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Guam — Susupe Guam — Rota Guam — Tinian Guam — Saipan

Guam — weather December, water temperature

By months January February March April May June July August September October November December
29.8°C Daytime temperatures 27.9°C Night temperatures 2 Sunny days 11.3-11.4 Sun (hours) 5 Rainy days 85.9 mm Precipitation 28.7°C water temperature
Air temperature
2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012
The maximum daily temperature 33.5°C — 5 December 2016.
The maximum night temperature 32°C — 13 December 2013.
The minimum daily temperature 26°C — 3 December 2020.
The minimum night temperature 25.5°C — 9 December 2019.
water temperature
2022 2021 2020 2019 2018 2017 2016 2015 2014 2013
The warmest water 29.5 °C — 1 December 2022. The coldest water 27.7 °C — 29 December 2015.
Sunny, cloudy and gloomy days
Precipitation, mm
Maximum precipitation 287.9 mm — September. Minimum precipitation 57 mm — March.
Wind speed, km / h
Maximum wind speed 28.1 km / h — December. Minimum wind speed 15.5 km / h — September.
Number of hours of sunshine
The maximum number of hours of sunshine per day 7 h. — June. The minimum number of hours of sunshine per day 5.4 h. — January.
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