Rota
Northern Mariana Islands, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Rota, Northern Mariana Islands, USA

September, the first month of the autumn, in Rota, is also a hot month, with average temperature varying between 87.8°F (31°C) and 77°F (25°C).

Temperature

The warmest months are April through November, with an average high-temperature of 87.8°F (31°C).

Rainfall

In September, the rain falls for 20 days. Throughout September, 13.6" (345mm) of precipitation is accumulated. Throughout the year, in Rota, there are 247 rainfall days, and 94.3" (2395mm) of precipitation is accumulated.

Ocean temperature

June through November, with an average ocean temperature of 84.2°F (29°C), are months with the warmest seawater in Rota.
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.

Daylight

The average length of the day in Rota, Northern Mariana Islands, is 12.2h.

Sunshine

In Rota, the average sunshine in September is 5h.

UV index

Months with the highest UV index in Rota are February through September, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an ultimate health vulnerability from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 12 transform into the following instructions:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the warmest month in Rota?

Warmest months in Rota are April through November, with an average high-temperature of 87.8°F (31°C).

What is the temperature in September in Rota?

The average high-temperature, in September, in Rota, Northern Mariana Islands, is 87.8°F (31°C), while the average low-temperature is 77°F (25°C).

How much does it rain in Rota in September?

In Rota, during September, the rain falls for 20 days and regularly aggregates up to 13.6" (345mm) of precipitation.

When is the ocean warmest in Rota?

June through November, with an average ocean temperature of 84.2°F (29°C), are months with the warmest seawater.

How warm is the water in September in Rota?

In Rota, the average seawater temperature in September is 84.2°F (29°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.

How many hours of daylight does Rota have in September?

The average length of the day in September in Rota, Northern Mariana Islands, is 12.2h.

How long on average sun shines in September in Rota?

In September, the average sunshine in Rota is 5h.

When is the highest UV index in Rota?

February through September, with an average maximum UV index of 12, are months with the highest UV index in Rota, Northern Mariana Islands.

What is the UV index intensity in September in Rota?

The average daily maximum UV index in September is 12. A UV Index value of 11, and more, symbolizes an excessive health risk from unprotected exposure to the UV radiation.
Average temperature in September - Rota, Northern Mariana Islands, USA
  • Average high temperature in September: 88°F

Warmest months (with the highest average high temperature) are April, May, June, July, August, September, October and November (88°F).
The month with the lowest average high temperature is January (84°F).

  • Average low temperature in September: 77°F

Months with the highest average low temperature are May, June, July, August, September, October and November (77°F).
Coldest months (with the lowest average low temperature) are January, February, March, April and December (75°F).

Average rainfall in September - Rota, Northern Mariana Islands, USA
  • Average rainfall in September: 13.6"

The wettest month (with the highest rainfall) is August (14.4").
The driest month (with the lowest rainfall) is March (3.5").

Average rainfall days in September - Rota, Northern Mariana Islands, USA
  • Average rainfall days in September: 20 days

The month with the highest number of rainy days is August (23 days).
The month with the lowest number of rainy days is April (18 days).

Average sea temperature in September - Rota, Northern Mariana Islands, USA
  • Average sea temperature in September: 84°F

Best months for swimming (with the highest average sea temperature) are June, July, August, September, October and November (84°F).
Coldest months (with the lowest average sea temperature) are February and March (81°F).

Average daylight in September / Average sunshine in September - Rota, Northern Mariana Islands, USA
  • Average daylight in September: 12.2h

The month with the longest days is June (Average daylight: 13h).
The month with shortest days is December (Average daylight: 11.3h).

  • Average sunshine in September: 5h

Months with most sunshine are March, April, May and June (Average sunshine: 7h).
The month with least sunshine is October (Average sunshine: 4h).

Average UV index in September - Rota, Northern Mariana Islands, USA
  • Average UV index in September: 12

Months with the highest UV index are February, March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 9).