Monthly weather averages & travel planning

North America › 🇺🇸 United States › Seattle
Updated: March 2026
February is a fair time to visit Seattle (4/10). Average highs of 19°C and 3 sunshine hours daily make conditions workable, though not exceptional. February suits travellers visiting for indoor culture, food, and architecture rather than outdoor activities. Pack accordingly for 5 potential rain days. January offers a similar profile at lower hotel rates if dates are flexible. The main practical note: Seattle's popular sites are busiest between 10am and 3pm regardless of season. Arriving at opening time or after 4pm makes a significant difference to the experience. Planning tips: most accommodation categories have availability, and last-minute deals are common. The quieter streets and shorter queues can make this a genuinely enjoyable time to visit for the right type of traveller. Budget-conscious visitors will find the best value of the year in this period.
Seattle in February rewards travelers with average highs of 19°C and overnight lows around 10°C. Expect around 5 rainy days, making it one of the drier periods in the city. With 3 daily sunshine hours on average, conditions are comfortable for sightseeing at a relaxed pace.
19°C
66°F
Avg High
10°C
50°F
Avg Low
5 days
62 mm total
Rain Days
3h
per day avg
Sunshine
65%
Moderate
Humidity
The 9°C day-night temperature range is typical for continental climates: a light jacket in the morning that you shed by midday and need again after sunset. Humidity averages 65%, which is comfortable for most visitors. On warmer days, lighter fabrics help with the mild stickiness in the afternoon. The UV index of 1 is low, meaning sun exposure is minimal concern and sunscreen is largely optional. Wind averages 15 km/h, light enough to be refreshing on warm days but noticeable in open coastal areas or elevated viewpoints. In Fahrenheit: 66°F average high, 50°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).
Packing for Seattle in February means dressing for 19°C days and 10°C evenings. A light cotton tee with a casual overshirt works well at 19°C, the overshirt doubles as a layer for air-conditioned venues. Evening temperatures settle at 10°C, a modest 9°C drop that a light cardigan or denim jacket covers. Comfortable walking trainers are the versatile choice for both outdoor sightseeing and indoor venues.
Local tip: Layers are more practical than a single heavy garment in Seattle. The day-to-evening temperature shift rewards packing a versatile mid-layer you can add or remove as conditions change.
February has no major festivals or public holidays in Seattle, which is one of its practical advantages for independent travellers. Attractions run at lower capacity than during peak event periods, queues are shorter, and accommodation is easier to find without needing to book many months in advance. Local restaurants, markets, and transport operate at a relaxed pace, making this an ideal time for visitors who prefer a more authentic, unhurried experience of everyday city life rather than large crowds drawn in by a single major headline event.
Based on 19°C average highs and 5 rainy days
In February, Seattle feels the full influence of the continental polar air mass, which dominates mid-latitude interiors during winter. Cold, dry air from the north suppresses temperatures to 19°C during the day, dropping further to 10°C at night when radiative cooling is greatest. Precipitation tends to be low, as the cold air holds little moisture. Climate data: Open-Meteo ERA5 (1991–2020).
Sunshine Hours
The average number of hours per day with direct sunlight. Calculated from satellite measurements. Days with more than 7 hours of sunshine are ideal for outdoor activities. Under 3 hours means overcast conditions dominate.
UV Index
A scale from 0-11+ measuring ultraviolet radiation intensity. UV 0-2: Minimal risk. UV 3-5: Moderate, wear sunscreen. UV 6-7: High, hat and SPF 30+ essential. UV 8-10: Very High, limit midday exposure. UV 11+: Extreme, seek shade between 10am-4pm.
Rain Days
A rain day is counted when precipitation exceeds 0.1mm. This threshold captures even light drizzle. Unlike total rainfall in mm, rain days tells you how often you might need an umbrella, which is useful for planning outdoor activities.
Humidity
Relative humidity as a percentage. Below 40%: Dry, skin and throat may feel parched. 40-60%: Comfortable, ideal for most people. 60-80%: Sticky, light breathable fabrics recommended. Above 80%: Muggy, heat feels more intense; quick-dry clothing is essential.
Seattle in February
February ranks 8th sunniest of the year in Seattle, with an average 3 daily sunshine hours. The driest months are May, June, and July. June is the hottest month (29°C avg high); December is the coolest (15°C). From here, temperatures rise 3°C into March. Compared to last month (January: 16°C high, 6 rain days), February is warmer and drier. February sits in the middle of the annual sunshine ranking for Seattle, offering a reasonable balance of good weather and manageable crowds.
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | 16°C | 7°C | 6 | 1h | View |
| February | 19°C | 10°C | 5 | 3h | View |
| March | 22°C | 13°C | 4 | 4h | View |
| April | 26°C | 17°C | 2 | 6h | View |
| May | 28°C | 19°C | 1 | 7h | View |
| June | 29°C | 20°C | 1 | 7h | View |
| July | 28°C | 19°C | 1 | 7h | View |
| August | 26°C | 17°C | 2 | 6h | View |
| September | 22°C | 13°C | 4 | 4h | View |
| October | 19°C | 10°C | 5 | 3h | View |
| November | 16°C | 7°C | 6 | 1h | View |
| December | 15°C | 6°C | 7 | 1h | View |
January
6 rain days, 1h sun
February
5 rain days, 3h sun
March
4 rain days, 4h sun
April
2 rain days, 6h sun
May
1 rain days, 7h sun
June
1 rain days, 7h sun
July
1 rain days, 7h sun
August
2 rain days, 6h sun
September
4 rain days, 4h sun
October
5 rain days, 3h sun
November
6 rain days, 1h sun
December
7 rain days, 1h sun
Data Sources for Seattle
Climate normals represent 30-year averages (1991-2020). Individual years may vary.