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 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
In Olowalu, September is the warmest month, with temperatures averaging a high of 79.9°F (26.6°C) and a low of 76.1°F (24.5°C).Humidity
In Olowalu, the average relative humidity in September is 75%.Rainfall
In Olowalu, during September, the rain falls for 8.1 days and regularly aggregates up to 0.39" (10mm) of precipitation. In Olowalu, during the entire year, the rain falls for 103.4 days and collects up to 6.57" (167mm) of precipitation.Daylight
In Olowalu, the average length of the day in September is 12h and 15min.On the first day of September, sunrise is at 6:10 am and sunset at 6:41 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 6:14 pm HST.
Sunshine
In Olowalu, the average sunshine in September is 9.6h.UV index
The months with the highest UV index in Olowalu are July through October, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: A daily maximum UV index of 7 in September translates into the following instructions:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. 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. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Frequently asked questions
What are the warmest months in Olowalu?
What are September temperatures in Olowalu?
What is the average humidity in September in Olowalu?
How much does it rain in Olowalu in September?
What is the average length of the day in September in Olowalu?
What time are sunrise and sunset in September in Olowalu?
How long on average sun shines in September in Olowalu?
When is the highest UV index in Olowalu?
How high is the UV index in September in Olowalu?
Average temperature in September
Olowalu, HI
- Average high temperature in September: 79.9°F
The warmest month (with the highest average high temperature) is September (79.9°F).
The month with the lowest average high temperature is February (73.9°F).
- Average low temperature in September: 76.1°F
The month with the highest average low temperature is October (76.5°F).
The coldest months (with the lowest average low temperature) are February and March (70.7°F).
Average pressure in September
Olowalu, HI
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is April (30.05"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).
Average wind speed in September
Olowalu, HI
- Average wind speed in September: 11.9mph
The windiest month (with the highest average wind speed) is June (13.6mph).
The calmest month (with the lowest average wind speed) is January (10.4mph).
Average humidity in September
Olowalu, HI
- Average humidity in September: 75%
The months with the highest relative humidity are July and August (76%).
The months with the lowest relative humidity are January and February (74%).
Average rainfall in September
Olowalu, HI
- Average rainfall in September: 0.39"
The wettest months (with the highest rainfall) are March and December (0.87").
The driest month (with the least rainfall) is June (0.2").
Average rainfall days in September
Olowalu, HI
- Average rainfall days in September: 8.1 days
The month with the highest number of rainy days is March (11.9 days).
The month with the least rainy days is June (6.6 days).
Average daylight in September /
Average sunshine in September
Olowalu, 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 30min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in September
Olowalu, HI
- Average sunshine days in September: 17.3 days
The month with the most sunshine days is June (19.9 days).
The month with the least sunshine days is March (15.2 days).
Average UV index in September
Olowalu, HI
- Average UV index in September: 7
The months with the highest UV index are July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, November and December (UV index 6).
Average cloud cover in September
Olowalu, HI
- Average cloud cover in September: 21
The month with the most cloud cover is March (Cloud cover 30).
The months with the least cloud cover are June and September (Cloud cover 21).
Average visibility in September
Olowalu, 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).
Olowalu, Hawaii, USA
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