Live Weather & Forecast
Weather in Guam
United States · Real-time conditions & 3-day outlook
27°C
Feels like 32°C
81°F / Feels 89°F
Partly cloudy
Guam, United States
🌙 Nighttime
Updated: 2026-04-16 02:30
Humidity
84%
Wind
59 km/h SW
Wind Gust
87.8 km/h
Pressure
996 mb
Visibility
16 km
UV Index
0
(Low)
Precipitation
1.55 mm
Cloud Cover
75%
Dew Point
24.3°C
Wind Degree
235°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
135.9 μg/m³
NO₂
1.1 μg/m³
O₃
54 μg/m³
SO₂
1 μg/m³
PM 2.5
7.8 μg/m³
PM 10
12.3 μg/m³
Today's Hourly Forecast
24-hour breakdown for Guam, United States
12 AM
27°
Light rain shower
1 AM
27°
Light rain shower
2 AM
27°
Partly cloudy
3 AM
27°
Light rain shower
4 AM
27°
Light rain shower
5 AM
27°
Light rain shower
6 AM
27°
Light rain shower
7 AM
27°
Light rain shower
8 AM
27°
Light rain shower
9 AM
27°
Light rain shower
10 AM
27°
Light rain shower
11 AM
27°
Light rain shower
12 PM
27°
Thundery outbreaks in nearby
1 PM
27°
Patchy rain nearby
2 PM
27°
Light rain shower
3 PM
27°
Patchy rain nearby
4 PM
27°
Light rain shower
5 PM
27°
Light rain shower
6 PM
27°
Light rain shower
7 PM
27°
Light rain shower
8 PM
27°
Partly Cloudy
9 PM
27°
Patchy rain nearby
10 PM
27°
Patchy rain nearby
11 PM
27°
Patchy rain nearby
3-Day Forecast
Daily overview for Guam, United States
Today
Moderate rain
27°
/
27°
🌧️ 97% chance of rain
💧 Avg. humidity: 87%
💨 Max wind: 59.4 km/h
🌧️ Total precip: 16.93 mm
☀️ UV Index: 2.1
🌅 Sunrise: 06:07 AM
🌇 Sunset: 06:34 PM
🌙 Waning Crescent
🌑 Moon: 3% lit
Fri, Apr 17
Patchy rain nearby
28°
/
26°
🌧️ 87% chance of rain
💧 Avg. humidity: 85%
💨 Max wind: 38.5 km/h
🌧️ Total precip: 1.39 mm
☀️ UV Index: 3
🌅 Sunrise: 06:07 AM
🌇 Sunset: 06:34 PM
🌙 New Moon
🌑 Moon: 0% lit
Sat, Apr 18
Patchy rain nearby
28°
/
26°
🌧️ 89% chance of rain
💧 Avg. humidity: 81%
💨 Max wind: 22.3 km/h
🌧️ Total precip: 2.17 mm
☀️ UV Index: 2.7
🌅 Sunrise: 06:06 AM
🌇 Sunset: 06:34 PM
🌙 Waxing Crescent
🌑 Moon: 1% lit
Best Time to Visit Guam
Plan your trip around the most favorable weather conditions in Guam, United States.
Peak Season
November – April
Dry season — low humidity, clear skies, comfortable temperatures.
Shoulder Season
May, October
Fewer crowds, moderate prices, mild weather.
Off Season
June – September
Wet/monsoon season; heavier rainfall possible.
Frequently Asked Questions
What is the current weather in Guam?
Current conditions in Guam: Partly cloudy, temperature 27°C, humidity 84%.
What is the best time to visit Guam?
The best time to visit Guam is typically November – April. Dry season — low humidity, clear skies, comfortable temperatures.
What is the climate like in Guam?
Guam shares the climate of United States. It has a tropical or subtropical climate.
Does it rain a lot in Guam?
Rainfall patterns in Guam vary by season. Being in a tropical zone, Guam can experience heavy rainfall during the wet season (June – September).
What should I pack for Guam?
For visits during November – April: light clothing and sun protection. For the June – September period: layers and a waterproof jacket are recommended for Guam.
What country is Guam in?
Guam is a state/province of United States.
What are the public holidays in Guam in 2026?
View the full list of 2026 public holidays for Guam on our Holidays page.
What are the coordinates for the weather forecast in Guam?
The weather forecast for Guam is based on coordinates 13.5167, 144.8391.