United States (Guam) Guam Weather in March — Climate Guide
March in Guam is very-high
March is very-high for Guam.
BEST MONTH — dry peak + ideal climate.
Travel score
Guam March Weather Stats
Avg High
29°C
Avg Low
24°C
Rainy Days
8
80mm total
Sunshine
8h
Daily avg
Humidity
76%
moderate
UV Index
12
Extreme
Wind
15 km/h
Gusts 25
Sea Temp
28°C
perfect
Crowds
Very busy
At attractions
March Sunrise & Sunset
Air Quality
PM2.5
10 μg/m³
PM10
20 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
33°C
Nighttime
24°C
Humidity and wind affect how the actual temperature feels.
Wind
15 km/h
Max gust 25 km/h
Activities Recommended for March
March Travel Pros & Cons
Pros
- Climate 24-29°C
- Sunny 85%
- Pre-summer peak
Cons
- Hotels surge
March Events & Festivals
- Korean Easter shoulder
Guam in March — Full Picture
BEST MONTH — dry peak + ideal climate.
What to Wear & What to Pack
Tropical dry.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
Current29.7°C
24.3°C
9/mo
Summer (Jun·Jul·Aug)
30°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 March Hotel Picks
Frequently Asked Questions
Is March a good time to visit Guam?
Guam in March is very-high. Tourist crowds are very busy and flight/hotel prices are peak.
What's the average temperature in Guam in March?
Guam March averages a high of 29°C and a low of 24°C.
Does it rain much in Guam in March?
Guam March averages 80mm of rainfall over about 8 rainy days.
What should I wear in Guam in March?
Tropical dry.
What time are sunrise and sunset in Guam in March?
Guam March sunrise is 06:45 and sunset is 18:30, with 11h 45min of daylight.
What's the air quality like in Guam in March?
Guam March air quality (AQI) averages 30, rated Good. PM2.5 averages 10μg/m³.
What activities are recommended in Guam in March?
In March, Guam is great for Tumon Bay, Cocos Island, Two Lovers Point.
Is March peak season in Guam?
Guam March 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.