Best months
June, July, and August
Warmest month
July, 26°C
Wettest month
November, 137 mm
Seattle weather by month
Average daily high and low, total rainfall and days with at least 2.5 mm of rain.
| Month | High / low | Rain | Verdict |
|---|---|---|---|
| January | 9°C / 3°C | 114 mm · 11 days | Cold |
| February | 10°C / 3°C | 79 mm · 8 days | Cold |
| March | 12°C / 4°C | 93 mm · 10 days | Wet |
| April | 15°C / 6°C | 63 mm · 7 days | Fair |
| May | 19°C / 10°C | 41 mm · 5 days | Good |
| June | 22°C / 13°C | 28 mm · 4 days | Great |
| July | 26°C / 15°C | 7 mm · 1 day | Great |
| August | 25°C / 15°C | 14 mm · 2 days | Great |
| September | 22°C / 13°C | 40 mm · 4 days | Great |
| October | 16°C / 8°C | 84 mm · 8 days | Fair |
| November | 12°C / 5°C | 137 mm · 11 days | Cold |
| December | 9°C / 3°C | 128 mm · 11 days | Cold |
Seattle by season
Spring
Spring brings blooming cherry blossoms at the University of Washington and gradually longer, milder days. Rain is still frequent, but sunny breaks become more common, and the city starts to shake off its winter grey.
- + Beautiful cherry blossoms (late March-April)
- + Fewer tourists than summer
- + Lower accommodation prices
- − Unpredictable, often rainy weather
- − Cool temperatures (avg 10-15°C)
Summer
Seattle's glorious, dry season with long, sunny days and mild temperatures. The city comes alive with festivals, outdoor dining, and everyone heads outside to soak up the perfect weather. This is peak tourist season.
- + Near-perfect weather (sunny, 20-25°C)
- + Long daylight hours (sunset after 9 PM)
- + All outdoor attractions and hiking are accessible
- − Highest prices for flights and hotels
- − Crowds at major attractions
Autumn
Crisp air, changing leaves, and the return of the famous 'Seattle drizzle.' The summer crowds dissipate, but the weather remains pleasant through September and often into October, making it a local favorite.
- + Stunning fall foliage, especially in city parks
- + Shoulder season prices and fewer crowds
- + Pleasant temperatures for urban exploration
- − Increasing rain and shorter days
- − Unpredictable weather shifts
Winter
Grey, damp, and short days define a Seattle winter. While it rarely snows in the city, the surrounding mountains get heavy snowfall, making it a great base for skiers. The city turns cozy with coffee shops and holiday lights.
- + Lowest tourist crowds and hotel rates
- + Prime time for skiing/snowboarding at nearby resorts
- + Cozy atmosphere with holiday markets and lights
- − Very short daylight hours (sunset around 4:30 PM)
- − Frequent overcast skies and rain
Seattle month by month
Seattle in January
ColdIn January, Seattle averages highs of 9°C and lows of 3°C, with about 11 rainy days and 114 mm of rain. It is cold, so pack warm layers.
Seattle in February
ColdIn February, Seattle averages highs of 10°C and lows of 3°C, with about 8 rainy days and 79 mm of rain. It is cold, so pack warm layers.
Seattle in March
WetIn March, Seattle averages highs of 12°C and lows of 4°C, with about 10 rainy days and 93 mm of rain. It is one of the wetter months, so keep indoor plans in reserve.
Seattle in April
FairIn April, Seattle averages highs of 15°C and lows of 6°C, with about 7 rainy days and 63 mm of rain. Expect mixed weather, with comfortable spells.
Seattle in May
GoodIn May, Seattle averages highs of 19°C and lows of 10°C, with about 5 rainy days and 41 mm of rain. It is a good month to visit.
Seattle in June
GreatIn June, Seattle averages highs of 22°C and lows of 13°C, with about 4 rainy days and 28 mm of rain. It is one of the most comfortable months for sightseeing.
Seattle in July
GreatIn July, Seattle averages highs of 26°C and lows of 15°C, with about 1 rainy day and 7 mm of rain. It is one of the most comfortable months for sightseeing.
Seattle in August
GreatIn August, Seattle averages highs of 25°C and lows of 15°C, with about 2 rainy days and 14 mm of rain. It is one of the most comfortable months for sightseeing.
Seattle in September
GreatIn September, Seattle averages highs of 22°C and lows of 13°C, with about 4 rainy days and 40 mm of rain. It is one of the most comfortable months for sightseeing.
Seattle in October
FairIn October, Seattle averages highs of 16°C and lows of 8°C, with about 8 rainy days and 84 mm of rain. Expect mixed weather, with comfortable spells.
Seattle in November
ColdIn November, Seattle averages highs of 12°C and lows of 5°C, with about 11 rainy days and 137 mm of rain. It is cold, so pack warm layers.
Seattle in December
ColdIn December, Seattle averages highs of 9°C and lows of 3°C, with about 11 rainy days and 128 mm of rain. It is cold, so pack warm layers.
Top tours and experiences in Seattle
The tours and tickets travellers book most, with ratings and reviews from Viator.
All things to do in Seattle →
Tours and prices from Viator, a Tripadvisor company. Prices change with your dates. We may earn a commission if you book, at no extra cost to you.
Plan your Seattle trip
Best time to visit Seattle: FAQ
What is the best month to visit Seattle?+
June is the most comfortable month on average, with highs of 22°C. July and August are close behind.
What is the rainiest month in Seattle?+
November is the wettest month, with about 137 mm of rain.
How hot does Seattle get?+
July is the warmest month, with average highs of 26°C and lows of 15°C. The coldest nights come in December, averaging 3°C.
Averages for 2006–2025 from the SEATTLE BOEING FLD weather station (7 km from the centre), NOAA Global Historical Climatology Network. Verdicts rate sightseeing comfort from daytime highs and rainy days.