September weather forecast
Wake Island, Wake Island, USA

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Weather in September

As Wake Island, USA, welcomes September, a slight decrease in the intensity of rains is felt. September sees a rainfall measurement of 5.1" (130mm), creating a rhythm that is kinder and gentler in nature. The month provides a considerable amount of sunlit hours for outdoor enthusiasts to exploit. The increasingly warm sea, nevertheless, remains a comfort to swimmers. Transitioning into October, the Island anticipates a further reduction in rainfall levels.

Temperature

July through September, when the average high-temperature reaches 88.2°F (31.2°C), are the warmest months.

Rainfall

In Wake Island, in September, it is raining for 19 days, with typically 5.08" (129mm) of accumulated precipitation. In Wake Island, during the entire year, the rain falls for 230 days and collects up to 35.67" (906mm) of precipitation.

Ocean temperature

August through October, with an average ocean temperature of 84.2°F (29°C), are months with the warmest seawater.
Note: Ideal surface water temperatures for any water activity fall between 77°F (25°C) and 84.2°F (29°C), offering maximum enjoyment for lengthened periods.

Daylight

The average length of the day in September is 12h and 15min.
On the first day of the month, sunrise is at 6:38 am and sunset at 7:08 pm. On the last day of September, sunrise is at 6:43 am and sunset at 6:42 pm +12.

Sunshine

In September, the average sunshine in Wake Island is 8h.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index. A UV Index of 11, and more, symbolizes an ultimate health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: In September, an average UV index of 12 transforms into the following instructions:
Execute all crucial precautions. Warding off sun exposure is non-negotiable. 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. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Use liberally and reapply a broad-spectrum SPF 30+ sunscreen every two hours, or straight away after any outdoor workout or swim. Warning! Sand and water reflections boost the intensity of UV exposure.
Updated: Jul 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the hottest?

July through September represent the warmest period, with an average high-temperature of 88.2°F (31.2°C).

How hot is it in September?

In Wake Island, in September, the average high-temperature is 88.2°F (31.2°C), and the average low-temperature is 77.7°F (25.4°C).

How many days does it rain in September?

In September, the rain falls for 19 days. Throughout September, 5.08" (129mm) of precipitation is accumulated.

When is the ocean warmest in Wake Island?

The months with the warmest seawater in Wake Island are August through October, with an average ocean temperature of 84.2°F (29°C).

What is the water temperature in September?

In Wake Island, in September, the average water temperature 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 Wake Island have in September?

In September, the average day length is 12h and 15min.

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 6:38 am and sunset at 7:08 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:42 pm +12.

How many hours of sunshine does Wake Island have in September?

In Wake Island, the average sunshine duration in September is 8h.

What is the month with the highest UV index in Wake Island?

March through September, with an average maximum UV index of 12, are months with the highest UV index.

What is the UV index intensity in September?

In September, the average daily maximum UV index is 12. A UV Index estimate of 11, and higher, represents an extreme health vulnerability from unprotected exposure to UV radiation.
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in September
Wake Island, Wake Island, USA

Average temperature in September - Wake Island, Wake Island, USA
  • Average high temperature in September: 88.2°F

The warmest months (with the highest average high temperature) are July, August and September (88.2°F).
The month with the lowest average high temperature is February (82°F).

  • Average low temperature in September: 77.7°F

The month with the highest average low temperature is September (77.7°F).
The coldest month (with the lowest average low temperature) is February (72.1°F).

Average rainfall in September
Wake Island, Wake Island, USA

Average rainfall in September - Wake Island, Wake Island, USA
  • Average rainfall in September: 5.1"

The wettest month (with the highest rainfall) is August (6.2").
The driest month (with the least rainfall) is January (1.2").

Average rainfall days in September
Wake Island, Wake Island, USA

Average rainfall days in September - Wake Island, Wake Island, USA
  • Average rainfall days in September: 19 days

The month with the highest number of rainy days is January (22 days).
The months with the least rainy days are April, May and June (17 days).

Average sea temperature in September
Wake Island, Wake Island, USA

Average sea temperature in September - Wake Island, Wake Island, USA
  • Average sea temperature in September: 84°F

The best months for swimming (with the highest average sea temperature) are August, September and October (84°F).
The coldest months (with the lowest average sea temperature) are January, February, March and April (79°F).

Average daylight in September /
Average sunshine in September
Wake Island, Wake Island, USA

Average daylight in September / Average sunshine in September - Wake Island, Wake Island, USA
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).

  • Average sunshine in September: 8h

The months with the most sunshine are May and June (Average sunshine: 10h).
The months with the least sunshine are November and December (Average sunshine: 7h).

Average UV index in September
Wake Island, Wake Island, USA

Average UV index in September - Wake Island, Wake Island, USA
  • Average UV index in September: 12

The months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
The months with the lowest UV index are January, November and December (UV index 8).

Wake Island, Wake Island, USA

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