Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
August and September, with an average high-temperature of 80.2°F (26.8°C), are the warmest months in Kalaupapa.Humidity
The average relative humidity in September is 75%.Rainfall
In Kalaupapa, Hawaii, in September, it is raining for 10.1 days, with typically 0.75" (19mm) of accumulated precipitation. Throughout the year, in Kalaupapa, Hawaii, there are 126.4 rainfall days, and 9.84" (250mm) of precipitation is accumulated.Ocean temperature
With an average ocean temperature of 80.6°F (27°C), September is the month with the warmest seawater.Note: Between 77°F (25°C) and 84.2°F (29°C), water temperature is typically considered very warm and pleasurable by everyone. Water activities at these temperatures are enjoyable for extended periods without discomfort.
Daylight
In September, the average length of the day in Kalaupapa is 12h and 15min.On the first day of September, sunrise is at 6:11 am and sunset at 6:43 pm. On the last day of the month, sunrise is at 6:19 am and sunset at 6:16 pm HST.
Sunshine
The average sunshine in September is 9.5h.UV index
June through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 7 in September converts into the following recommendations:
Shun overexposure. Protection from sun ravages is indispensable. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Be alert! The reflection of water and sand augments UV radiation intensity.
Frequently asked questions
What part of the year is the hottest in Kalaupapa?
What is the average September temperature in Kalaupapa?
What is the average humidity in September in Kalaupapa?
How much does it rain in Kalaupapa in September?
What month is the ocean warmest in Kalaupapa?
What is the water temperature in September in Kalaupapa?
What is the average length of the day in September in Kalaupapa?
When is the sunrise / sunset in September in Kalaupapa?
How many hours of sunshine does Kalaupapa have in September?
What is the month with the highest UV index in Kalaupapa?
How high is the UV index in September in Kalaupapa?
Average temperature in September
Kalaupapa, HI
- Average high temperature in September: 80.2°F
The warmest months (with the highest average high temperature) are August and September (80.2°F).
The month with the lowest average high temperature is February (74.3°F).
- Average low temperature in September: 77.2°F
The months with the highest average low temperature are September and October (77.2°F).
The coldest month (with the lowest average low temperature) is March (71.2°F).
Average pressure in September
Kalaupapa, HI
- Average pressure in September: 29.97"Hg
The months with the highest atmospheric pressure are March and April (30.05"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).
Average wind speed in September
Kalaupapa, HI
- Average wind speed in September: 11.8mph
The windiest month (with the highest average wind speed) is July (13.9mph).
The calmest month (with the lowest average wind speed) is January (10.8mph).
Average humidity in September
Kalaupapa, HI
- Average humidity in September: 75%
The months with the highest relative humidity are April, May, June, July and August (76%).
The months with the lowest relative humidity are January and November (74%).
Average rainfall in September
Kalaupapa, HI
- Average rainfall in September: 0.75"
The wettest month (with the highest rainfall) is March (1.3").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in September
Kalaupapa, HI
- Average rainfall days in September: 10.1 days
The month with the highest number of rainy days is March (13.2 days).
The month with the least rainy days is July (8.5 days).
Average sea temperature in September
Kalaupapa, HI
- Average sea temperature in September: 81°F
The best month for swimming (with the highest average sea temperature) is September (81°F).
The coldest months (with the lowest average sea temperature) are January, February, March and April (75°F).
Average daylight in September /
Average sunshine in September
Kalaupapa, 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 3min
The month with the most sunshine is June (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).
Average sunshine days in September
Kalaupapa, HI
- Average sunshine days in September: 12.7 days
The month with the most sunshine days is July (16.1 days).
The month with the least sunshine days is November (10.8 days).
Average UV index in September
Kalaupapa, HI
- Average UV index in September: 7
The months with the highest UV index are June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, April, May, November and December (UV index 6).
Average cloud cover in September
Kalaupapa, HI
- Average cloud cover in September: 23
The months with the most cloud cover are February and March (Cloud cover 30).
The month with the least cloud cover is September (Cloud cover 23).
Average visibility in September
Kalaupapa, 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).
Kalaupapa, Hawaii, USA
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