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 records an average high-temperature of a still hot 86.4°F (30.2°C), indicating a minor variation from the preceding month. Port Richey throughout September, records an average low-temperature of 77°F (25°C).Heat index
The heat index for September is calculated to be a sweltering 98.6°F (37°C). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.Data suggests that the heat index is set for environments in shade and with a light wind. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', shows a temperature sensation when both heat and moisture conditions are combined. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.
Humidity
In Port Richey, the average relative humidity in September is 76%.Rainfall
In Port Richey, in September, during 20.4 rainfall days, 2.95" (75mm) of precipitation is typically accumulated. In Port Richey, during the entire year, the rain falls for 164 days and collects up to 26.57" (675mm) of precipitation.Daylight
In September, the average length of the day is 12h and 19min.On the first day of the month, sunrise is at 7:09 am and sunset at 7:51 pm. On the last day of September, sunrise is at 7:23 am and sunset at 7:17 pm EDT.
Sunshine
In September, the average sunshine is 9.2h.UV index
May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the average person.Note: A maximum high UV index of 7 in September translates into the following recommendations:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
How much 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 are the months with the highest UV index?
What is the UV index reading in September in Port Richey?
Average temperature in September
Port Richey, FL
- Average high temperature in September: 86.4°F
The warmest month (with the highest average high temperature) is August (88.2°F).
The month with the lowest average high temperature is January (65.8°F).
- Average low temperature in September: 77°F
The month with the highest average low temperature is August (79.5°F).
The coldest month (with the lowest average low temperature) is January (53.8°F).
Average pressure in September
Port Richey, FL
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).
Average wind speed in September
Port Richey, FL
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is March (8.9mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in September
Port Richey, FL
- Average humidity in September: 76%
The month with the highest relative humidity is December (77%).
The months with the lowest relative humidity are January, March and May (73%).
Average rainfall in September
Port Richey, FL
- Average rainfall in September: 2.95"
The wettest months (with the highest rainfall) are July and August (4.76").
The driest months (with the least rainfall) are March and November (0.91").
Average rainfall days in September
Port Richey, FL
- Average rainfall days in September: 20.4 days
The month with the highest number of rainy days is July (24.9 days).
The month with the least rainy days is November (6.9 days).
Average daylight in September /
Average sunshine in September
Port Richey, FL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is May (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in September
Port Richey, FL
- Average sunshine days in September: 7.4 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is July (4.3 days).
Average UV index in September
Port Richey, FL
- Average UV index in September: 7
The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is January (UV index 4).
Average cloud cover in September
Port Richey, FL
- Average cloud cover in September: 26
The months with the most cloud cover are January and December (Cloud cover 30).
The month with the least cloud cover is May (Cloud cover 20).
Average visibility in September
Port Richey, FL
- 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).
Port Richey, Florida, USA
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