United States Seattle Weather in April — Climate Guide
April in Seattle is Good
Seattle Weather in April — Quick Answer
As of 2026- Avg temp
- 14° / 6°
- Rainfall
- 80mm · 14 days
- Crowds
- Moderate
As of 2026, Seattle in April averages a high of 14°C and low of 6°C with 80mm of rain over about 14 days. Spring — high 14°C, low 6°C. Light layers + waterproof shell. UV beginning to matter; sunglasses + light sunscreen.
April is Good for Seattle.
April is shoulder season. **Skagit Valley Tulip Festival** (1h north of Seattle) is the regional flower spectacle — 70 hectares of tulip fields in bloom (Apr 1-30 typically). Day-trip from Seattle. Hotel rates still moderate; weather noticeably improving.
Travel score
Seattle April Weather Stats
Avg High
14°C
Avg Low
6°C
Rainy Days
14
80mm total
Sunshine
5h
Daily avg
Humidity
72%
Comfortable
UV Index
4
Moderate
Wind
14 km/h
Gusts 30
Sea Temp
9°C
Avg water temp
Crowds
Moderate
At attractions
April Sunrise & Sunset
Air Quality
PM2.5
10 μg/m³
PM10
20 μg/m³
Status
Good
Feels-Like Temperature & Wind
Feels like
Daytime
13°C
Nighttime
5°C
Humidity and wind affect how the actual temperature feels.
Wind
14 km/h
Max gust 30 km/h
Activities Recommended for April
April Travel Pros & Cons
Pros
- Skagit Valley Tulip Festival (defining Apr event)
- Weather improves (14/6°C)
- Hotel rates moderate
Cons
- Still some rain (14 days)
- Mt Rainier still snowbound
April Events & Festivals
- Skagit Valley Tulip Festival (1h north, April)
- Easter
Seattle in April — Full Picture
April is shoulder season. **Skagit Valley Tulip Festival** (1h north of Seattle) is the regional flower spectacle — 70 hectares of tulip fields in bloom (Apr 1-30 typically). Day-trip from Seattle. Hotel rates still moderate; weather noticeably improving.
What to Wear & What to Pack
Spring — high 14°C, low 6°C. Light layers + waterproof shell. UV beginning to matter; sunglasses + light sunscreen.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
Current14.3°C
6.7°C
13.3/mo
Summer (Jun·Jul·Aug)
22.7°C
12.3°C
5/mo
Autumn (Sep·Oct·Nov)
15.7°C
8°C
13/mo
Winter (Dec·Jan·Feb)
8.7°C
3.3°C
17.3/mo
Seattle Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 8° | 3° | 18d·145mm | 2h | 80% | 1 | Quiet | Low season | |
| 10° | 4° | 16d·110mm | 3h | 78% | 2 | Quiet | Low season | |
| 12° | 5° | 16d·100mm | 4h | 75% | 3 | Moderate | Shoulder | |
| 14° | 6° | 14d·80mm | 5h | 72% | 4 | Moderate | Shoulder | |
| May (Best) | 17° | 9° | 10d·50mm | 7h | 70% | 6 | Busy | Shoulder |
| June (Best) | 20° | 11° | 8d·38mm | 8h | 68% | 7 | Very busy | Peak |
| July (peak month) (Best) | 24° | 13° | 3d·18mm | 10h | 65% | 8 | Very busy | Peak |
| August (Best) | 24° | 13° | 4d·22mm | 9h | 67% | 7 | Very busy | Peak |
| 21° | 11° | 7d·38mm | 7h | 70% | 5 | Busy | Shoulder | |
| 15° | 8° | 13d·90mm | 4h | 75% | 3 | Moderate | Shoulder | |
| 11° | 5° | 19d·175mm | 2h | 80% | 1 | Quiet | Low season | |
| 8° | 3° | 18d·145mm | 2h | 80% | 1 | Busy | Peak |
View Other Months
Seattle April Hotel Picks
Frequently Asked Questions
Is April a good time to visit Seattle?
Seattle in April is Good. Tourist crowds are moderate and flight/hotel prices are shoulder.
What's the average temperature in Seattle in April?
Seattle April averages a high of 14°C and a low of 6°C.
Does it rain much in Seattle in April?
Seattle April averages 80mm of rainfall over about 14 rainy days.
What should I wear in Seattle in April?
Spring — high 14°C, low 6°C. Light layers + waterproof shell. UV beginning to matter; sunglasses + light sunscreen.
What time are sunrise and sunset in Seattle in April?
Seattle April sunrise is 06:15 and sunset is 20:00, with 13h 45m of daylight.
What's the air quality like in Seattle in April?
Seattle April air quality (AQI) averages 35, rated Good. PM2.5 averages 10μg/m³.
What activities are recommended in Seattle in April?
In April, Seattle is great for Skagit Tulip Festival day trip, Bainbridge ferry, Pike Place.
Is April peak season in Seattle?
Seattle April crowds are moderate and prices are shoulder. You can travel relatively comfortably without long queues.
Best Months to Visit Seattle
View Other Months
Planning a April trip to Seattle?
You've checked the weather — next come the budget and the route.
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.