October weather forecast and climate
Waipahu, HI

Weather in October

October, the same as September, is a moderately hot autumn month in Waipahu, Hawaii, with average temperature fluctuating between 81.1°F (27.3°C) and 74.7°F (23.7°C).

Temperature

In Waipahu, the average high-temperature is relatively the same as in September - a still moderately hot 81.1°F (27.3°C). In October, the average low-temperature is 74.7°F (23.7°C).

Heat index

The average heat index in October is evaluated at 85.8°F (29.9°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. 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 'real feel', 'felt air temperature', 'feels like', or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (metabolic differences, clothing, differences in body mass, height, and shape). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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 Waipahu, the average relative humidity is 75%.

Rainfall

The month with the most rainfall is October when the rain falls for 18.4 days and typically aggregates up to 2.09" (53mm) of precipitation.

Ocean temperature

In October, the average ocean temperature is 79.9°F (26.6°C).
Note: 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.

Daylight

The average length of the day in October is 11.6h.

Sunshine

In Waipahu, the average sunshine is 7.8h.

UV index

January through August, October through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected 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. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for 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. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
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FAQ

What is the temperature in October in Waipahu?

The average high-temperature, in October, is 81.1°F (27.3°C), while the average low-temperature is 74.7°F (23.7°C). The average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, in October is evaluated at 85.8°F (29.9°C).

What is the average humidity in October in Waipahu?

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

What is the rainiest month in Waipahu?

The month with the most rainfall in Waipahu is October when the rain falls for 18.4 days and typically aggregates up to 2.09" (53mm) of precipitation.

How much does it rain in Waipahu in October?

In Waipahu, during October, the rain falls for 18.4 days and regularly aggregates up to 2.09" (53mm) of precipitation.

What is the water temperature in October in Waipahu?

In Waipahu, the average seawater temperature in October is 79.9°F (26.6°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 Waipahu have in October?

In October, the average length of the day is 11.6h.

How long on average sun shines in October in Waipahu?

In October, the average sunshine in Waipahu, Hawaii, is 7.8h.

When is the lowest UV index in Waipahu?

January through August, October through December, with an average maximum UV index of 6, are months with the lowest UV index in Waipahu, Hawaii.

What is the UV index reading in October in Waipahu?

In Waipahu, Hawaii, the average daily maximum UV index in October is 6. A UV Index value of 6 to 7 symbolizes a high health threat from the exposure to the Sun's UV rays.

Average temperature in October
Waipahu, HI

Average temperature in October - Waipahu, HI
  • Average high temperature in October: 81.1°F

The warmest months (with the highest average high temperature) are August and September (82°F).
Months with the lowest average high temperature are February and March (75.4°F).

  • Average low temperature in October: 74.7°F

The month with the highest average low temperature is September (75°F).
The coldest month (with the lowest average low temperature) is February (68°F).

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Average pressure in October
Waipahu, HI

Average pressure in October - Waipahu, HI
  • Average pressure in October: 29.97"

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

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Average wind speed in October
Waipahu, HI

Average wind speed in October - Waipahu, HI
  • Average wind speed in October: 8.5mph

The windiest month (with the highest average wind speed) is July (11.3mph).
The calmest month (with the lowest average wind speed) is January (8.4mph).

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Average humidity in October
Waipahu, HI

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

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

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Average rainfall in October
Waipahu, HI

Average rainfall in October - Waipahu, HI
  • Average rainfall in October: 2.09"

The wettest month (with the highest rainfall) is October (2.09").
The driest month (with the least rainfall) is July (0.71").

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Average rainfall days in October
Waipahu, HI

Average rainfall days in October - Waipahu, HI
  • Average rainfall days in October: 18.4 days

The month with the highest number of rainy days is March (20 days).
The month with the least rainy days is January (13.5 days).

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Average sea temperature in October
Waipahu, HI

Average sea temperature in October - Waipahu, HI
  • Average sea temperature in October: 79.9°F

The best month for swimming (with the highest average sea temperature) is September (80.6°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
Waipahu, HI

Average daylight in October / Average sunshine in October - Waipahu, HI
  • Average daylight in October: 11.6h

The month with the longest days is June (Average daylight: 13.4h).
The month with the shortest days is December (Average daylight: 10.8h).

  • Average sunshine in October: 7.8h

The month with the most sunshine is June (Average sunshine: 9.9h).
Months with the least sunshine are November and December (Average sunshine: 6.3).

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Average sunshine days in October
Waipahu, HI

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

The month with the most sunshine days is January (12.3 days).
The month with the least sunshine days is November (6.2 days).

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Average UV index in October
Waipahu, HI

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

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

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Average cloud cover in October
Waipahu, HI

Average cloud cover in October - Waipahu, HI
  • Average cloud cover in October: 39

The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is January (Cloud cover 36).

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Average visibility in October
Waipahu, HI

Average visibility in October - Waipahu, HI
  • Average visibility in October: 6mi

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

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