October weather forecast
Waipahu, HI

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Weather in October

October brings a further slight decrease in temperatures in Waipahu, Hawaii, with the highest reading being 81.1°F (27.3°C). This month marks a departure from summer towards more autumnal weather, which affects the amount of rainfall measured. The wxperienced weather patterns record increasing rainfall, with October receiving an average of 2.09" (53mm). Despite the cooler temperatures, the water remains pleasantly warm, encouraging tourists and locals to engage in beach activities. It's worth mentioning that the amount of daylight begins to lessen, signaling the onset of shorter days.

Temperature

As Waipahu welcomes October, the average high-temperature is noted at a still warm 81.1°F (27.3°C), closely aligning with the preceding month. October's average low temperature is a still warm 74.7°F (23.7°C), displaying a subtle drop from its daily peak.

Heat index

The average heat index in October is computed to be a tropical 86°F (30°C). If one endures exposure and continues to be active, it might result in tiredness and heat cramps.
Heat index data is primarily for areas with shade and subjected to light winds. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.

Humidity

In October, the average relative humidity is 75%.

Rainfall

October is the month with the most rainfall. Rain falls for 18.4 days and accumulates 2.09" (53mm) of precipitation.

Ocean temperature

In Waipahu, the average seawater temperature in October is 79.9°F (26.6°C).
Note: Water temperature ranging between 77°F (25°C) and 84.2°F (29°C) is considered very warm and pleasing for everyone. It allows for enjoyable water activities over extended periods without discomfort.

Daylight

In Waipahu, the average length of the day in October is 11h and 39min.
On the first day of October in Waipahu, sunrise is at 6:23 am and sunset at 6:19 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 5:56 pm HST.

Sunshine

In October, the average sunshine is 7.8h.

UV index

The months with the lowest UV index are January through August, October through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the average person.
Note: The UV index of 6 during October translates into the following guidance:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Stay aware! UV radiation is magnified when reflecting off sand and water.
Updated: Jun 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Waipahu in October?

During October, Waipahu experiences an average high-temperature of 81.1°F (27.3°C) and a low-temperature of 74.7°F (23.7°C). In October, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 86°F (30°C).

What is the average humidity in October?

The average relative humidity in October is 75%.

What is the wettest month?

October is the month with the most rainfall. Rain falls for 18.4 days and accumulates 2.09" (53mm) of precipitation.

How much does it rain in October?

In Waipahu, in October, it is raining for 18.4 days, with typically 2.09" (53mm) of accumulated precipitation.

How warm is the water in October in Waipahu?

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

The average day length in October is 11h and 39min.

When is the sunrise / sunset in October?

On the first day of October, sunrise is at 6:23 am and sunset at 6:19 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 5:56 pm HST.

How many hours of sunshine does Waipahu have in October?

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

What is the month with 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.

What is the UV index reading in October?

The average daily maximum UV index in October is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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).
The 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).

Average pressure in October
Waipahu, HI

Average pressure in October - Waipahu, 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).

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).

Average humidity in October
Waipahu, HI

Average humidity in October - Waipahu, 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, June and September (74%).

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").

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).

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).

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

Average daylight in October / Average sunshine in October - Waipahu, HI
  • Average daylight in October: 11h and 4min

The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 54min).

  • Average sunshine in October: 7h and 5min

The month with the most sunshine is June (Average sunshine: 9h and 54min).
The months with the least sunshine are November and December (Average sunshine: 6h and 18min).

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).

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).
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 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).

Average visibility in October
Waipahu, HI

Average visibility in October - Waipahu, 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).

Waipahu, Hawaii, USA

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