Temperatures in September
It's hot in September in Honolulu with an average temperature of 31°C. Temperatures this month range from a low of 31°C to a high of 32°C. At night, you can expect temperatures between 25°C and 25°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Honolulu in September. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of September
The month of September starts in Honolulu with hot temperatures, averaging around 32°C during the day and nights close to 25°C. There’s little chance of precipitation. The weather is mostly sunny and dry. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
Mid-September
By mid-September, the average daytime temperature drops to around 31°C, with nights close to 25°C. There might be a few showers during this period, but plenty of dry days with sunshine too. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
End of September
By the end of September, the average daytime temperature in Honolulu will be around 32°C, with nights close to 25°C. Barely any chance of precipitation. The weather will mostly be dry with lots of sunshine. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
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Water temperature
The water temperature at Honolulu is 28°C this month. Nice and warm for a swim.
Precipitation in September
In September, there is an average of 33 mm of precipitation, spread over 6 days. The wind speed is around 4 Bft, mostly coming from the East.
The average precipitation chance is 21% per day this month.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in September for Honolulu. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Honolulu in September |
London | ||
|---|---|---|---|
 Average Temperature |
31°C | 20°C | |
 High Temp |
32°C | 22°C | |
| Low Temp |
31°C | 17°C | |
 Total Precipitation |
33 mm | 44 mm | |
| Rainy Days |
6 days | 8 days | |
August
UV index
The UV index is a maximum of 10 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 Honolulu?
September is a great month to be in Honolulu for sunny weather. You’ll get high temperatures and not too much rain this month.
Temperature records for Honolulu in September
With 34°C, Honolulu hit the highest temperature in the last 10 years in September 2014. The lowest daytime temperature in this month was 26°C in 2018. The extreme night temperatures ranged from a low of 20°C to a high of 28°C.
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Daily Temperature in September in Honolulu
This chart shows the average daily temperatures, both day and night, for each day in September in Honolulu, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Weather experiences in September in Honolulu
Good
Mostly sunny days with average temperatures around 30 degree... more
Daily Precipitation in September in Honolulu
The chart below shows the average daily precipitation in September for Honolulu, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown 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 rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for September, you can expect around 6 days of rain in Honolulu.
Daily UV Index in September in Honolulu
This chart shows the average daily UV index in September in Honolulu, 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 Honolulu Over the Years
This chart shows the average temperature in September in Honolulu, measured in degrees Celsius, over the past years.
Total Precipitation in September in Honolulu Over the Years
This chart shows the average precipitation in September in Honolulu, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in September for Honolulu
Click on a specific day in September for detailed info on the typical weather on that day in Honolulu. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Honolulu
The weather in September in Honolulu is rated 4 out of 5 stars by 1 visitor. Have you been to Honolulu? Share your weather experience to help other visitors.
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Mostly sunny days with average temperatures around 30 degrees Celsius. But every now and then there was a short, heavy rain shower, unexpected but refreshing.— This text is automatically translated to English
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Average Weather in Honolulu by Month
Click on a month below to see detailed weather info for Honolulu. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
