Best Time to Visit
🇺🇸 Seattle, United States · North America
Based on 30-year climate data (1991-2020) from Open-Meteo
Jan
8°
2°
Poor
Feb
9°
2°
Fair
Mar
11°
3°
Good
Apr
14°
5°
Good
May
18°
8°
Good
Jun
21°
11°
Good
Jul
25°
14°
Great
Aug
25°
14°
Great
Sep
21°
12°
Great
Oct
15°
8°
Good
Nov
10°
4°
Fair
Dec
7°
2°
Poor
| Month | High | Low | Rain Days | Sunshine | Humidity | UV | Rating | Details |
|---|---|---|---|---|---|---|---|---|
| January | 8°C | 2°C | 18 | 4h | 65% | 1 | Poor | View |
| February | 9°C | 2°C | 14 | 6h | 65% | 1 | Fair | View |
| March | 11°C | 3°C | 18 | 8h | 65% | 6 | Good | View |
| April | 14°C | 5°C | 16 | 10h | 65% | 6 | Good | View |
| May | 18°C | 8°C | 13 | 11h | 65% | 10 | Good | View |
| June | 21°C | 11°C | 10 | 12h | 65% | 10 | Good | View |
| JulyRecommended | 25°C | 14°C | 6 | 13h | 65% | 10 | Great | View |
| AugustRecommended | 25°C | 14°C | 5 | 12h | 65% | 10 | Great | View |
| SeptemberRecommended | 21°C | 12°C | 8 | 10h | 65% | 6 | Great | View |
| October | 15°C | 8°C | 15 | 7h | 65% | 6 | Good | View |
| November | 10°C | 4°C | 18 | 5h | 65% | 1 | Fair | View |
| December | 7°C | 2°C | 18 | 4h | 65% | 1 | Poor | View |
Data source: Open-Meteo ERA5 reanalysis archive, 30-year historical normals (1991-2020). Temperatures in Celsius. Sunshine hours are daily averages.
Avg: 14°C high, 5°C low
Mild conditions at 14°C (57°F), layers recommended. Rain is frequent, waterproof gear recommended. Nights cool to 5°C (41°F).
Avg: 24°C high, 13°C low
Comfortable warmth at 24°C (75°F), ideal for outdoor activities. Occasional showers possible. Nights cool to 13°C (55°F).
Avg: 15°C high, 8°C low
Mild conditions at 15°C (59°F), layers recommended. Rain is frequent, waterproof gear recommended. Nights cool to 8°C (46°F).
Avg: 8°C high, 2°C low
Cool to cold at 8°C (46°F), warm clothing essential. Rain is frequent, waterproof gear recommended. Nights cool to 2°C (36°F).
The least favorable time to visit Seattle is January and December. During this period, you can expect cold weather, heavy rainfall.
January
Challenges: cold weather, heavy rainfall
December
Challenges: cold weather, heavy rainfall
February
Challenges: cold weather, frequent rain
Note: visiting during off-peak months often means lower prices, fewer crowds, and a more authentic experience.
Packing recommendations for visiting Seattle during the best travel months (August, July, September), when temperatures range from 13°C to 24°C:
Seattle has a Mediterranean climate (Koppen classification: Csb). The warmest month is August with highs of 25°C, while the coldest month is December at just 7°C. Annual rainfall averages 1296mm across approximately 159 rain days.
| Metric | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °C | 8 | 9 | 11 | 14 | 18 | 21 | 25 | 25 | 21 | 15 | 10 | 7 |
| Low °C | 2 | 2 | 3 | 5 | 8 | 11 | 14 | 14 | 12 | 8 | 4 | 2 |
| Rain Days | 18 | 14 | 18 | 16 | 13 | 10 | 6 | 5 | 8 | 15 | 18 | 18 |
| Rain mm | 175 | 119 | 136 | 111 | 76 | 59 | 25 | 34 | 64 | 129 | 192 | 176 |
| Sun h/day | 4 | 6 | 8 | 10 | 11 | 12 | 13 | 12 | 10 | 7 | 5 | 4 |
| Humidity % | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 |
| UV Index | 1 | 1 | 6 | 6 | 10 | 10 | 10 | 10 | 6 | 6 | 1 | 1 |
Considering alternatives to Seattle? Compare the best travel months for nearby cities:
For a complete day-by-day weather breakdown including packing lists, activities, and local events, explore each month individually:
January
February
March
April
May
June
July
August
September
October
November
December
Explore weather guides for other popular destinations: