Climateby Month

Kailua-Kona, HI weather in July

NOAA 1991-2020 normals and daily records · Kailua-Kona all year

In July, Kailua-Kona sees highs around 86°F and lows around 75°F: warm and mostly dry. There are about 5 days with rain.

Normal high
86°F
Normal low
75°F
Wet days
5
1.2 in total
Daylight
13.2 h

How July changes from start to finish

Normal values at the start and end of July
July 1July 31
Normal high86°F87°F
Normal low74°F76°F
Chance of a wet day18%17%
Sunrise / sunset5:48 am / 7:06 pm5:59 am / 7:01 pm
Daylight13.3 h13.0 h

Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Hawaii time (no daylight saving)).

What kind of days to expect

  • Comfortable dayshigh 65-80°F (temperature only: no humidity station nearby)0 of 31
  • Beach dayshigh 80-95°F, under 0.05 in of rain (temperature and rain only)28 of 31
  • Hot dayshigh 90°F or more1 of 31
  • Wet daysat least 0.01 in of rain or melted snow5 of 31
  • Notable rainat least 0.10 in3 of 31
  • Freezing nightslow 32°F or below0 of 31

Average days per July, counted from daily records for each year 1991-2020.

Rain in July

Normal precipitation is 1.2 in; a dry July brings about 0.3 in and a wet one about 1.3 in (25th and 75th percentiles). About 1 day brings half an inch or more.

How July varies from year to year

  • Warmest July, 1991-20202015: average high 88°F
  • Coolest July2010: average high 83°F
  • Wettest July2008: 4.7 in
  • Driest July2002: 0.01 in
  • Highest reading93°F (July 30, 2000)
  • Lowest reading69°F (July 6, 2011)

From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.

July compared with June and August

JuneJulyAugust
Normal high85°F86°F87°F
Normal low74°F75°F76°F
Wet days655
Comfortable days000
Daylight13.3 h13.2 h12.8 h

Highs change by +1°F from June and +1°F into August.

How Kailua-Kona ranks in July

  • Normal high212th warmest of 378 cities; 3rd of 7 in Hawaii
  • Wet days113th driest of 378

What to pack for Kailua-Kona in July

  • Light, breathable clothing – highs near 86°F
  • A swimsuit – about 28 beach days

Heating and cooling

July has 0 heating degree days and 481 cooling degree days (base 65°F), 10% of the year's total heating and cooling demand.

Questions

How hot is Kailua-Kona in July?

The normal high is 86°F and the normal low is 75°F. From 1991 to 2020 the hottest July reading was 93°F (July 30, 2000).

Does it rain a lot in Kailua-Kona in July?

About 5 days in July have at least 0.01 in of precipitation, and the normal total is 1.2 in. The wettest July in 1991-2020 was in 2008 (4.7 in); the driest was in 2002 (0.01 in).

Is July a good time to visit Kailua-Kona?

July ranks 7th of 12 months on our comfort score for Kailua-Kona (53 out of 100). It has almost no comfortable days (judged by temperature only) and about 1 day at 90°F or hotter. The best months are January, February and March.

Where the numbers come from

  • Temperature and frost dates: Kailua Kona Ke-Ahole Airport (USW00021510), 7.7 mi NNW of the city center, 43 ft . NOAA normals and daily records, 1991-2020.
  • Rain, snowfall and snow depth: Honokohau Harbor 68.14 (USC00511880), 3.4 mi NW of the city center, 30 ft . NOAA normals and daily records, 1991-2020.
  • Not available for this location: humidity and wind by hour, cloud cover and daily humidity and wind (no station close enough or similar enough in elevation).