United States (Guam) Guam Weather in June — Climate Guide
June in Guam is high
June is high for Guam.
Rainy season start. Hotels reasonable.
Travel score
Guam June Weather Stats
Avg High
30°C
Avg Low
25°C
Rainy Days
13
145mm total
Sunshine
7h
Daily avg
Humidity
78%
high
UV Index
12
Extreme
Wind
15 km/h
Gusts 30
Sea Temp
29°C
perfect
Crowds
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
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 June
June Travel Pros & Cons
Pros
- Hotels reasonable
- Sea 29°C perfect
Cons
- Rainy 13 days
- Heat building
June Events & Festivals
- Rainy season start
Guam in June — Full Picture
Rainy season start. Hotels reasonable.
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 June Hotel Picks
Frequently Asked Questions
Is June a good time to visit Guam?
Guam in June is high. Tourist crowds are busy and flight/hotel prices are shoulder.
What's the average temperature in Guam in June?
Guam June averages a high of 30°C and a low of 25°C.
Does it rain much in Guam in June?
Guam June averages 145mm of rainfall over about 13 rainy days.
What should I wear in Guam in June?
Hot tropical + rain.
What time are sunrise and sunset in Guam in June?
Guam June sunrise is 06:25 and sunset is 18:45, with 12h 20min of daylight.
What's the air quality like in Guam in June?
Guam June air quality (AQI) averages 30, rated Good. PM2.5 averages 10μg/m³.
What activities are recommended in Guam in June?
In June, Guam is great for Tumon Bay morning, Indoor cultural, Cocos Island.
Is June peak season in Guam?
Guam June crowds are busy and prices are shoulder. 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.