United States Seattle Weather in June — Climate Guide
June in Seattle is Excellent
Seattle Weather in June — Quick Answer
As of 2026- Avg temp
- 20° / 11°
- Rainfall
- 38mm · 8 days
- Crowds
- Very busy
As of 2026, Seattle in June averages a high of 20°C and low of 11°C with 38mm of rain over about 8 days. Early summer — high 20°C, low 11°C. T-shirt during sunny afternoons; light jacket evenings. Sunscreen + sunglasses.
June is Excellent for Seattle.
June is when summer arrives. **Seattle Pride Parade** (last Sunday) draws 500,000+ — among the largest US Pride parades. Capitol Hill is the heart of the celebration; entire weekend is festive city-wide. Mt Rainier wildflowers begin (peak mid-July).
Travel score
Seattle June Weather Stats
Avg High
20°C
Avg Low
11°C
Rainy Days
8
38mm total
Sunshine
8h
Daily avg
Humidity
68%
Comfortable
UV Index
7
High
Wind
13 km/h
Gusts 28
Sea Temp
12°C
Avg water temp
Crowds
Very busy
At attractions
June Sunrise & Sunset
Air Quality
PM2.5
10 μg/m³
PM10
20 μg/m³
Status
Good
Feels-Like Temperature & Wind
Feels like
Daytime
20°C
Nighttime
11°C
Humidity and wind affect how the actual temperature feels.
Wind
13 km/h
Max gust 28 km/h
Activities Recommended for June
June Travel Pros & Cons
Pros
- Seattle Pride (defining June event)
- Dry weather (8 rainy days)
- Mt Rainier wildflowers begin
Cons
- Peak hotel rates begin
- Pride Parade crowds Capitol Hill
June Events & Festivals
- Seattle Pride Parade (last Sunday in June, 500,000+ attendees)
- Start of summer
Seattle in June — Full Picture
June is when summer arrives. **Seattle Pride Parade** (last Sunday) draws 500,000+ — among the largest US Pride parades. Capitol Hill is the heart of the celebration; entire weekend is festive city-wide. Mt Rainier wildflowers begin (peak mid-July).
What to Wear & What to Pack
Early summer — high 20°C, low 11°C. T-shirt during sunny afternoons; light jacket evenings. Sunscreen + sunglasses.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
14.3°C
6.7°C
13.3/mo
Summer (Jun·Jul·Aug)
Current22.7°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 June Hotel Picks
Frequently Asked Questions
Is June a good time to visit Seattle?
Seattle in June is Excellent. Tourist crowds are very busy and flight/hotel prices are peak.
What's the average temperature in Seattle in June?
Seattle June averages a high of 20°C and a low of 11°C.
Does it rain much in Seattle in June?
Seattle June averages 38mm of rainfall over about 8 rainy days.
What should I wear in Seattle in June?
Early summer — high 20°C, low 11°C. T-shirt during sunny afternoons; light jacket evenings. Sunscreen + sunglasses.
What time are sunrise and sunset in Seattle in June?
Seattle June sunrise is 05:10 and sunset is 21:10, with 16h 00m of daylight.
What's the air quality like in Seattle in June?
Seattle June air quality (AQI) averages 35, rated Good. PM2.5 averages 10μg/m³.
What activities are recommended in Seattle in June?
In June, Seattle is great for Seattle Pride Parade, Mt Rainier day trip, Pike Place.
Is June peak season in Seattle?
Seattle June crowds are very busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Seattle
View Other Months
Planning a June 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.