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United StatesThe weather in September in Kahalu'u
It's hot in September in Kahalu'u with an average temperature of 30°C. Temperatures this month range from a low of 30°C to a high of 31°C. At night, you can expect temperatures between 24°C and 25°C.
September is a good month to be in Kahalu'u for sunny weather. You’ll have high temperatures and not too much rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Kahalu'u, Hawaii. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 35°C in 2015, Kahalu'u reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 26°C in 2015. The extreme nighttime temperatures ranged from a lowest recorded value of 20°C to a highest value of 27°C.
Rainfall amount
In September, there is an average of 42 mm of precipitation, spread over 8 days. The wind speed is around 4 Bft, mostly coming from the East.
Daily weather in September for Kahalu'u
Click on any day in September to get detailed info about the usual weather on that day in Kahalu'u. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Kahalu'u | New York | |
|---|---|---|
| Average temperature | 30°C | 27°C |
| Max. temperature | 31°C | 31°C |
| Min. temperature | 24°C | -5°C |
| Total precipitation | 42 mm | 57 mm |
| Rainy days | 8 days | 9 days |
Start of September
The month of September starts in Kahalu'u with hot temps, averaging around 31°C during the day and nights around 25°C.
Mid September
By mid-September, daytime temps drop to around 30°C, with nights around 25°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of September
By the end of September, the average daytime temperature in Kahalu'u is around 30°C, while nighttime temps are about 25°C. There’s hardly any chance of precipitation. The weather will be mostly dry with plenty of sun.
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UV index
The UV index is a maximum of 6 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Check out the climate of Kahalu'u for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in September in Kahalu'u, Hawaii. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Kahalu'u
Temperature in September in Kahalu'u over the years
Precipitation charts
These charts show the average amount of precipitation in September in Kahalu'u, Hawaii. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in Kahalu'u
Total precipitation in September in Kahalu'u over the years
Daily UV index in September in Kahalu'u
This chart shows the average daily UV index in September in Kahalu'u, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in September in Kahalu'u
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Average weather in Kahalu'u by month
Click on a month below to see detailed weather info for Kahalu'u. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.