Guam
United States
This strategic Pacific hub pairs an energetic tourist district with quiet, reef-fringed sandy coves.
Warmest month is April at 31°C on average. Coolest is January at 30°C. Driest reading falls in March with 10 rain days.
Six lead datapoints
- CoffeeWorld Bank PPP baseline$4.50 (~$4.50)PPP price tier 4 / 4
- $6.00 (~$6.00)PPP price tier 4 / 4
- Flight timeMethodology16h from London HeathrowGreat-circle plus routing overhead.
- Flight CO2eDEFRA 2024 factors4,602 kg return from London HeathrowDEFRA 2024 economy factors, includes radiative forcing.
- FCDO advisorygov.uk, snapshot compiled 2026-07-11No specific FCDO warnings against travel.Check the latest FCDO advice before booking.
- Tap waterCDC / WHO guidanceTap water is generally safe to drink.
| Month | Avg high | Swing | Rain days |
|---|---|---|---|
| January | 30° | ±1° | 14 |
| February | 30° | ±1° | 11 |
| March | 30° | ±1° | 10 |
| April | 31° | ±1° | 12 |
| May | 31° | ±1° | 11 |
| June | 31° | ±1° | 17 |
| July | 31° | ±2° | 20 |
| August | 30° | ±2° | 20 |
| September | 31° | ±2° | 22 |
| October | 30° | ±2° | 22 |
| November | 31° | ±1° | 18 |
| December | 30° | ±1° | 14 |
What to do
- Snorkel the clear waters of Tumon Bay
- Explore WWII relics at War in the Pacific National Historical Park
- Hike inland to Tarzan Falls
How we know this
Values are the average of the last ten calendar years of daily readings from Visual Crossing, snapped to the destination cluster. Swing is the p10 to p90 range of daily highs, halved for the ± figure. Rain days count any day with at least 1 mm of precipitation.