September weather forecast
Puunene, HI

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Weather in September

September bids a slow farewell to the summer in Puunene, embracing the early signs of the approaching fall. The weather continues to remain warm, while rainfall measures equal levels as the preceding months of July and August. The ever-so-slight decrease in temperature implies a gradual shift easing towards a cooler climate. Additionally, wind gusts marginally decrease, hinting at gentler winds in the forthcoming months. As October arrives, a notable drop in temperature is anticipated, along with an increase in rainfall.

Temperature

In Puunene, September is the warmest month, with temperatures averaging a high of 79.5°F (26.4°C) and a low of 75.9°F (24.4°C).

Humidity

The average relative humidity in September in Puunene is 76%.

Rainfall

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

Snowfall

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

Daylight

The average length of the day in September is 12h and 15min.
On the first day of September in Puunene, Hawaii, sunrise is at 6:09 am and sunset at 6:41 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 6:14 pm HST.

Sunshine

The average sunshine in September is 9.6h.

UV index

The month with the highest UV index is September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 7 in September interprets into the following advice:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
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Frequently asked questions

What part of the year is the hottest in Puunene?

September is the month that records the highest temperatures in Puunene, Hawaii, with averages ranging from a high of 79.5°F (26.4°C) to a low of 75.9°F (24.4°C).

What is the average September temperature in Puunene?

In September, in Puunene, the average high-temperature is 79.5°F (26.4°C), and the average low-temperature is 75.9°F (24.4°C).

What is the average humidity in September in Puunene?

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

How much does it rain in Puunene in September?

In Puunene, in September, it is raining for 7.7 days, with typically 0.39" (10mm) of accumulated precipitation.

When does it snow the most in Puunene?

The month with the most snowfall days in Puunene is September, when 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 day length in September is 12h and 15min.

What time are sunrise and sunset in September in Puunene?

On the first day of September in Puunene, Hawaii, sunrise is at 6:09 am and sunset at 6:41 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 6:14 pm HST.

How many hours of sunshine does Puunene have in September?

The average sunshine duration in September in Puunene is 9.6h.

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

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

What is the UV index intensity in September in Puunene?

In September, the average daily maximum UV index in Puunene, Hawaii, is 7. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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"Hg

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

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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%

The months with the highest relative humidity are July and August (77%).
The 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).
The 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).
The 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: 12h and 2min

The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 54min).

  • Average sunshine in September: 9h and 4min

The month with the most sunshine is June (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).

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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).
The 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

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).

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Puunene, Hawaii, USA

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