October weather forecast
Pearl City, HI

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Weather in October

Pearl City transitions into the colder part of the year in October. A significant change in the weather is the increase in rainfall making October the wettest month with an average of around 2.09" (53mm). The temperatures start to descend from their summer highs while still remaining quite warm. Although the hours of sunlight reduce, they still remain substantial enough to allow for pleasant day outings. Despite the beginning of this transition, the weather largely maintains its warm and comfortable nature.

Temperature

Pearl City marks the start of October with an average high-temperature of a still moderately hot 81.1°F (27.3°C), hinting at a slight fluctuation from September's 82°F (27.8°C). Nighttime, during October, brings an average low of 74.7°F (23.7°C), a modest reduction from the day's peak.

Heat index

During October, the heat index is evaluated at a tropical 86°F (30°C). With ongoing exposure and activity, one might experience weariness, and heat cramps could ensue.
Heat index values are typically calculated for conditions of shade and a light breeze. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.

Humidity

The average relative humidity in October is 75%.

Rainfall

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

Ocean temperature

In October, the average ocean temperature in Pearl City is 80.1°F (26.7°C).
Note: For water activities like swimming, diving, and more, temperatures ranging between 77°F (25°C) and 84.2°F (29°C) offer superior comfort and enjoyment for lengthy durations.

Daylight

The average length of the day in October is 11h and 38min.
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 6:34 am and sunset at 5:56 pm HST.

Sunshine

In Pearl City, the average sunshine in October 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 in Pearl City, Hawaii. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: In October, an average UV index of 6 transforms into the following instructions:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. 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. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Note! Reflective surfaces like sand and water heighten the UV radiation levels.
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Frequently asked questions

What is the temperature in October in Pearl City?

The high-temperature in Pearl City, Hawaii, during October is 81.1°F (27.3°C) and the low-temperature is 74.7°F (23.7°C). The average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, in October is evaluated at 86°F (30°C).

What is the average humidity in October in Pearl City?

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

What is the rainiest month in Pearl City?

The month with the most rainfall in Pearl City, Hawaii, 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 Pearl City in October?

In October, in Pearl City, the rain falls for 18.4 days. Throughout October, 2.09" (53mm) of precipitation is accumulated.

What is the water temperature in October in Pearl City?

In Pearl City, in October, the average water temperature is 80.1°F (26.7°C). Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Pearl City have in October?

In October, the average day length in Pearl City is 11h and 38min.

When are sunrise and sunset in October in Pearl City?

In October, on the first day of the month, sunrise is at 6:23 am and sunset at 6:19 pm. On the last day of the month, in Pearl City, Hawaii, sunrise is at 6:34 am and sunset at 5:56 pm HST.

How long on average sun shines in October in Pearl City?

The average sunshine duration in October in Pearl City, Hawaii, is 7.8h.

What is the month with the lowest UV index in Pearl City?

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

What is the UV index reading in October in Pearl City?

The average daily maximum UV index in October in Pearl City, Hawaii, is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Pearl City, HI

Average temperature in October - Pearl City, 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).

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Average pressure in October
Pearl City, HI

Average pressure in October - Pearl City, 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
Pearl City, HI

Average wind speed in October - Pearl City, 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
Pearl City, HI

Average humidity in October - Pearl City, 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%).

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Average rainfall in October
Pearl City, HI

Average rainfall in October - Pearl City, 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
Pearl City, HI

Average rainfall days in October - Pearl City, 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
Pearl City, HI

Average sea temperature in October - Pearl City, 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
Pearl City, HI

Average daylight in October / Average sunshine in October - Pearl City, 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).

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Average sunshine days in October
Pearl City, HI

Average sunshine days in October - Pearl City, 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
Pearl City, HI

Average UV index in October - Pearl City, 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).

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Average cloud cover in October
Pearl City, HI

Average cloud cover in October - Pearl City, 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
Pearl City, HI

Average visibility in October - Pearl City, 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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Pearl City, Hawaii, USA

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