Guam
Territory in Oceania
In brief
Area: 549 km². World rank 199 of 249; in Oceania, 13 of 27. Agricultural land: 29.6% (2024). World rank 124 of 209; in Oceania, 7 of 19. From 2014 to 2024: agricultural land 33.3% → 29.6%.
Territory
- Area
- 549 km²
- Sea access
- Has a coastline
- Coastline, km
- 126
- Neighbours
- None
- Agricultural land
- 29.6% 2024
Elevation
- Highest point
- Mount Lamlam, 406 m
- Lowest point
- Pacific Ocean, 0 m
- Mean elevation, m
- No data
Climate
- Average temperature in the capital, °C
- 28
- Warmest month in the capital
- June, 29°C
- Coldest month in the capital
- February, 27°C
- Precipitation, mm per year
- No data
Climate by month: Hagåtña
June: day 29°C, night 28°C, precipitation 97 mm
Estimate from NASA POWER: averages for 2001–2025 at the capital’s location (grid cell about 50 km across). The city itself is often 1–3 °C warmer in winter.
Table of values
| Month | Day, °C | Night, °C | Precipitation, mm |
|---|---|---|---|
| January | 28 | 27 | 83 |
| February | 28 | 27 | 51 |
| March | 28 | 27 | 43 |
| April | 28 | 27 | 47 |
| May | 29 | 28 | 62 |
| June | 29 | 28 | 97 |
| July | 29 | 28 | 197 |
| August | 29 | 28 | 315 |
| September | 29 | 28 | 278 |
| October | 29 | 28 | 231 |
| November | 29 | 28 | 136 |
| December | 29 | 28 | 69 |