July weather forecastNānākuli, HI
July
Weather in July
The weather in July in Nānākuli, Hawaii, elevates further, introducing the city to the peak of the summer season. Month of July witnesses more sunshine, wind and less rainfall. Noteworthy is the UV index, which peaks at 7 for the year. Progressing towards August, the temperature stays high but exhibits a slight decline in rainfall and wind speed, which meticulously balances out the hot weather.Temperature
The beginning of July records an average high-temperature of a still warm 80.8°F (27.1°C), marking a negligible difference from June's 79.7°F (26.5°C). Night temperatures in July exhibit a subtle decrease, settling at an average of 75.2°F (24°C).Heat index
The heat index value for July is computed to be 84.2°F (29°C). Exhaustion might be the outcome of enduring exposure and continuous activity, with a risk of heat cramps.Be advised, the heat index considers values for conditions in shade and with a light breeze. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', gives an indication of how one might feel in terms of heat after considering humidity. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
Humidity
The average relative humidity in July is 75%.Rainfall
July is the month with the least rainfall. Rain falls for 15.5 days and accumulates 0.67" (17mm) of precipitation.Ocean temperature
In Nānākuli, the average seawater temperature in July is 79.3°F (26.3°C).Note: For any water activity, temperatures between 77°F (25°C) and 84.2°F (29°C) are deemed excellent and extremely satisfying for enduring periods.
Daylight
In Nānākuli, Hawaii, the average length of the day in July is 13h and 17min.On the first day of the month, sunrise is at 5:54 am and sunset at 7:19 pm. On the last day of July, sunrise is at 6:05 am and sunset at 7:12 pm HST.
Sunshine
The average sunshine in July is 9.9h.UV index
The months with the highest UV index are June through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: An average UV index of 7 in July transforms into this advice:
Deflect overexposure. Sun protection is a necessity. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Be on guard! The reflective nature of sand and water boosts UV exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Nānākuli, HI
- Average high temperature in July: 80.8°F
The warmest months (with the highest average high temperature) are August and September (81.7°F).
The month with the lowest average high temperature is February (75°F).
- Average low temperature in July: 75.2°F
The months with the highest average low temperature are August and September (75.9°F).
The coldest month (with the lowest average low temperature) is February (69.1°F).
Average pressure in July
Nānākuli, HI
- Average pressure in July: 30"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
Nānākuli, HI
- Average wind speed in July: 11.6mph
The windiest month (with the highest average wind speed) is July (11.6mph).
The calmest month (with the lowest average wind speed) is October (8.8mph).
Average humidity in July
Nānākuli, HI
- Average humidity in July: 75%
The month with the highest relative humidity is December (76%).
The months with the lowest relative humidity are January, April, May, June, August, September, October and November (74%).
Average rainfall in July
Nānākuli, HI
- Average rainfall in July: 0.67"
The wettest month (with the highest rainfall) is March (1.81").
The driest month (with the least rainfall) is July (0.67").
Average rainfall days in July
Nānākuli, HI
- Average rainfall days in July: 15.5 days
The month with the highest number of rainy days is September (18.9 days).
The month with the least rainy days is January (13.8 days).
Average sea temperature in July
Nānākuli, HI
- Average sea temperature in July: 79.2°F
The best month for swimming (with the highest average sea temperature) is September (80.6°F).
The coldest month (with the lowest average sea temperature) is March (75.7°F).
Average daylight in July /
Average sunshine in July
Nānākuli, 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: 9h and 54min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is November (Average sunshine: 6h and 36min).
Average sunshine days in July
Nānākuli, HI
- Average sunshine days in July: 9.6 days
The month with the most sunshine days is January (11.8 days).
The month with the least sunshine days is November (6.4 days).
Average UV index in July
Nānākuli, HI
- Average UV index in July: 7
The months with the highest UV index are June, July, August and September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, October, November and December (UV index 6).
Average cloud cover in July
Nānākuli, HI
- Average cloud cover in July: 35
The month with the most cloud cover is March (Cloud cover 38).
The months with the least cloud cover are January and September (Cloud cover 32).
Average visibility in July
Nānākuli, 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).
