| Month | Average (°F) | Record (°F) | Average (inches) | |||
|---|---|---|---|---|---|---|
| High ☀️ | Low 🌙 | High ☀️ | Low 🌙 | Precipitation 💧 | Snow ❄️ | |
| January | 85.9 | 75.4 | 94 | 66 | 5.0 | 0.0 |
| February | 86.0 | 75.0 | 93 | 65 | 3.9 | 0.0 |
| March | 86.9 | 75.6 | 93 | 54 | 2.7 | 0.0 |
| April | 88.1 | 76.9 | 96 | 59 | 3.4 | 0.0 |
| May | 88.6 | 77.8 | 94 | 70 | 4.3 | 0.0 |
| June | 88.7 | 78.1 | 95 | 70 | 7.1 | 0.0 |
| July | 87.9 | 77.1 | 95 | 70 | 12.2 | 0.0 |
| August | 87.2 | 76.5 | 94 | 70 | 17.6 | 0.0 |
| September | 87.2 | 76.3 | 94 | 70 | 15.1 | 0.0 |
| October | 87.4 | 76.8 | 93 | 67 | 12.7 | 0.0 |
| November | 87.6 | 77.3 | 92 | 68 | 8.1 | 0.0 |
| December | 86.8 | 76.8 | 91 | 68 | 6.3 | 0.0 |
| Entire year | 87.4 | 76.6 | 96 | 65 | 98.4 | 0.0 |
|
More Guam Weather Records
1945–2024
|
||
|---|---|---|
| Highest daily low | 84 °F | July 28, 2013 |
| Lowest daily high | 76 °F | February 3, 1978 |
| Greatest daily range (Difference of high and low) |
22 °F | March 4, 1973 |
| Greatest difference in daily high over two conscutive days |
14 °F | Sep 17–18, 2014 |
| Most daily precipitation | 19.7 inches | December 8, 2002 |
| Most monthly precipitation | 38.5 inches | August 1997 |
| Most yearly precipitation | 142.3 inches | 1976 |
| Most yearly days with precipitation | 310 | 2011 |
| Most daily snow | none | - |
| Most days in a year ≥ 80 °F | 366 | 2020 |
| Most days in a year ≥ 90 °F | 187 | 1984 |
|
Guam Weather Streaks
Most consecutive days...
|
||
|---|---|---|
| With precipitation | 55 days | Sep 29 – Nov 22, 1988 |
| Without precipitation | 18 days | Dec 6–23, 1977 |
| High temperature ≥ 80 °F | 1953 days | Sep 22, 2008 – Jan 26, 2014 |
| High temperature ≥ 90 °F | 61 days | Apr 23 – Jun 22, 1987 |
| Years | Station | Coordinates |
|---|---|---|
| 1945–2024 | Guam International Airport | location |