Weather in May
An excellent water temperature of 84°F (28.9°C) makes May
National Wildlife Refuge, Guam, a prime for swimming and other water activities.
In Guam National Wildlife Refuge, Guam, the average water temperature is 84°F (28.9°C).Note
: For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.
In May, the average length of the day is 12h and 46min.
On the first day of May in Guam National Wildlife Refuge, sunrise is at 5:59 am and sunset at 6:36 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 6:44 pm ChST.