Weather in January
The ideal ocean temperature of 82.9°F (28.3°C) makes January
National Wildlife Refuge, Guam, the best time for swimming and other water activities.
In Guam National Wildlife Refuge, the average seawater temperature in January is 82.9°F (28.3°C).Note
: Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.
The average length of the day in January is 11h and 25min.
On the first day of January, sunrise is at 6:43 am and sunset at 6:04 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:20 pm ChST.