January weather forecast
Rota, Northern Mariana Islands, USA

January's weather in Rota, Northern Mariana Islands, USA, tends to be fairly consistent with what is to be expected in a tropical climate. The constant temperatures combined with the high probability of rainfall create a humid environment for the island. The sea remains warm throughout this period, inviting for both locals and tourists engaging in water activities. Sunshine hours are relatively lesser compared to upcoming months, matched by a relatively moderate UV index. It is important to note that January sees an average rainfall of 5", represented across an estimated 22 days of the month.

Temperature

Temperature records mark January as the coldest month, with highs averaging 84.2°F and lows at 75.2°F.

Rainfall

In Rota, during January, the rain falls for 22 days and regularly aggregates up to 5.04" of precipitation. In Rota, during the entire year, the rain falls for 247 days and collects up to 94.29" of precipitation.

Ocean temperature

In January, the average ocean temperature is 82.4°F.
Note: For water activities like swimming, diving, and more, temperatures ranging between 77°F and 84.2°F offer superior comfort and enjoyment for lengthy durations.

Daylight

In Rota, the average length of the day in January is 11h and 24min.
On the first day of January, sunrise is at 6:43 am and sunset at 6:01 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:17 pm ChST.

Sunshine

In Rota, the average sunshine in January is 6h.

UV index

The average daily maximum UV index in January is 10. A UV Index estimate of 8 to 10 represents a very high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In January, the maximum UV index of 10 transforms into these recommendations:
Emphasize protection. Neglecting it can lead to swift damage to the skin and eyes. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Despite the overcast weather, sunscreen with SPF of at least 30 should be applied liberally and reapplied often, particularly after swimming or an outdoor workout. Be vigilant! The Sun's UV rays get a boost from sand and water reflections.