October weather forecastKapaa, HI
October
Weather in October
October imbues Kapaa, Hawaii's weather with a distinctive autumnal feel, while retaining the tropical essence. The slight dip in temperatures offsets the rising humidity. An uptick in rainfall signals the onset of the wet season, however, the decrease in daylight hours is somewhat countered by stable sunshine hours. The fluctuating conditions highlight the dynamic weather in this paradise archipelago.Temperature
Upon the onset of October, Kapaa witnesses an average high-temperature of a still warm 79.5°F (26.4°C), showing a close resemblance to the prior month. Kapaa observes a minimal variance in temperature, with a consistent average low of 75.4°F (24.1°C) during the nights of October.Humidity
June through August, October and December, with an average relative humidity of 77%, are the most humid months.Rainfall
In Kapaa, in October, it is raining for 18.7 days, with typically 2.05" (52mm) of accumulated precipitation. In Kapaa, during the entire year, the rain falls for 218.4 days and collects up to 22.13" (562mm) of precipitation.Ocean temperature
In Kapaa, in October, the average water temperature is 79.5°F (26.4°C).Note: For swimming, diving, and enjoying other water activities, the range of 77°F (25°C) to 84.2°F (29°C) in water temperature is considered ideal, offering pleasure for extended periods without discomfort.
Daylight
In October, the average length of the day is 11h and 38min.On the first day of the month, sunrise is at 6:28 am and sunset at 6:24 pm. On the last day of October, sunrise is at 6:41 am and sunset at 6:00 pm HST.
Sunshine
In October, the average sunshine is 8.4h.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 value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 6 in October interprets into the following recommendations:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be attentive! The UV exposure is heightened with reflections from sand and water.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Kapaa, HI
- Average high temperature in October: 79.5°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 October: 75.4°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 October
Kapaa, HI
- Average pressure in October: 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 October
Kapaa, HI
- Average wind speed in October: 10.5mph
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 October
Kapaa, HI
- Average humidity in October: 77%
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 October
Kapaa, HI
- Average rainfall in October: 2.05"
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 October
Kapaa, HI
- Average rainfall days in October: 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 October
Kapaa, HI
- Average sea temperature in October: 79.5°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 October /
Average sunshine in October
Kapaa, HI
- Average daylight in October: 11h and 36min
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 October: 8h and 24min
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 October
Kapaa, 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 August (2.9 days).
Average UV index in October
Kapaa, 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
Kapaa, HI
- Average cloud cover in October: 40
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 October
Kapaa, 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).
