Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The temperature hits its peak in August and September, recording an average high-temperature of 81°F (27.2°C).Heat index
Throughout September, the heat index is appraised at a tropical 86°F (30°C). One might feel worn out with persistent exposure and activity, resulting in heat cramps.The metrics for the heat index are tailored for both shady environments and light winds. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', ties air temperature with relative humidity to produce the perceived temperature sensation. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Humidity
The months with the lowest humidity in Kaneohe are January, May, June, September and November, with an average relative humidity of 75%.Rainfall
In Kaneohe, during September, the rain falls for 14.5 days and regularly aggregates up to 1.1" (28mm) of precipitation. In Kaneohe, Hawaii, during the entire year, the rain falls for 187.1 days and collects up to 15.83" (402mm) of precipitation.Ocean temperature
The month with the warmest seawater is September, with an average ocean temperature of 80.4°F (26.9°C).Note: For engaging in water activities including swimming and diving, temperatures from 77°F (25°C) to 84.2°F (29°C) are perceived as perfect, providing pleasure for extended durations.
Daylight
In Kaneohe, the average length of the day in September is 12h and 15min.On the first day of September in Kaneohe, sunrise is at 6:14 am and sunset at 6:46 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 6:19 pm HST.
Sunshine
In September, the average sunshine in Kaneohe is 9h.UV index
July through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for average individuals.Note: In September, the maximum UV index of 7 suggests this advice:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Take caution! The UV rays from the Sun gain strength from sand and water reflections.
Frequently asked questions
What time of the year is the hottest in Kaneohe?
What is the temperature in September in Kaneohe?
What are the least humid months in Kaneohe?
What is the average humidity in September in Kaneohe?
How much does it rain in Kaneohe in September?
What is the month with the warmest ocean in Kaneohe?
What is the ocean temperature in September in Kaneohe?
What is the average length of the day in September in Kaneohe?
When are sunrise and sunset in September in Kaneohe?
How long on average sun shines in September in Kaneohe?
When is the highest UV index in Kaneohe?
What is the UV index intensity in September in Kaneohe?
Average temperature in September
Kaneohe, HI
- Average high temperature in September: 81°F
The warmest months (with the highest average high temperature) are August and September (81°F).
The month with the lowest average high temperature is February (74.3°F).
- Average low temperature in September: 76.3°F
The month with the highest average low temperature is August (76.6°F).
The coldest month (with the lowest average low temperature) is February (69.6°F).
Average pressure in September
Kaneohe, HI
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is April (30.06"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).
Average wind speed in September
Kaneohe, HI
- Average wind speed in September: 11.4mph
The windiest month (with the highest average wind speed) is July (13.5mph).
The calmest month (with the lowest average wind speed) is January (10.3mph).
Average humidity in September
Kaneohe, HI
- Average humidity in September: 75%
The months with the highest relative humidity are February, March, April, July, August, October and December (76%).
The months with the lowest relative humidity are January, May, June, September and November (75%).
Average rainfall in September
Kaneohe, HI
- Average rainfall in September: 1.1"
The wettest month (with the highest rainfall) is March (2.01").
The driest month (with the least rainfall) is July (0.71").
Average rainfall days in September
Kaneohe, HI
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is March (18.3 days).
The month with the least rainy days is June (13.5 days).
Average sea temperature in September
Kaneohe, HI
- Average sea temperature in September: 80.4°F
The best month for swimming (with the highest average sea temperature) is September (80.4°F).
The coldest month (with the lowest average sea temperature) is March (75.7°F).
Average daylight in September /
Average sunshine in September
Kaneohe, HI
- Average daylight in September: 12h and 2min
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 September: 9h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).
Average sunshine days in September
Kaneohe, HI
- Average sunshine days in September: 11.2 days
The month with the most sunshine days is June (12.2 days).
The month with the least sunshine days is April (6.5 days).
Average UV index in September
Kaneohe, HI
- Average UV index in September: 7
The months with the highest UV index are July, August and September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, October, November and December (UV index 6).
Average cloud cover in September
Kaneohe, HI
- Average cloud cover in September: 32
The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in September
Kaneohe, HI
- Average visibility in September: 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).
Kaneohe, Hawaii, USA
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