United States Seattle Weather in July (peak month) — Climate Guide
July (peak month) in Seattle is Excellent
Seattle Weather in July (peak month) — Quick Answer
As of 2026- Avg temp
- 24° / 13°
- Rainfall
- 18mm · 3 days
- Crowds
- Very busy
As of 2026, Seattle in July (peak month) averages a high of 24°C and low of 13°C with 18mm of rain over about 3 days. Peak summer — high 24°C, low 13°C. T-shirt all day; light layer for cool evenings. Sunscreen mandatory.
July (peak month) is Excellent for Seattle.
**July is the single best month to visit Seattle.** Mostly sunny + warm + only 3 rainy days/month. Mt Rainier Paradise wildflower meadows peak (Jul-Aug). Long daylight (16+ hours) maximizes sightseeing. Hotel prices + crowds also peak — book 1+ month ahead.
Travel score
Seattle July (peak month) Weather Stats
Avg High
24°C
Avg Low
13°C
Rainy Days
3
18mm total
Sunshine
10h
Daily avg
Humidity
65%
Comfortable
UV Index
8
Very high
Wind
12 km/h
Gusts 25
Sea Temp
13°C
Avg water temp
Crowds
Very busy
At attractions
July (peak month) Sunrise & Sunset
Air Quality
PM2.5
14 μg/m³
PM10
25 μg/m³
Status
Moderate
Feels-Like Temperature & Wind
Feels like
Daytime
24°C
Nighttime
13°C
Humidity and wind affect how the actual temperature feels.
Wind
12 km/h
Max gust 25 km/h
Activities Recommended for July (peak month)
July (peak month) Travel Pros & Cons
Pros
- 24/13°C ideal
- Only 3 rainy days
- 16+ hours daylight
- Mt Rainier wildflowers peak
Cons
- Peak hotel rates
- Maximum crowds
- Wildfires can cause smoke (some years)
July (peak month) Events & Festivals
- July 4 fireworks (Lake Union 'Seafair Summer Fourth')
- Bite of Seattle food festival (Seattle Center)
- Seafair month
Seattle in July (peak month) — Full Picture
**July is the single best month to visit Seattle.** Mostly sunny + warm + only 3 rainy days/month. Mt Rainier Paradise wildflower meadows peak (Jul-Aug). Long daylight (16+ hours) maximizes sightseeing. Hotel prices + crowds also peak — book 1+ month ahead.
What to Wear & What to Pack
Peak summer — high 24°C, low 13°C. T-shirt all day; light layer for cool evenings. Sunscreen mandatory.
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 July (peak month) Hotel Picks
Frequently Asked Questions
Is July (peak month) a good time to visit Seattle?
Seattle in July (peak month) is Excellent. Tourist crowds are very busy and flight/hotel prices are peak.
What's the average temperature in Seattle in July (peak month)?
Seattle July (peak month) averages a high of 24°C and a low of 13°C.
Does it rain much in Seattle in July (peak month)?
Seattle July (peak month) averages 18mm of rainfall over about 3 rainy days.
What should I wear in Seattle in July (peak month)?
Peak summer — high 24°C, low 13°C. T-shirt all day; light layer for cool evenings. Sunscreen mandatory.
What time are sunrise and sunset in Seattle in July (peak month)?
Seattle July (peak month) sunrise is 05:20 and sunset is 21:05, with 15h 45m of daylight.
What's the air quality like in Seattle in July (peak month)?
Seattle July (peak month) air quality (AQI) averages 45, rated Good. PM2.5 averages 14μg/m³.
What activities are recommended in Seattle in July (peak month)?
In July (peak month), Seattle is great for Mt Rainier wildflowers (peak), Olympic National Park, Bainbridge ferry.
Is July (peak month) peak season in Seattle?
Seattle July (peak month) crowds are very busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Seattle
View Other Months
Planning a July (peak month) trip to Seattle?
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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.