United StatesAverage weather for Hanalei in September
It's hot in September in Hanalei 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.
Start of September
The month of September starts in Hanalei with hot temps, averaging around 31°C during the day and nights around 25°C. There’s little chance of precipitation. The weather’s mostly sunny and dry. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
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. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
End of September
By the end of September, the average daytime temperature in Hanalei is around 30°C, while nighttime temps are about 25°C. A shower might pop up, but overall, the weather will be dry and sunny. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
In September, there is an average of 37 mm of precipitation, spread over 9 days. The wind speed is around 4 Bft, mostly coming from the Northeast.
Hanalei in September |
New York | ||
|---|---|---|---|
 Average temperature |
30°C | 27°C | |
 Max. temperature |
31°C | 31°C | |
| Min. temperature |
30°C | -5°C | |
 Total precipitation |
37 mm | 57 mm | |
| Rainy days |
9 days | 9 days | |
August
UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is September a good time to visit Hanalei?
September is a good month to be in Hanalei for sunny weather. You’ll have high temperatures and not too much rain.
Temperature records
With 33°C in 2019, Hanalei reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 27°C in 2021. The extreme nighttime temperatures ranged from a lowest recorded value of 20°C to a highest value of 27°C.
Check out the climate of Hanalei for all months and discover the best travel time
Daily Temperature in September in Hanalei
This chart shows the average daily high and low temperatures in September for Hanalei, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in September in Hanalei
The chart below shows the average daily precipitation in September for Hanalei, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 9 days of precipitation in Hanalei.
Daily UV index in September in Hanalei
This chart shows the average daily UV index in September in Hanalei, 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.
Temperature in September in Hanalei over the years
This chart shows the average temperature in September in Hanalei, measured in degrees Celsius, over the past few years.
Total precipitation in September in Hanalei over the years
This chart shows the average precipitation in September in Hanalei, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in September for Hanalei
Click on any day in September to get detailed info about the usual weather on that day in Hanalei. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Hanalei
Have you been to Hanalei in September?
Share your weather experience in September in Hanalei.
Average weather in Hanalei by month
Click on a month below to see detailed weather info for Hanalei. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
