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
In September, Kekaha's weather conditions record an average high-temperature of a still warm 80.4°F (26.9°C), demonstrating little divergence from the preceding month. In Kekaha, September is characterized by an average low-temperature of 76.3°F (24.6°C), indicating a minor drop from daytime highs.Humidity
The months with the lowest humidity are January, May, September and November, with an average relative humidity of 74%.Rainfall
In Kekaha, in September, it is raining for 13.3 days, with typically 0.87" (22mm) of accumulated precipitation. In Kekaha, during the entire year, the rain falls for 172.7 days and collects up to 15.75" (400mm) 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: Temperatures between 77°F (25°C) and 84.2°F (29°C) in water are ideal for swimming, diving, and other activities, providing enjoyment and comfort for extended durations.
Daylight
The average length of the day in September is 12h and 16min.On the first day of the month, sunrise is at 6:22 am and sunset at 6:54 pm. On the last day of September, sunrise is at 6:30 am and sunset at 6:26 pm HST.
Sunshine
In Kekaha, the average sunshine in September is 9.3h.UV index
July through September, with an average maximum UV index of 7, are months with the highest UV index in Kekaha. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.Note: A typical high UV index of 7 in September suggests the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Always opt for UVA and UVB-resistant sunglasses on radiant days. Warning! Reflective surfaces like sand and water amplify the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Kekaha in September?
What are the least humid months in Kekaha?
What is the average humidity in September in Kekaha?
How much does it rain in Kekaha in September?
When is the ocean warmest in Kekaha?
What is the ocean temperature in September in Kekaha?
What is the average length of the day in September in Kekaha?
When are sunrise and sunset in September in Kekaha?
How many hours of sunshine does Kekaha have in September?
What are the months with the highest UV index in Kekaha?
What is the UV index intensity in September in Kekaha?
Average temperature in September
Kekaha, HI
- Average high temperature in September: 80.4°F
The warmest month (with the highest average high temperature) is August (80.8°F).
The months with the lowest average high temperature are February and March (73.4°F).
- Average low temperature in September: 76.3°F
The month with the highest average low temperature is September (76.3°F).
The coldest month (with the lowest average low temperature) is February (69.1°F).
Average pressure in September
Kekaha, HI
- Average pressure in September: 29.98"Hg
The months with the highest atmospheric pressure are March and April (30.06"Hg).
The months with the lowest atmospheric pressure are September and October (29.98"Hg).
Average wind speed in September
Kekaha, HI
- Average wind speed in September: 9.1mph
The windiest month (with the highest average wind speed) is March (10.7mph).
The calmest month (with the lowest average wind speed) is May (8.6mph).
Average humidity in September
Kekaha, HI
- Average humidity in September: 74%
The months with the highest relative humidity are February, March, April, June, July, August, October and December (75%).
The months with the lowest relative humidity are January, May, September and November (74%).
Average rainfall in September
Kekaha, HI
- Average rainfall in September: 0.87"
The wettest month (with the highest rainfall) is March (2.2").
The driest month (with the least rainfall) is July (0.63").
Average rainfall days in September
Kekaha, HI
- Average rainfall days in September: 13.3 days
The month with the highest number of rainy days is March (16.8 days).
The month with the least rainy days is January (11.5 days).
Average sea temperature in September
Kekaha, HI
- Average sea temperature in September: 80.5°F
The best month for swimming (with the highest average sea temperature) is September (80.5°F).
The coldest month (with the lowest average sea temperature) is March (75.4°F).
Average daylight in September /
Average sunshine in September
Kekaha, HI
- Average daylight in September: 12h and 2min
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 September: 9h and 2min
The month with the most sunshine is June (Average sunshine: 11h and 0min).
The month with the least sunshine is November (Average sunshine: 7h and 6min).
Average sunshine days in September
Kekaha, HI
- Average sunshine days in September: 11 days
The month with the most sunshine days is January (13.8 days).
The month with the least sunshine days is November (6.7 days).
Average UV index in September
Kekaha, 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
Kekaha, HI
- Average cloud cover in September: 28
The month with the most cloud cover is March (Cloud cover 35).
The months with the least cloud cover are January and September (Cloud cover 28).
Average visibility in September
Kekaha, 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).
Kekaha, Hawaii, USA
Weather forecast for your location
2. Allow the app to use your location