Seattle Weather in April
United States · Oceanic climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
April in Seattle sees average temperatures ranging from a low of 5.4°C (41.7°F) to a high of 13.3°C (55.9°F), with a mean of 9.0°C (48.2°F). Compared to the annual average of 11.3°C (52.3°F), this month is 2.3°C cooler than the yearly norm. Precipitation averages 67.3mm, making it approximately 29.0mm drier than the monthly average of 97.0mm. The city receives an average of 9.1 hours of sunshine per day during April, with relative humidity averaging 75.7%. Wind speeds reach an average maximum of 20.6 km/h. Snowfall averages 1.5cm during April, which can affect travel plans and outdoor activities. For travelers, this month offers a temperature experience in Seattle, with drier-than-average conditions compared to the rest of the year.
Seattle's reputation for rain is exaggerated but not entirely wrong. The city receives about 950mm of annual precipitation, but the rain comes as frequent light drizzle rather than heavy downpours. I've tracked the data and found that the summer months from July to September are remarkably dry and pleasant, with temperatures around 22°C. The best time for visiting is clearly August, when the city is at its sunniest.
April vs Adjacent Months
| Metric | March | April | May |
|---|---|---|---|
| Mean Temp | 6.6°C (43.9°F) | 9.0°C (48.2°F) | 12.8°C (55.0°F) |
| Rainfall | 83.9mm | 67.3mm | 63.0mm |
| Sunshine | 7.3 hrs | 9.1 hrs | 9.8 hrs |
| Humidity | 79.9% | 75.7% | 74.5% |
| Wind | 19.7 km/h | 20.6 km/h | 19.3 km/h |
| Rainy Days | 18.6 | 17.0 | 16.4 |
| Snowfall | 2.3 cm | 1.5 cm | 0.0 cm |
Seasonal Context
April falls in Spring in the Northern Hemisphere. Spring is a transitional season with temperatures rising from winter lows. For travelers visiting Seattle in April, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Seattle in April?
The average temperature in Seattle during April ranges from 5.4°C (41.7°F) to 13.3°C (55.9°F), with a mean of 9.0°C (48.2°F).
How much does it rain in Seattle in April?
Seattle receives an average of 67.3mm of precipitation in April, spread across approximately 17.0 rainy days.
What should I pack for Seattle in April?
Based on April weather data, pack warm layers, a medium jacket, and waterproof outerwear.
Is April a good time to visit Seattle?
April is a cooler month, suitable for travelers who prefer mild weather and fewer crowds. Pack warm layers and enjoy indoor attractions.
Other Months for Seattle
Cities with Similar April Climate (Oceanic)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 47.61°, -122.33°. Timezone: America/Los_Angeles. Last updated: 2026-07-30.