October weather forecast
Aiea, HI

Weather in October

October, the same as September, is another warm autumn month in Aiea, Hawaii, with an average temperature ranging between max 81°F (27.2°C) and min 75.6°F (24.2°C).

Temperature

In Aiea, the average high-temperature in October is practically the same as in September - a still warm 81°F (27.2°C). In October, the average low-temperature is 75.6°F (24.2°C).

Heat index

In October, the average heat index is calculated to be 85.5°F (29.7°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'apparent temperature', 'feels like', or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like activity, clothing, wind, and differences in body mass, height, and shape affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In Aiea, the average relative humidity in October is 75%.

Rainfall

The months with the most rainfall are March and October, with an average 1.81" (46mm) of precipitation.

Ocean temperature

In Aiea, the average seawater temperature in October is 80.1°F (26.7°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

In October, the average length of the day in Aiea, Hawaii, is 11h and 39min.
On the first day of October, sunrise is at 6:22 am and sunset at 6:19 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 5:56 pm HST.

Sunshine

In Aiea, the average sunshine in October is 8.2h.

UV index

January through June, October through December, with an average maximum UV index of 6, are months with the lowest UV index in Aiea. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 6 in October interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. 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. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the temperature in October in Aiea?

In October, in Aiea, the average high-temperature is 81°F (27.2°C), and the average low-temperature is 75.6°F (24.2°C). In October, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is calculated to be 85.5°F (29.7°C).

What is the average humidity in October in Aiea?

In Aiea, Hawaii, the average relative humidity in October is 75%.

What is the rainiest month in Aiea?

The months with the most rainfall in Aiea are March and October, with an average 1.81" (46mm) of precipitation.

How many days does it rain in October in Aiea?

In Aiea, Hawaii, in October, during 18 rainfall days, 1.81" (46mm) of precipitation is typically accumulated.

What is the water temperature in October in Aiea?

In Aiea, Hawaii, in October, the average water temperature is 80.1°F (26.7°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.

What is the average length of the day in October in Aiea?

In October, the average day length is 11h and 39min.

What time are sunrise and sunset in October in Aiea?

In October, on the first day of the month, sunrise is at 6:22 am and sunset at 6:19 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 5:56 pm HST.

How long on average sun shines in October in Aiea?

The average sunshine duration in October in Aiea is 8.2h.

What are the months with the lowest UV index in Aiea?

The months with the lowest UV index are January through June, October through December, with an average maximum UV index of 6.

How high is the UV index in October in Aiea?

In October, the average daily maximum UV index in Aiea is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to Sun's UV rays.

Average temperature in October
Aiea, HI

Average temperature in October - Aiea, HI
  • Average high temperature in October: 81°F

The warmest month (with the highest average high temperature) is September (81.5°F).
The months with the lowest average high temperature are February and March (75°F).

  • Average low temperature in October: 75.6°F

The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is February (69.1°F).

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Average pressure in October
Aiea, HI

Average pressure in October - Aiea, HI
  • Average pressure in October: 29.97"Hg

The month with the highest atmospheric pressure is April (30.06"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).

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Average wind speed in October
Aiea, HI

Average wind speed in October - Aiea, HI
  • Average wind speed in October: 9.2mph

The windiest month (with the highest average wind speed) is July (12.1mph).
The calmest month (with the lowest average wind speed) is January (9mph).

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Average humidity in October
Aiea, HI

Average humidity in October - Aiea, HI
  • Average humidity in October: 75%

The months with the highest relative humidity are February and December (76%).
The months with the lowest relative humidity are April, May, September and November (74%).

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Average rainfall in October
Aiea, HI

Average rainfall in October - Aiea, HI
  • Average rainfall in October: 1.81"

The wettest months (with the highest rainfall) are March and October (1.81").
The driest month (with the least rainfall) is July (0.67").

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Average rainfall days in October
Aiea, HI

Average rainfall days in October - Aiea, HI
  • Average rainfall days in October: 18 days

The months with the highest number of rainy days are March and October (18 days).
The month with the least rainy days is January (12.6 days).

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Average sea temperature in October
Aiea, HI

Average sea temperature in October - Aiea, HI
  • Average sea temperature in October: 80°F

The best month for swimming (with the highest average sea temperature) is September (80.4°F).
The coldest month (with the lowest average sea temperature) is March (75.7°F).

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Average daylight in October /
Average sunshine in October
Aiea, HI

Average daylight in October / Average sunshine in October - Aiea, HI
  • Average daylight in October: 11h and 39min

The month with the longest days is June (Average daylight: 13h and 25min).
The month with the shortest days is December (Average daylight: 10h and 52min).

  • Average sunshine in October: 8h and 12min

The month with the most sunshine is June (Average sunshine: 10h and 48min).
The months with the least sunshine are November and December (Average sunshine: 6h and 30min).

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Average sunshine days in October
Aiea, HI

Average sunshine days in October - Aiea, HI
  • Average sunshine days in October: 6.3 days

The month with the most sunshine days is January (12.8 days).
The month with the least sunshine days is October (6.3 days).

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Average UV index in October
Aiea, HI

Average UV index in October - Aiea, HI
  • Average UV index in October: 6

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

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Average cloud cover in October
Aiea, HI

Average cloud cover in October - Aiea, HI
  • Average cloud cover in October: 36

The month with the most cloud cover is March (Cloud cover 40).
The months with the least cloud cover are January and September (Cloud cover 33).

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Average visibility in October
Aiea, HI

Average visibility in October - Aiea, HI
  • Average visibility in October: 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).

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