Pago Pago
American Samoa, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Pago Pago, AS

Aerial view of Pago Pago Harbour in Pago Pago, American Samoa
Aerial view of Pago Pago Harbour in Pago Pago, American Samoa
September, the first month of the spring, in Pago Pago, is still a warm month, with average temperature fluctuating between 76.8°F (24.9°C) and 85.3°F (29.6°C).

Temperature

In Pago Pago, the average high-temperature is practically the same as in August - a still warm 85.3°F (29.6°C). The average low-temperature, in Pago Pago, is 76.8°F (24.9°C).

Rainfall

In Pago Pago, during September, the rain falls for 17.9 days and regularly aggregates up to 7.6" (193.5mm) of precipitation. In Pago Pago, during the entire year, the rain falls for 250.3 days and collects up to 123.1" (3126.6mm) of precipitation.

Ocean temperature

Months with the coldest seawater in Pago Pago are August and September, with an average ocean temperature of 82°F (27.8°C).
Note: 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.

Daylight

The average length of the day in Pago Pago is 12h.

Sunshine

Months with the most sunshine in Pago Pago are January, February and September, with an average of 6h of sunshine.

UV index

January through April, September through December, with an average maximum UV index of 12, are months with the highest UV index. A UV Index estimate of 11, and higher, represents an extreme health hazard from unsafe exposure to the UV radiation for the average person.
Note: In September, the average maximum UV index of 12 translate into the following recommendations:
Take all required precautions, as unprotected skin and eyes can burn in 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. 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. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in September in Pago Pago?

In Pago Pago, American Samoa, in September, the average high-temperature is 85.3°F (29.6°C), and the average low-temperature is 76.8°F (24.9°C).

How much does it rain in Pago Pago in September?

In Pago Pago, American Samoa, in September, during 17.9 rainfall days, 7.6" (193.5mm) of precipitation is typically accumulated.

What months are the ocean coldest in Pago Pago?

Months with the coldest seawater in Pago Pago, American Samoa, are August and September, with an average ocean temperature of 82°F (27.8°C).

What is the ocean temperature in September in Pago Pago?

In September, the average ocean temperature in Pago Pago, American Samoa, is 82°F (27.8°C). 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.

How many hours of daylight does Pago Pago have in September?

In September, the average length of the day in Pago Pago, American Samoa, is 12h.

What is the month with the most sunshine in Pago Pago?

January, February and September, with an average of 6h of sunshine, are months with the most sunshine in Pago Pago.

How long on average sun shines in September in Pago Pago?

In September, the average sunshine in Pago Pago, American Samoa, is 6h.

When is the highest UV index in Pago Pago?

January through April, September through December, with an average maximum UV index of 12, are months with the highest UV index in Pago Pago.

What is the UV index reading in September in Pago Pago?

In September, the average daily maximum UV index is 12. A UV Index value of 11, and more, symbolizes an excessive health risk from the exposure to the Sun's UV rays.
Average temperature in September - Pago Pago, AS
  • Average high temperature in September: 85.3°F

The warmest month (with the highest average high temperature) is March (88.1°F).
The month with the lowest average high temperature is July (84.2°F).

  • Average low temperature in September: 76.9°F

The month with the highest average low temperature is March (77.8°F).
The coldest month (with the lowest average low temperature) is August (76.5°F).

Average rainfall in September - Pago Pago, AS
  • Average rainfall in September: 7.6"

The wettest month (with the highest rainfall) is January (14.8").
The driest month (with the lowest rainfall) is June (6").

Average rainfall days in September - Pago Pago, AS
  • Average rainfall days in September: 17.9 days

The month with the highest number of rainy days is January (24 days).
The month with the lowest number of rainy days is August (17.8 days).

Average sea temperature in September - Pago Pago, AS
  • Average sea temperature in September: 82°F

The best month for swimming (with the highest average sea temperature) is March (85.4°F).
Coldest months (with the lowest average sea temperature) are August and September (82°F).

Average daylight in September / Average sunshine in September - Pago Pago, AS
  • Average daylight in September: 12h

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

  • Average sunshine in September: 6h

Months with most sunshine are January, February and September (Average sunshine: 6h).
Months with least sunshine are April, May and June (Average sunshine: 4).

Average UV index in September - Pago Pago, AS
  • Average UV index in September: 12

Months with the highest UV index are January, February, March, April, September, October, November and December (UV index 12).
Months with the lowest UV index are June and July (UV index 8).