July weather forecastKailua, HI
July
Weather in July
July's weather in Kailua brings the highest recorded temperature extending to a high of 79.7°F (26.5°C). Interestingly, rainfall drops to 0.55" (14mm), a stark contrast to the past values, underlining July as the driest month of the year. The wind remains gusty, offering gentle sea breezes throughout the day. Regardless of potentially stronger sunshine, the UV index sees an increase to only 7. Despite the peak summertime, the pressures remain consistent with past months.Temperature
The transition into July in Kailua is marked with an average high-temperature of a still moderately hot 79.7°F (26.5°C), showing an insignificant shift from June's 78.4°F (25.8°C). Kailua, during July nights, records a temperature marginally cooler than the daytime average, at a still moderately hot 76.6°F (24.8°C).Humidity
The months with the highest humidity in Kailua are April, June through August and December, with an average relative humidity of 76%.Rainfall
The month with the least rainfall in Kailua, Hawaii, is July, when the rain falls for 11.8 days and typically collects 0.55" (14mm) of precipitation.Ocean temperature
In Kailua, in July, the average water temperature is 79.2°F (26.2°C).Note: 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.
Daylight
In July, the average length of the day is 13h and 17min.On the first day of July, sunrise is at 5:52 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 6:04 am and sunset at 7:10 pm HST.
Sunshine
The average sunshine in July in Kailua is 10.4h.UV index
The months with the highest UV index are July through October, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 7 in July translates into this advice:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Alert! The Sun's UV rays are heightened by the reflection of sand and water.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Kailua, HI
- Average high temperature in July: 79.7°F
The warmest month (with the highest average high temperature) is September (80.6°F).
The month with the lowest average high temperature is February (74.5°F).
- Average low temperature in July: 76.6°F
The months with the highest average low temperature are September and October (77°F).
The coldest month (with the lowest average low temperature) is February (70.5°F).
Average pressure in July
Kailua, HI
- Average pressure in July: 30.01"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 July
Kailua, HI
- Average wind speed in July: 14.1mph
The windiest month (with the highest average wind speed) is July (14.1mph).
The calmest month (with the lowest average wind speed) is January (10.7mph).
Average humidity in July
Kailua, HI
- Average humidity in July: 76%
The months with the highest relative humidity are April, June, July, August and December (76%).
The months with the lowest relative humidity are January and November (74%).
Average rainfall in July
Kailua, HI
- Average rainfall in July: 0.55"
The wettest month (with the highest rainfall) is March (1.69").
The driest month (with the least rainfall) is July (0.55").
Average rainfall days in July
Kailua, HI
- Average rainfall days in July: 11.8 days
The month with the highest number of rainy days is March (16.9 days).
The month with the least rainy days is June (11.3 days).
Average sea temperature in July
Kailua, HI
- Average sea temperature in July: 79.1°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).
Average daylight in July /
Average sunshine in July
Kailua, HI
- Average daylight in July: 13h and 18min
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 July: 10h and 24min
The month with the most sunshine is June (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in July
Kailua, HI
- Average sunshine days in July: 12.8 days
The month with the most sunshine days is June (13.6 days).
The months with the least sunshine days are March and November (6.6 days).
Average UV index in July
Kailua, HI
- Average UV index in July: 7
The months with the highest UV index are July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, November and December (UV index 6).
Average cloud cover in July
Kailua, HI
- Average cloud cover in July: 30
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is September (Cloud cover 27).
Average visibility in July
Kailua, 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).
