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
September registers as the month with the highest average temperatures, reaching 82°F (27.8°C) at its peak and 59.7°F (15.4°C) at the lowest.Heat index
During September, the heat index is evaluated at 84.2°F (29°C). Exhaustion might be the outcome of enduring exposure and continuous activity, with a risk of heat cramps.Heat index readings emphasize conditions of light breezes and shaded spots. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'feels like' or 'apparent temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Humidity
In September, the average relative humidity is 56%.Rainfall
In September, the rain falls for 1.5 days. Throughout September, 0.08" (2mm) of precipitation is accumulated. In Nipomo, during the entire year, the rain falls for 39.5 days and collects up to 5.51" (140mm) of precipitation.Daylight
The average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 6:35 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:46 pm PDT.
Sunshine
In September, the average sunshine is 11.3h.UV index
The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 5 during September leads to these advisories:
Make use of precautions - It is urged to ward off sun damage. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the warmest month?
What is the temperature in September?
What is the average humidity in September?
How many days does it rain in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Nipomo, CA
- Average high temperature in September: 82°F
The warmest month (with the highest average high temperature) is September (82°F).
The month with the lowest average high temperature is December (62.2°F).
- Average low temperature in September: 59.7°F
The month with the highest average low temperature is September (59.7°F).
The coldest month (with the lowest average low temperature) is February (45.1°F).
Average pressure in September
Nipomo, CA
- Average pressure in September: 29.91"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.91"Hg).
Average wind speed in September
Nipomo, CA
- Average wind speed in September: 5.3mph
The windiest months (with the highest average wind speed) are April and May (6.6mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Nipomo, CA
- Average humidity in September: 56%
The month with the highest relative humidity is March (67%).
The month with the lowest relative humidity is October (55%).
Average rainfall in September
Nipomo, CA
- Average rainfall in September: 0.08"
The wettest month (with the highest rainfall) is March (1.34").
The driest month (with the least rainfall) is June (0").
Average rainfall days in September
Nipomo, CA
- Average rainfall days in September: 1.5 days
The month with the highest number of rainy days is March (7.2 days).
The month with the least rainy days is June (0.7 days).
Average daylight in September /
Average sunshine in September
Nipomo, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 11h and 2min
The months with the most sunshine are June, July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 6h and 24min).
Average sunshine days in September
Nipomo, CA
- Average sunshine days in September: 28.5 days
The month with the most sunshine days is August (29.7 days).
The month with the least sunshine days is February (21.6 days).
Average UV index in September
Nipomo, CA
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in September
Nipomo, CA
- Average cloud cover in September: 7
The months with the most cloud cover are February and March (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in September
Nipomo, CA
- 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).
Nipomo, California, USA
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