January weather forecast
Guam National Wildlife Refuge, GU

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Weather in January

January in Guam National Wildlife Refuge reveals a transition out of the rainy season, with less precipitation and clearer skies than the preceding month. As a direct result of these conditions, outdoor activities are more enjoyable and favored by tourists and locals alike. An average sea temperature of 82.9°F (28.3°C) provides balmy waters for aquatic activities such as snorkeling and swimming. Minor changes occur within the environment, where lower humidity promotes the growth of certain plant species. Sunrises wax earlier, increasing the daylight hours, which positively influences the daily routines of wildlife and residents.

Ocean temperature

In January, the average ocean temperature is 82.9°F (28.3°C).
Note: Water surface temperatures from 77°F (25°C) to 84.2°F (29°C) are considered optimal and extremely delightful for long-lasting pleasure in any water activity.

Daylight

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 6:03 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:19 pm ChST.

Frequently asked questions

How warm is the water in January?

In Guam National Wildlife Refuge, in January, the average water temperature is 82.9°F (28.3°C). For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the average length of the day in January?

The average day length in January is 11h and 25min.

When is the sunrise / sunset in January?

In January, on the first day of the month, sunrise is at 6:43 am and sunset at 6:03 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:19 pm ChST.

Average sea temperature in January
Guam National Wildlife Refuge, GU

Average sea temperature in January - Guam National Wildlife Refuge, GU
  • Average sea temperature in January: 82.9°F

The best month for swimming (with the highest average sea temperature) is August (85.4°F).
The coldest month (with the lowest average sea temperature) is February (82°F).

Average daylight in January
Guam National Wildlife Refuge, GU

Average daylight in January - Guam National Wildlife Refuge, GU
  • Average daylight in January: 11h and 2min

The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 18min).

Guam National Wildlife Refuge, Guam, USA

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