Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average sea temperature in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
Hilo experiences a recorded average high-temperature of a still moderately hot 74.7°F (23.7°C) in July, closely aligned with June's 73.6°F (23.1°C). A modest nighttime temperature average of 68.4°F (20.2°C) characterizes July in Hilo, Hawaii.Humidity
The months with the lowest humidity are January, May through July, with an average relative humidity of 78%.Rainfall
In July, the rain falls for 17.8 days. Throughout July, 1.61" (41mm) of precipitation is accumulated. In Hilo, Hawaii, during the entire year, the rain falls for 227.7 days and collects up to 27.83" (707mm) of precipitation.Ocean temperature
In July, the average ocean temperature is 78.4°F (25.8°C).Note: Temperatures between 77°F (25°C) and 84.2°F (29°C) are excellent for swimming, diving, and other water activities, providing comfort and enjoyment for extended periods without discomfort.
Daylight
In July, the average length of the day in Hilo 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 Hilo, the average sunshine in July is 10.7h.UV index
May through December, with an average maximum UV index of 6, are months with the highest UV index in Hilo. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.Note: In July, a daily maximum UV index of 6 leads to the following instructions:
Guard against overexposure. Protection from sun-induced harm is essential. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Beware! Reflections from sand and water can intensify the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are July temperatures in Hilo?
What are the least humid months in Hilo?
What is the average humidity in July in Hilo?
How many days does it rain in July in Hilo?
How warm is the water in July in Hilo?
What is the average length of the day in July in Hilo?
When are sunrise and sunset in July in Hilo?
How long on average sun shines in July in Hilo?
What are the months with the highest UV index in Hilo?
What is the UV index intensity in July in Hilo?
Average temperature in July
Hilo, 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
Hilo, 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
Hilo, 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
Hilo, 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
Hilo, 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
Hilo, 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
Hilo, 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
Hilo, HI
- Average daylight in July: 13h and 1min
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 4min
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
Hilo, 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
Hilo, 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
Hilo, 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
Hilo, 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).
Hilo, Hawaii, USA
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