Geography of Guam
Geography of Guam: location, coordinates, elevation, terrain and the places around it.
Geography of Guam
Map of Guam
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Coordinates: 13°26′39.5″N 144°47′37.3″E (13.4443, 144.7937)
Quick facts about Guam
| Type | Country |
|---|---|
| Continent | Oceania |
| Continent | Oceania |
| Coordinates | 13°26′39.5″N 144°47′37.3″E (13.4443, 144.7937) |
| Capital | Hagatna |
| Population | 170.000 |
| Area | 210 sq mi |
| ISO code | GU |
| ISO 3166-1 alpha-3 | GUM |
| Currency | US dollar (USD) |
| Languages | English, Chamorro |
| Calling code | +1-671 |
| Time zone | Pacific/Guam |
| Local time | 12:19 PM (UTC+10:00) |
| Best months | January, February and December |
| Climate | Tropical |
Summary
Guam is a country in Oceania. Guam is a country in Oceania with its capital at Hagatna. It has a population of about 170.000. The capital is Hagatna.
Right now it is 82°F (28°C) in Guam with drizzle. It feels like 81°F. Today runs from 78°F to 83°F. Chance of precipitation is 100%. Sightseeing conditions score 5.6/10 - fair - plan around the weather.
The best time to visit Guam is January, February and December. The climate is tropical. July, August and September tend to be the least comfortable months. May is the warmest month with average highs near 89°F, while March is the coldest with lows near 77°F.
In plain terms. Today is slightly cooler than average for October. The forecast high of 83°F is 3.4°F below the 86°F typical for this month. The best window to be outside is roughly 6 PM to 9 PM, when temperature, rain chance and wind line up best. Gusts to 59 mph will push high-sided vehicles on exposed roads and bridges. Wet roads are likely; braking distances roughly double in heavy rain.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Climate in Guam month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 87° | 78° | 2,5 in | ★★★★☆ |
| February | 87° | 77° | 2,4 in | ★★★★☆ |
| March | 87° | 77° | 4,7 in | ★★★★☆ |
| April | 88° | 78° | 5,0 in | ★★★☆☆ |
| May | 89° | 78° | 5,4 in | ★★★☆☆ |
| June | 89° | 78° | 8,7 in | ★★★☆☆ |
| July | 88° | 78° | 16,6 in | ★★☆☆☆ |
| August | 88° | 78° | 13,1 in | ★★☆☆☆ |
| September | 87° | 77° | 13,2 in | ★★☆☆☆ |
| October | 86° | 77° | 14,7 in | ★★☆☆☆ |
| November | 87° | 78° | 5,5 in | ★★★☆☆ |
| December | 87° | 78° | 3,1 in | ★★★★☆ |
Climate type: Tropical. Source: Open-Meteo archive (ERA5).
Explore Guam
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Frequently asked questions
Where is Guam?
Guam is a country in Oceania. Its coordinates are 13.4443, 144.7937. It lies in Oceania.
What is the weather like in Guam right now?
It is currently 82°F (28°C) with drizzle. Humidity is 83% and wind is 29 mph.
When is the best time to visit Guam?
January, February and December offer the most comfortable conditions in Guam, which has a tropical climate. July, August and September are usually the hardest months for outdoor plans.
What time zone is Guam in?
Guam observes Pacific/Guam (UTC+10:00). The local time is 12:19 PM.
How many people live in Guam?
Guam has a population of approximately 170.000.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (countries-v1) - coordinates, hierarchy and facts. |
|---|---|
| Map tiles | OpenStreetMap contributors, CARTO and Esri. |
| Elevation | Open-Meteo digital elevation model where the dataset has no value. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated October 3, 2026 at 12:19 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
