October weather forecastHaleiwa, HI
October
Weather in October
October, the same as September, is a moderately hot autumn month in Haleiwa, Hawaii, with temperature in the range of an average low of 75.4°F (24.1°C) and an average high of 81.1°F (27.3°C).Temperature
As Haleiwa transitions into October, the average high-temperature stands at a still moderately hot 81.1°F (27.3°C), offering little variation from the preceding month. Haleiwa's nighttime average temperature in October drops marginally from the daytime highs, settling at a still warm 75.4°F (24.1°C).Heat index
In October, the average 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.Take into consideration that the heat index values are calculated for shade and light wind conditions. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a composite of temperature and humidity figures to convey how warm it feels. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Humidity
The average relative humidity in October in Haleiwa is 75%.Rainfall
The months with the most rainfall in Haleiwa are February and October, with an average 1.34" (34mm) of precipitation.Ocean temperature
In October, the average ocean temperature is 79.7°F (26.5°C).Note: Water activities in surface temperatures between 77°F (25°C) and 84.2°F (29°C) are seen as exceptional and extremely agreeable for lengthened time spans.
Daylight
The average length of the day in October in Haleiwa is 11h and 38min.On the first day of the month, sunrise is at 6:23 am and sunset at 6:19 pm. On the last day of October, in Haleiwa, sunrise is at 6:35 am and sunset at 5:56 pm HST.
Sunshine
The average sunshine in October in Haleiwa is 7.8h.UV index
The months with the lowest UV index are January through June, August, October through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: A daily high UV index of 6 in October leads to these guidelines:
Ward off overexposure. Defence against solar harm is crucial. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Attention! The combination of sand and water reflections enhances UV ray intensity.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Haleiwa, HI
- Average high temperature in October: 81.1°F
The warmest month (with the highest average high temperature) is September (81.7°F).
The month with the lowest average high temperature is February (75°F).
- Average low temperature in October: 75.4°F
The months with the highest average low temperature are August and September (75.7°F).
The coldest month (with the lowest average low temperature) is February (68.5°F).
Average pressure in October
Haleiwa, HI
- Average pressure in October: 29.97"Hg
The month with the highest atmospheric pressure is April (30.06"Hg).
The month with the lowest atmospheric pressure is October (29.97"Hg).
Average wind speed in October
Haleiwa, HI
- Average wind speed in October: 9.1mph
The windiest month (with the highest average wind speed) is July (11.6mph).
The calmest month (with the lowest average wind speed) is January (9mph).
Average humidity in October
Haleiwa, 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 May and September (74%).
Average rainfall in October
Haleiwa, HI
- Average rainfall in October: 1.34"
The wettest months (with the highest rainfall) are February and October (1.34").
The driest month (with the least rainfall) is July (0.63").
Average rainfall days in October
Haleiwa, HI
- Average rainfall days in October: 16.4 days
The month with the highest number of rainy days is March (17.7 days).
The month with the least rainy days is January (12.5 days).
Average sea temperature in October
Haleiwa, HI
- Average sea temperature in October: 79.6°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 (75.2°F).
Average daylight in October /
Average sunshine in October
Haleiwa, HI
- Average daylight in October: 11h and 36min
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 48min).
- Average sunshine in October: 7h and 48min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is November (Average sunshine: 6h and 12min).
Average sunshine days in October
Haleiwa, HI
- Average sunshine days in October: 8.3 days
The month with the most sunshine days is January (12.9 days).
The month with the least sunshine days is September (6.5 days).
Average UV index in October
Haleiwa, HI
- Average UV index in October: 6
The months with the highest UV index are July and September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, August, October, November and December (UV index 6).
Average cloud cover in October
Haleiwa, HI
- Average cloud cover in October: 39
The month with the most cloud cover is March (Cloud cover 44).
The months with the least cloud cover are January and September (Cloud cover 37).
Average visibility in October
Haleiwa, 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).
