September weather forecast
Midway Atoll, Midway Island, USA

Weather in September

September, the first month of the autumn in Midway Atoll, is also a moderately hot month, with an average temperature varying between 84°F (28.9°C) and 75°F (23.9°C).

Temperature

August and September, with an average high-temperature of 84°F (28.9°C), are the warmest months.

Rainfall

In September, the rain falls for 15 days. Throughout September, 3.5" (89mm) of precipitation is accumulated. In Midway Atoll, during the entire year, the rain falls for 160 days and collects up to 41.3" (1049mm) of precipitation.

Ocean temperature

The months with the warmest seawater in Midway Atoll are August and September, with an average ocean temperature of 80.6°F (27°C).
Note: Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

The average length of the day in September in Midway Atoll is 12h and 19min.
On the first day of September, sunrise is at 6:28 am and sunset at 7:10 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 6:36 pm SST.

Sunshine

The months with the most sunshine in Midway Atoll, Midway Island, are July, September and October, with an average of 18h of sunshine.

UV index

In September, the average daily maximum UV index in Midway Atoll is 10. A UV Index reading of 8 to 10 represents a very high threat to health from exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 10 in September transform into the following instructions:
Take extra precautions. Fair-skinned individuals may get burned in less than 10 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. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. 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 reflection of water and sand dramatically increases exposure to the UV rays.
[Resources]

FAQ

What are the warmest months in Midway Atoll?

Warmest months in Midway Atoll are August and September, with an average high-temperature of 84°F (28.9°C).

What is the temperature in September in Midway Atoll?

In September, in Midway Atoll, the average high-temperature is 84°F (28.9°C), and the average low-temperature is 75°F (23.9°C).

How much does it rain in Midway Atoll in September?

In Midway Atoll, in September, it is raining for 15 days, with typically 3.5" (89mm) of accumulated precipitation.

When is the ocean warmest in Midway Atoll?

The months with the warmest seawater are August and September, with an average ocean temperature of 80.6°F (27°C).

How warm is the water in September in Midway Atoll?

In Midway Atoll, Midway Island, in September, the average water temperature is 80.6°F (27°C). Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the average length of the day in September in Midway Atoll?

The average day length in September in Midway Atoll is 12h and 19min.

When is the sunrise / sunset in September in Midway Atoll?

On the first day of September in Midway Atoll, sunrise is at 6:28 am and sunset at 7:10 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 6:36 pm SST.

What are the months with the most sunshine in Midway Atoll?

The months with the most sunshine in Midway Atoll are July, September and October, with an average of 18h of sunshine.

How many hours of sunshine does Midway Atoll have in September?

In September, the average sunshine duration in Midway Atoll, Midway Island, is 18h.

What is the UV index intensity in September in Midway Atoll?

In Midway Atoll, the average daily maximum UV index in September is 10. A UV Index value of 8 to 10 symbolizes a very high health vulnerability from unprotected exposure to UV radiation.
Average rainfall days
Average sunshine
Average UV index

Average temperature in September
Midway Atoll, Midway Island, USA

Average temperature in September - Midway Atoll, Midway Island, USA
  • Average high temperature in September: 84°F

The warmest months (with the highest average high temperature) are August and September (84°F).
The months with the lowest average high temperature are January and February (70°F).

  • Average low temperature in September: 75°F

The months with the highest average low temperature are July, August and September (75°F).
The coldest months (with the lowest average low temperature) are January and February (62°F).

[Resources]

Average rainfall in September
Midway Atoll, Midway Island, USA

Average rainfall in September - Midway Atoll, Midway Island, USA
  • Average rainfall in September: 3.5"

The wettest month (with the highest rainfall) is January (5").
The driest month (with the least rainfall) is June (2.2").

[Resources]

Average rainfall days in September
Midway Atoll, Midway Island, USA

Average rainfall days in September - Midway Atoll, Midway Island, USA
  • Average rainfall days in September: 15 days

The months with the highest number of rainy days are January and December (16 days).
The months with the least rainy days are May and June (9 days).

[Resources]

Average sea temperature in September
Midway Atoll, Midway Island, USA

Average sea temperature in September - Midway Atoll, Midway Island, USA
  • Average sea temperature in September: 81°F

The best months for swimming (with the highest average sea temperature) are August and September (81°F).
The coldest months (with the lowest average sea temperature) are January, February and March (68°F).

[Resources]

Average daylight in September /
Average sunshine in September
Midway Atoll, Midway Island, USA

Average daylight in September / Average sunshine in September - Midway Atoll, Midway Island, USA
  • Average daylight in September: 12h and 19min

The month with the longest days is June (Average daylight: 13h and 55min).
The month with the shortest days is December (Average daylight: 10h and 23min).

  • Average sunshine in September: 18h

The months with the most sunshine are July, September and October (Average sunshine: 18h).
The months with the least sunshine are January and February (Average sunshine: 14h).

[Resources]

Average UV index in September
Midway Atoll, Midway Island, USA

Average UV index in September - Midway Atoll, Midway Island, USA
  • Average UV index in September: 10

The months with the highest UV index are June, July and August (UV index 11).
The months with the lowest UV index are January and December (UV index 5).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location