September weather forecast
Puunene, HI

Weather in September

September, the first month of the autumn, in Puunene, is still a warm month, with average temperature ranging between max 79.5°F (26.4°C) and min 75.9°F (24.4°C).

Temperature

With an average high-temperature of 79.5°F (26.4°C) and an average low-temperature of 75.9°F (24.4°C), September is the warmest month.

Humidity

In Puunene, the average relative humidity is 76%.

Rainfall

In Puunene, it is raining for 7.7 days, with typically 0.39" (10mm) of accumulated precipitation. Throughout the year, in Puunene, Hawaii, there are 129.8 rainfall days, and 9.37" (238mm) of precipitation is accumulated.

Snowfall

The only month with snowfall is September. The month with the most snowfall days is September when snow falls for 0.1 days.

Daylight

In September, the average length of the day is 12.3h.

Sunshine

The average sunshine in September is 9.6h.

UV index

September is the month with the highest UV index, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 7 transform into the following instructions:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the warmest month in Puunene?

September is the warmest month in Puunene, Hawaii, with an average high-temperature of 79.5°F (26.4°C) and an average low-temperature of 75.9°F (24.4°C).

What is the average humidity in September in Puunene?

In September, the average relative humidity in Puunene is 76%.

How many days does it rain in September in Puunene?

In Puunene, during September, the rain falls for 7.7 days and regularly aggregates up to 0.39" (10mm) of precipitation.

When does it snow the most in Puunene?

September has the most snowfall days of the year in Puunene. Snow falls for 0.1 days.

When does it start to snow in Puunene?

September is the first month it typically snows in Puunene. Throughout September, there are 0.1 snowfall days.

How many hours of daylight does Puunene have in September?

In Puunene, Hawaii, the average length of the day in September is 12.3h.

How many hours of sunshine does Puunene have in September?

The average sunshine in September in Puunene is 9.6h.

What is the month with the highest UV index in Puunene?

The month with the highest UV index in Puunene, Hawaii, is September, with an average maximum UV index of 7.

What is the UV index reading in September in Puunene?

In September, the average daily maximum UV index in Puunene, Hawaii, is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to the Sun's UV rays.

Average temperature in September
Puunene, HI

Average temperature in September - Puunene, HI
  • Average high temperature in September: 79.5°F

The warmest month (with the highest average high temperature) is September (79.5°F).
The month with the lowest average high temperature is March (73.8°F).

  • Average low temperature in September: 75.9°F

The month with the highest average low temperature is September (75.9°F).
The coldest month (with the lowest average low temperature) is March (70.2°F).

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Average pressure in September
Puunene, HI

Average pressure in September - Puunene, HI
  • Average pressure in September: 29.97"

The month with the highest atmospheric pressure is April (30.06").
Months with the lowest atmospheric pressure are September and October (29.97").

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Average wind speed in September
Puunene, HI

Average wind speed in September - Puunene, HI
  • Average wind speed in September: 12.2mph

The windiest month (with the highest average wind speed) is June (14mph).
The calmest month (with the lowest average wind speed) is January (10.6mph).

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Average humidity in September
Puunene, HI

Average humidity in September - Puunene, HI
  • Average humidity in September: 76%

Months with the highest relative humidity are July and August (77%).
Months with the lowest relative humidity are January, February and March (75%).

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Average rainfall in September
Puunene, HI

Average rainfall in September - Puunene, HI
  • Average rainfall in September: 0.39"

The wettest month (with the highest rainfall) is February (1.26").
The driest month (with the least rainfall) is June (0.28").

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Average rainfall days in September
Puunene, HI

Average rainfall days in September - Puunene, HI
  • Average rainfall days in September: 7.7 days

The month with the highest number of rainy days is March (15.6 days).
Months with the least rainy days are June, August and September (7.7 days).

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Average snowfall days in September
Puunene, HI

Average snowfall days in September - Puunene, HI
  • Average snowfall days in September: 0.1 days

The month with the highest number of snowfall days is September (0.1 days).
Months with the least snowfall days are January, February, March, April, May, June, July, August, October, November and December (0 days).

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Average daylight in September /
Average sunshine in September
Puunene, HI

Average daylight in September / Average sunshine in September - Puunene, HI
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 13.4h).
The month with the shortest days is December (Average daylight: 10.9h).

  • Average sunshine in September: 9.6h

The month with the most sunshine is June (Average sunshine: 11.4h).
The month with the least sunshine is December (Average sunshine: 6.8h).

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Average sunshine days in September
Puunene, HI

Average sunshine days in September - Puunene, HI
  • Average sunshine days in September: 16 days

The month with the most sunshine days is July (17.1 days).
The month with the least sunshine days is November (8.9 days).

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Average UV index in September
Puunene, HI

Average UV index in September - Puunene, HI
  • Average UV index in September: 7

The month with the highest UV index is September (UV index 7).
Months with the lowest UV index are January, February, March, April, May, June, July, August, October, November and December (UV index 6).

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Average cloud cover in September
Puunene, HI

Average cloud cover in September - Puunene, HI
  • Average cloud cover in September: 23

The month with the most cloud cover is March (Cloud cover 33).
The month with the least cloud cover is September (Cloud cover 23).

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Average visibility in September
Puunene, HI

Average visibility in September - Puunene, HI
  • Average visibility in September: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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