Kapaa, Kauai weather in July
Temperature, sea and sunshine in July: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in July
Excellent
Best time to visit: January – December
What is the weather like in Kapaa, Kauai in July?
In July, Kapaa, Kauai is warm: daytime highs average 27 °C, and even at night it stays warm at around 23 °C. The sea averages 25.9 °C – pleasant for swimming. The sun shines for around 9 hours a day. It is the rainy season: rain falls on about 15 days, totalling 36 mm. The air is often humid and muggy. All in all, July is an excellent month for a holiday in Kapaa, Kauai.
July compared
How the weather changes from June to August. Tap a month to open it.
More details for July
- Daylight
- 13 h 22 min06:02 – 19:24
- UV index
- 12 · extremeclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or moreAll months
- Wind
- 17 km/haverage daily peakAll months
- Cloud cover
- 49 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC−10Pacific/Honolulu
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %97 %
- Few rainy daysweight 20 %23 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in July
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
Kapaa, Kauai in July: quick answers
Is Kapaa, Kauai hot in July?
Warm rather than hot: in July, daytime highs in Kapaa, Kauai average 27 °C and nights cool to about 23 °C.
Can you swim in Kapaa, Kauai in July?
Yes. In July the sea averages 25.9 °C – pleasant for swimming.
Does it rain much in Kapaa, Kauai in July?
It rains often – on about 15 days, adding up to 36 mm.
Kapaa, Kauai month by month
The whole year in Kapaa, KauaiAll destinations: USAHawaii weather in JulyWhere to go in JulySea temperature in July
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences