United States (Guam) Guam Weather in July — Climate Guide
July in Guam is very-high
July is very-high for Guam.
Korean summer break peak + Liberation Day. Hotels surge.
Travel score
Guam July Weather Stats
Avg High
30°C
Avg Low
25°C
Rainy Days
15
200mm total
Sunshine
7h
Daily avg
Humidity
79%
high
UV Index
11
Extreme
Wind
15 km/h
Gusts 30
Sea Temp
29°C
perfect
Crowds
Very busy
At attractions
July Sunrise & Sunset
Air Quality
PM2.5
10 μg/m³
PM10
20 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
34°C
Nighttime
26°C
Humidity and wind affect how the actual temperature feels.
Wind
15 km/h
Max gust 30 km/h
Activities Recommended for July
July Travel Pros & Cons
Pros
- Korean summer break
- Guam Liberation Day
- Sea 29°C
Cons
- Rainy 15 days
- Hotels surge
July Events & Festivals
- Korean summer break
- Guam Liberation Day (Jul 21)
Guam in July — Full Picture
Korean summer break peak + Liberation Day. Hotels surge.
What to Wear & What to Pack
Hot tropical + rain.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
29.7°C
24.3°C
9/mo
Summer (Jun·Jul·Aug)
Current30°C
25°C
15/mo
Autumn (Sep·Oct·Nov)
29.7°C
25°C
15.7/mo
Winter (Dec·Jan·Feb)
28°C
23.3°C
10.3/mo
Guam Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| January (Best) | 28° | 23° | 10d·130mm | 7h | 78% | 11 | Very busy | Peak |
| February (Best) | 28° | 23° | 9d·100mm | 7h | 76% | 11 | Very busy | Peak |
| March (Best) | 29° | 24° | 8d·80mm | 8h | 76% | 12 | Very busy | Peak |
| April (Best) | 30° | 24° | 8d·90mm | 9h | 76% | 12 | Busy | Peak |
| May (Best) | 30° | 25° | 11d·130mm | 8h | 77% | 12 | Very busy | Peak |
| 30° | 25° | 13d·145mm | 7h | 78% | 12 | Busy | Shoulder | |
| 30° | 25° | 15d·200mm | 7h | 79% | 11 | Very busy | Peak | |
| 30° | 25° | 17d·230mm | 6h | 80% | 11 | Very busy | Peak | |
| 30° | 25° | 17d·250mm | 6h | 80% | 11 | Busy | Shoulder | |
| 30° | 25° | 16d·230mm | 7h | 79% | 11 | Busy | Shoulder | |
| November (Best) | 29° | 25° | 14d·175mm | 7h | 78% | 11 | Busy | Shoulder |
| December (Best) | 28° | 24° | 12d·130mm | 7h | 78% | 10 | Very busy | Peak |
View Other Months
Guam July Hotel Picks
Frequently Asked Questions
Is July a good time to visit Guam?
Guam in July is very-high. Tourist crowds are very busy and flight/hotel prices are peak.
What's the average temperature in Guam in July?
Guam July averages a high of 30°C and a low of 25°C.
Does it rain much in Guam in July?
Guam July averages 200mm of rainfall over about 15 rainy days.
What should I wear in Guam in July?
Hot tropical + rain.
What time are sunrise and sunset in Guam in July?
Guam July sunrise is 06:30 and sunset is 18:45, with 12h 15min of daylight.
What's the air quality like in Guam in July?
Guam July air quality (AQI) averages 30, rated Good. PM2.5 averages 10μg/m³.
What activities are recommended in Guam in July?
In July, Guam is great for Tumon Bay, Liberation Day parade, Cocos Island.
Is July peak season in Guam?
Guam July crowds are very busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Guam
View Other Months
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.