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Guam Weather Records

Guam weather data and records from 1957–2022 based on data compiled by the NOAA.
All data displayed in U.S. customary units.
All data displayed in metric units.
All-Time Recorded High
The highest temperature ever recorded in Guam was 95.0 °F35.0 °C which occurred on September 19, 1957.
Highest Temperatures: All-Time By Year
All-Time Recorded Low
The lowest temperature ever recorded in Guam was 54.0 °F12.2 °C which occurred on March 14, 1965.
Lowest Temperatures: All-Time By Year
Guam Weather by Month
Averages based on the years 1991–2020
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
☀️ Average high (°F°C) 85.729.8 85.729.8 86.730.4 87.931.1 88.531.4 88.531.4 87.730.9 87.030.5 87.030.6 87.230.7 87.430.8 86.630.3 87.230.6
🌙 Average low (°F°C) 75.023.9 74.623.7 75.424.1 76.724.8 77.525.3 77.725.4 76.824.9 76.124.5 76.024.4 76.324.6 77.025.0 76.524.7 76.324.6
☀️ Record high (°F°C) 90.032.2 90.032.2 91.933.3 93.033.9 93.033.9 93.934.4 93.934.4 91.933.3 95.035.0 93.033.9 91.933.3 91.032.8 95.035.0
🌙 Record low (°F°C) 55.913.3 59.015.0 54.012.2 59.015.0 62.116.7 63.017.2 64.017.8 63.017.2 61.016.1 64.017.8 62.116.7 61.016.1 54.012.2
💧 Average precipitation (inchescm) 5.313.6 4.110.5 2.87.0 3.38.3 4.511.3 6.616.9 12.331.1 17.744.9 15.238.5 12.732.3 8.321.0 6.015.2 98.7250.8
💧 Daily % chance precipitation 64.9 63.0 59.1 63.1 63.4 77.3 83.9 83.4 83.8 82.0 79.4 73.5 73.1
❄️ Average snow (inchescm) 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0
More Guam Weather Records
1957–2022
Highest daily low 84.0 °F28.9 °C July 28, 2013
Lowest daily high 75.0 °F23.9 °C January 25, 1976
Most daily precipitation 19.7 inches50.0 cm December 8, 2002
Most monthly precipitation 38.5 inches97.8 cm August 1997
Most yearly precipitation 139.1 inches353.3 cm 2002
Most daily snow none -
Guam Weather Streaks
Most consecutive days...
With precipitation 53 days Aug 7 – Sep 28, 1990
Without precipitation 22 days Mar 9–30, 1965
High temperature ≥ 80 °F27 °C 1953 days Sep 22, 2008 – Jan 26, 2014
High temperature ≥ 90 °F32 °C 16 days May 15–30, 2013
Guam Weather by Year
More
Weather Station Details
Years Station Coordinates
1957–2022 Guam International Airport location