September weather forecast
Anahola, HI

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Weather in September

The first month of the autumn, September, is still a warm month in Anahola, Hawaii, with an average temperature varying between 75.9°F (24.4°C) and 79.7°F (26.5°C).

Temperature

September stands out as Anahola's warmest month, with an average high-temperature of 79.7°F (26.5°C) and a low-temperature of 75.9°F (24.4°C).

Humidity

In Anahola, the average relative humidity in September is 76%.

Rainfall

In Anahola, during September, the rain falls for 18.7 days and regularly aggregates up to 1.54" (39mm) of precipitation. In Anahola, Hawaii, during the entire year, the rain falls for 218.4 days and collects up to 22.13" (562mm) of precipitation.

Ocean temperature

The month with the warmest seawater is September, with an average ocean temperature of 80.2°F (26.8°C).
Note: Water temperatures between 77°F (25°C) and 84.2°F (29°C) are ideal for all water activities, offering enjoyment without causing discomfort over extended periods.

Daylight

In September, the average length of the day is 12h and 16min.
On the first day of the month, sunrise is at 6:20 am and sunset at 6:53 pm. On the last day of September, sunrise is at 6:28 am and sunset at 6:25 pm HST.

Sunshine

In Anahola, Hawaii, the average sunshine in September is 8.7h.

UV index

The month with the highest UV index is September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 7 during September morphs into the following directions:
Deter overexposure. Protecting against the sun's effects is essential. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Warning! Sand and water reflections boost the intensity of UV exposure.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the hottest time of year in Anahola?

September is the month when Anahola's temperatures reach their peak, with averages of 79.7°F (26.5°C) and lows of 75.9°F (24.4°C).

What are September temperatures in Anahola?

The average high-temperature and low-temperature during September are 79.7°F (26.5°C) and 75.9°F (24.4°C) respectively.

What is the average humidity in September in Anahola?

In Anahola, the average relative humidity in September is 76%.

How many days does it rain in September in Anahola?

In Anahola, Hawaii, in September, during 18.7 rainfall days, 1.54" (39mm) of precipitation is typically accumulated.

What month is the ocean warmest in Anahola?

The month with the warmest seawater is September, with an average ocean temperature of 80.2°F (26.8°C).

How warm is the water in September in Anahola?

In September, the average ocean temperature is 80.2°F (26.8°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.

What is the average length of the day in September in Anahola?

The average day length in September in Anahola, Hawaii, is 12h and 16min.

What time are sunrise and sunset in September in Anahola?

In September, on the first day of the month, sunrise is at 6:20 am and sunset at 6:53 pm. On the last day of the month, in Anahola, Hawaii, sunrise is at 6:28 am and sunset at 6:25 pm HST.

How long on average sun shines in September in Anahola?

In September, the average sunshine duration in Anahola is 8.7h.

What is the month with the highest UV index in Anahola?

With an average maximum UV index of 7, September is the month with the highest UV index in Anahola, Hawaii.

What is the UV index intensity in September in Anahola?

In Anahola, the average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health threat from unprotected exposure to UV radiation.

Average temperature in September
Anahola, HI

Average temperature in September - Anahola, HI
  • Average high temperature in September: 79.7°F

The warmest month (with the highest average high temperature) is September (79.7°F).
The months with the lowest average high temperature are February and March (73.2°F).

  • Average low temperature in September: 75.9°F

The month with the highest average low temperature is September (75.9°F).
The coldest month (with the lowest average low temperature) is February (68.5°F).

Average pressure in September
Anahola, HI

Average pressure in September - Anahola, HI
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is April (30.07"Hg).
The months with the lowest atmospheric pressure are September and October (29.98"Hg).

Average wind speed in September
Anahola, HI

Average wind speed in September - Anahola, HI
  • Average wind speed in September: 11.1mph

The windiest month (with the highest average wind speed) is July (12.3mph).
The calmest month (with the lowest average wind speed) is January (10mph).

Average humidity in September
Anahola, HI

Average humidity in September - Anahola, HI
  • Average humidity in September: 76%

The months with the highest relative humidity are June, July, August, October and December (77%).
The month with the lowest relative humidity is January (75%).

Average rainfall in September
Anahola, HI

Average rainfall in September - Anahola, HI
  • Average rainfall in September: 1.54"

The wettest month (with the highest rainfall) is March (2.52").
The driest month (with the least rainfall) is April (1.3").

Average rainfall days in September
Anahola, HI

Average rainfall days in September - Anahola, HI
  • Average rainfall days in September: 18.7 days

The month with the highest number of rainy days is August (21.1 days).
The month with the least rainy days is January (12.5 days).

Average sea temperature in September
Anahola, HI

Average sea temperature in September - Anahola, HI
  • Average sea temperature in September: 80.2°F

The best month for swimming (with the highest average sea temperature) is September (80.2°F).
The coldest month (with the lowest average sea temperature) is March (74.8°F).

Average daylight in September /
Average sunshine in September
Anahola, HI

Average daylight in September / Average sunshine in September - Anahola, HI
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 13h and 30min).
The month with the shortest days is December (Average daylight: 10h and 48min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is June (Average sunshine: 9h and 42min).
The month with the least sunshine is November (Average sunshine: 6h and 12min).

Average sunshine days in September
Anahola, HI

Average sunshine days in September - Anahola, HI
  • Average sunshine days in September: 5.3 days

The month with the most sunshine days is January (12.8 days).
The month with the least sunshine days is August (2.9 days).

Average UV index in September
Anahola, HI

Average UV index in September - Anahola, HI
  • Average UV index in September: 7

The month with the highest UV index is September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, October, November and December (UV index 6).

Average cloud cover in September
Anahola, HI

Average cloud cover in September - Anahola, HI
  • Average cloud cover in September: 38

The month with the most cloud cover is March (Cloud cover 47).
The months with the least cloud cover are January and September (Cloud cover 38).

Average visibility in September
Anahola, HI

Average visibility in September - Anahola, HI
  • Average visibility in September: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Anahola, Hawaii, USA

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