July weather forecastKihei, HI
July
Weather in July
Kihei’s weather showcases its sunniest and warmest phase in July. The seventh month witnesses a slight increase in rainfall at 0.39" (10mm), yet maintains its characteristic sunny disposition. The warm sea temperature invites travelers to participate in various water activities such as snorkeling, swimming, and paddleboarding. Longer daylight hours promise extended exploration opportunities of Hawaii's picturesque beauty.Temperature
With July's advent, Kihei sees an average high-temperature of a still moderately hot 78.8°F (26°C), subtly shifted from June's 77.9°F (25.5°C). Nights in July showcase an average temperature of 75.6°F (24.2°C), slightly cooler than the daytime.Humidity
The months with the highest humidity are July and August, with an average relative humidity of 76%.Rainfall
In Kihei, in July, during 8.5 rainfall days, 0.39" (10mm) of precipitation is typically accumulated. Throughout the year, there are 103.4 rainfall days, and 6.57" (167mm) of precipitation is accumulated.Ocean temperature
In Kihei, in July, the average water temperature is 78.4°F (25.8°C).Note: In water temperatures ranging between 77°F (25°C) and 84.2°F (29°C), activities such as swimming and diving become highly pleasurable for long durations.
Daylight
In July, the average length of the day is 13h and 15min.On the first day of July, sunrise is at 5:48 am and sunset at 7:10 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 7:04 pm HST.
Sunshine
The average sunshine in July in Kihei is 11.2h.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: In July, the maximum UV index of 7 translates into these guidelines:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. 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
Kihei, HI
- Average high temperature in July: 78.8°F
The warmest month (with the highest average high temperature) is September (79.9°F).
The month with the lowest average high temperature is February (73.9°F).
- Average low temperature in July: 75.6°F
The month with the highest average low temperature is October (76.5°F).
The coldest months (with the lowest average low temperature) are February and March (70.7°F).
Average pressure in July
Kihei, 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
Kihei, HI
- Average wind speed in July: 13.5mph
The windiest month (with the highest average wind speed) is June (13.6mph).
The calmest month (with the lowest average wind speed) is January (10.4mph).
Average humidity in July
Kihei, HI
- Average humidity in July: 76%
The months with the highest relative humidity are July and August (76%).
The months with the lowest relative humidity are January and February (74%).
Average rainfall in July
Kihei, HI
- Average rainfall in July: 0.39"
The wettest months (with the highest rainfall) are March and December (0.87").
The driest month (with the least rainfall) is June (0.2").
Average rainfall days in July
Kihei, HI
- Average rainfall days in July: 8.5 days
The month with the highest number of rainy days is March (11.9 days).
The month with the least rainy days is June (6.6 days).
Average sea temperature in July
Kihei, HI
- Average sea temperature in July: 78.5°F
The best month for swimming (with the highest average sea temperature) is September (80°F).
The coldest month (with the lowest average sea temperature) is March (75.6°F).
Average daylight in July /
Average sunshine in July
Kihei, HI
- Average daylight in July: 13h and 12min
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: 11h and 12min
The month with the most sunshine is June (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in July
Kihei, HI
- Average sunshine days in July: 16 days
The month with the most sunshine days is June (19.9 days).
The month with the least sunshine days is March (15.2 days).
Average UV index in July
Kihei, 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
Kihei, HI
- Average cloud cover in July: 24
The month with the most cloud cover is March (Cloud cover 30).
The months with the least cloud cover are June and September (Cloud cover 21).
Average visibility in July
Kihei, 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).





