July weather forecastPapaikou, HI
July
Weather in July
July, like June, in Papaikou, Hawaii, is a moderately hot summer month, with an average temperature varying between 68.4°F (20.2°C) and 74.7°F (23.7°C).Temperature
Papaikou records a slight change with July's average high-temperatures adjusting to a still moderately hot 74.7°F (23.7°C) from June's 73.6°F (23.1°C). July nighttime temperatures hover close to the daytime peak with an average of 68.4°F (20.2°C).Humidity
The months with the lowest humidity are January, May through July, with an average relative humidity of 78%.Rainfall
In July, in Papaikou, the rain falls for 17.8 days. Throughout July, 1.61" (41mm) of precipitation is accumulated. Throughout the year, there are 227.7 rainfall days, and 27.83" (707mm) of precipitation is accumulated.Ocean temperature
In Papaikou, in July, the average water temperature is 78.4°F (25.8°C).Note: Water activities in temperatures ranging from 77°F (25°C) to 84.2°F (29°C) are pleasurable, without feeling uncomfortable even during extended periods.
Daylight
In Papaikou, the average length of the day in July is 13h and 11min.On the first day of the month, sunrise is at 5:45 am and sunset at 7:03 pm. On the last day of July, sunrise is at 5:56 am and sunset at 6:57 pm HST.
Sunshine
In July, the average sunshine is 10.7h.UV index
The months with the highest UV index are May through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: A daily high UV index of 6 in July leads to these guidelines:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. 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 July
Papaikou, HI
- Average high temperature in July: 74.7°F
The warmest month (with the highest average high temperature) is August (75.4°F).
The month with the lowest average high temperature is March (69.6°F).
- Average low temperature in July: 68.4°F
The month with the highest average low temperature is September (70°F).
The coldest month (with the lowest average low temperature) is March (64°F).
Average pressure in July
Papaikou, HI
- Average pressure in July: 30"Hg
The month with the highest atmospheric pressure is April (30.05"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).
Average wind speed in July
Papaikou, HI
- Average wind speed in July: 7.1mph
The windiest month (with the highest average wind speed) is August (7.6mph).
The calmest month (with the lowest average wind speed) is October (6.7mph).
Average humidity in July
Papaikou, HI
- Average humidity in July: 78%
The month with the highest relative humidity is March (80%).
The months with the lowest relative humidity are January, May, June and July (78%).
Average rainfall in July
Papaikou, HI
- Average rainfall in July: 1.61"
The wettest month (with the highest rainfall) is February (3.78").
The driest month (with the least rainfall) is June (1.1").
Average rainfall days in July
Papaikou, HI
- Average rainfall days in July: 17.8 days
The month with the highest number of rainy days is March (22.9 days).
The month with the least rainy days is January (13.3 days).
Average sea temperature in July
Papaikou, HI
- Average sea temperature in July: 78.4°F
The best month for swimming (with the highest average sea temperature) is September (79.3°F).
The coldest month (with the lowest average sea temperature) is March (75.7°F).
Average daylight in July /
Average sunshine in July
Papaikou, HI
- Average daylight in July: 13h and 12min
The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).
- Average sunshine in July: 10h and 42min
The month with the most sunshine is June (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in July
Papaikou, HI
- Average sunshine days in July: 3.2 days
The month with the most sunshine days is January (12.1 days).
The month with the least sunshine days is August (1.8 days).
Average UV index in July
Papaikou, HI
- Average UV index in July: 6
The months with the highest UV index are May, June, July, August, September, October, November and December (UV index 6).
The months with the lowest UV index are January, February, March and April (UV index 5).
Average cloud cover in July
Papaikou, HI
- Average cloud cover in July: 32
The month with the most cloud cover is March (Cloud cover 42).
The month with the least cloud cover is January (Cloud cover 26).
Average visibility in July
Papaikou, HI
- Average visibility in July: 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).





