useful for gauging how much sightseeing time you get in shorter versus longer seasons.
Wind profile
Typical breeze strength
10 km/h
November is typically the breeziest month.
Humidity
Typical moisture range
67 %to85 %
A quick signal for how dry, comfortable, or heavy the air tends to feel.
When should I go?
Our top-rated months for visiting Seattle, based on long-term weather comfort and conditions
Typical weather by month
Compare all monthsTip: click on a card to see detailed daily weather averages for that month.
How Seattle compares
See how it ranks against the rest of United States for key metrics.
HOTTEST (AVG)
in United States
#18 / 20
COOLEST (AVG)
in United States
#5 / 20
WETTEST (TOTAL)
in United States
#3 / 20
WINDIEST (AVG)
in United States
#14 / 20
HIGHEST UV
in United States
#19 / 20
MOST HUMID
in United States
#2 / 20
Short term outlook
Visiting soon? Here's the next 7 days of weather for Seattle, or see an hourly breakdown for the next 14 days.
Travel planning FAQ
Frequently asked questions
Quick answers to the weather questions you ask the most.
How does the weather in Seattle feel over the year?
Across the year, daytime highs average about 15°C (59°F), with nights near 7°C (45°F). Overall it feels cool by day and cold after dark. Daylight is fairly typical, with enough time for sightseeing. Expect a mix of sun and cloud across the year.
When is the best time to visit Seattle for dry weather?
When is sun exposure strongest in Seattle?
UV tends to peak in June, when UV levels are often high (around 8). Regular sunscreen and a hat are recommended.
Is Seattle a windy place?
Across the year, average winds sit around 10 km/h (6 mph), with gusts on windier days up to about 63 km/h (39 mph). Overall it is it is a notably windy place, and strong gusts are fairly common.
How much daylight does Seattle get?
On average, days offer about 12 hours of daylight. Daylight is fairly typical, with enough time for sightseeing.