September weather forecast
Saipan, Northern Mariana Islands, USA

September features substantial yet decreasing rainfall in Saipan with the precipitation level at 11.7" (297mm). Comparing temperatures, lows dip slightly to 75°F (23.9°C), while the maximum soars to a stable 83.7°F (28.7°C). The UV index marches confidently at a value of 12, just as in the previous months. October, however, promises a relief from the monsoonal rains headed Saipan's direction.

Temperature

Transitioning into September, Saipan records an average high-temperature of a still warm 83.8°F (28.8°C), almost identical to August's 84°F (28.9°C). The nighttime temperature in September experiences a minor dip, averaging a still warm 75°F (23.9°C).

Rainfall

In Saipan, during September, the rain falls for 19 days and regularly aggregates up to 11.65" (296mm) of precipitation. Throughout the year, in Saipan, Northern Mariana Islands, there are 244 rainfall days, and 83.39" (2118mm) of precipitation is accumulated.

Ocean temperature

The months with the warmest seawater are June through November, with an average ocean temperature of 84.2°F (29°C).
Note: Water temperature ranging between 77°F (25°C) and 84.2°F (29°C) is considered very warm and pleasing for everyone. It allows for enjoyable water activities over extended periods without discomfort.

Daylight

In Saipan, the average length of the day in September is 12h and 13min.
On the first day of the month, sunrise is at 6:04 am and sunset at 6:29 pm. On the last day of September, sunrise is at 6:06 am and sunset at 6:07 pm ChST.

Sunshine

The months with the least sunshine are August through December, with an average of 5h of sunshine.

UV index

February through September, with an average maximum UV index of 12, are months with the highest UV index in Saipan. A UV Index estimate of 11, and higher, represents an extreme threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 12 during September translates into the following recommendations:
Undertake every vital safety procedure, as unprotected skin and eyes could sustain burns in no time. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Apply generously and frequently a broad-spectrum SPF 30+ sunscreen every two hours, or immediately after swimming or any outdoor exercise. Take warning! Reflective sand and water surfaces intensify the Sun's UV rays.