United States (Guam) Guam Weather in October — Climate Guide
October in Guam is high
October is high for Guam.
Post-typhoon shoulder. Korean autumn break.
Travel score
Guam October Weather Stats
Avg High
30°C
Avg Low
25°C
Rainy Days
16
230mm total
Sunshine
7h
Daily avg
Humidity
79%
high
UV Index
11
Extreme
Wind
15 km/h
Gusts 30
Sea Temp
29°C
perfect
Crowds
Busy
At attractions
October 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 October
October Travel Pros & Cons
Pros
- Hotels reasonable
- Korean autumn break
- Sea 29°C
Cons
- Rainy 16 days
- Typhoon residual
October Events & Festivals
- Korean autumn break
- Post-typhoon
Guam in October — Full Picture
Post-typhoon shoulder. Korean autumn break.
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)
30°C
25°C
15/mo
Autumn (Sep·Oct·Nov)
Current29.7°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 October Hotel Picks
Frequently Asked Questions
Is October a good time to visit Guam?
Guam in October is high. Tourist crowds are busy and flight/hotel prices are shoulder.
What's the average temperature in Guam in October?
Guam October averages a high of 30°C and a low of 25°C.
Does it rain much in Guam in October?
Guam October averages 230mm of rainfall over about 16 rainy days.
What should I wear in Guam in October?
Hot tropical + rain.
What time are sunrise and sunset in Guam in October?
Guam October sunrise is 06:20 and sunset is 18:00, with 11h 40min of daylight.
What's the air quality like in Guam in October?
Guam October air quality (AQI) averages 30, rated Good. PM2.5 averages 10μg/m³.
What activities are recommended in Guam in October?
In October, Guam is great for Tumon Bay, Cocos Island, Underwater World.
Is October peak season in Guam?
Guam October 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.