June weather forecastKapaa, HI
June
Weather in June
June in Kapaa, Hawaii heralds the arrival of summer. Maximum temperatures soar to hit an annual high of 78.3°F (25.7°C), signaling increased beach activity. The UV index maintains its standard level at 6, rendering sun protection measures vital. This period enjoys maximum daylight hours, and despite the intensified heat, relief is offered in the form of increased wind speeds.Temperature
On the advent of June, Kapaa's average high-temperature exhibits a minor adjustment to a still moderately hot 78.3°F (25.7°C) from May's 76.8°F (24.9°C). A modest decline from daytime high temperatures is noticed in June, marking the average low at a still moderately hot 73.9°F (23.3°C).Humidity
June through August, October and December, with an average relative humidity of 77%, are the most humid months.Rainfall
In Kapaa, during June, the rain falls for 18.8 days and regularly aggregates up to 1.85" (47mm) of precipitation. Throughout the year, there are 218.4 rainfall days, and 22.13" (562mm) of precipitation is accumulated.Ocean temperature
In June, the average ocean temperature is 78.4°F (25.8°C).Note: Swimming, diving, and other activities in water temperatures between 77°F (25°C) and 84.2°F (29°C) are thought to be quite enjoyable and satisfying for extended periods, with no discomfort.
Daylight
With an average of 13h and 30min of daylight, June has the longest days of the year.On the first day of June, sunrise is at 5:53 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 5:57 am and sunset at 7:25 pm HST.
Sunshine
June has the most sunshine of the year in Kapaa, with an average of 9.7h of sunshine.UV index
January through August, October through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.Note: An average maximum UV index of 6 in June leads to these recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be careful! The Sun's UV radiation is accentuated by reflecting off sand and water.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Kapaa, HI
- Average high temperature in June: 78.3°F
The warmest month (with the highest average high temperature) is September (79.7°F).
The months with the lowest average high temperature are February and March (73.2°F).
- Average low temperature in June: 73.9°F
The month with the highest average low temperature is September (75.9°F).
The coldest month (with the lowest average low temperature) is February (68.5°F).
Average pressure in June
Kapaa, HI
- Average pressure in June: 30.04"Hg
The month with the highest atmospheric pressure is April (30.07"Hg).
The months with the lowest atmospheric pressure are September and October (29.98"Hg).
Average wind speed in June
Kapaa, HI
- Average wind speed in June: 12.1mph
The windiest month (with the highest average wind speed) is July (12.3mph).
The calmest month (with the lowest average wind speed) is January (10mph).
Average humidity in June
Kapaa, HI
- Average humidity in June: 77%
The months with the highest relative humidity are June, July, August, October and December (77%).
The month with the lowest relative humidity is January (75%).
Average rainfall in June
Kapaa, HI
- Average rainfall in June: 1.85"
The wettest month (with the highest rainfall) is March (2.52").
The driest month (with the least rainfall) is April (1.3").
Average rainfall days in June
Kapaa, HI
- Average rainfall days in June: 18.8 days
The month with the highest number of rainy days is August (21.1 days).
The month with the least rainy days is January (12.5 days).
Average sea temperature in June
Kapaa, HI
- Average sea temperature in June: 78.4°F
The best month for swimming (with the highest average sea temperature) is September (80.2°F).
The coldest month (with the lowest average sea temperature) is March (74.8°F).
Average daylight in June /
Average sunshine in June
Kapaa, HI
- Average daylight in June: 13h and 30min
The month with the longest days is June (Average daylight: 13h and 30min).
The month with the shortest days is December (Average daylight: 10h and 48min).
- Average sunshine in June: 9h and 42min
The month with the most sunshine is June (Average sunshine: 9h and 42min).
The month with the least sunshine is November (Average sunshine: 6h and 12min).
Average sunshine days in June
Kapaa, HI
- Average sunshine days in June: 5 days
The month with the most sunshine days is January (12.8 days).
The month with the least sunshine days is August (2.9 days).
Average UV index in June
Kapaa, HI
- Average UV index in June: 6
The month with the highest UV index is September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, October, November and December (UV index 6).
Average cloud cover in June
Kapaa, HI
- Average cloud cover in June: 45
The month with the most cloud cover is March (Cloud cover 47).
The months with the least cloud cover are January and September (Cloud cover 38).
Average visibility in June
Kapaa, HI
- Average visibility in June: 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).
