September weather forecast
Buena Park, CA

Share

Weather in September

The first month of the autumn, September, is still a warm month in Buena Park, California, with an average temperature ranging between min 64.9°F (18.3°C) and max 82.2°F (27.9°C).

Temperature

The average high-temperature during September registers at a still moderately hot 82.2°F (27.9°C), closely corresponding to the preceding month. Buena Park records an average nighttime low of 64.9°F (18.3°C) in September.

Heat index

September's average heat index is calculated to be 84.2°F (29°C). Unrelenting activity during exposure could cause fatigue and potentially lead to heat cramps.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is an aggregate value of air's warmth and moisture to show the human-felt temperature. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.

Humidity

In Buena Park, California, the average relative humidity in September is 58%.

Rainfall

In September, the rain falls for 2.8 days. Throughout September, 0.12" (3mm) of precipitation is accumulated. In Buena Park, during the entire year, the rain falls for 44.9 days and collects up to 4.76" (121mm) of precipitation.

Daylight

The average length of the day in September is 12h and 22min.
On the first day of the month, sunrise is at 6:26 am and sunset at 7:17 pm. On the last day of September, sunrise is at 6:46 am and sunset at 6:37 pm PDT.

Sunshine

The average sunshine in September is 10.6h.

UV index

June through September, with an average maximum UV index of 6, are months with the highest UV index in Buena Park. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: An average maximum UV index of 6 in September leads to these recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.

Frequently asked questions

What are September temperatures?

In September, the average high-temperature and low-temperature are 82.2°F (27.9°C) and 64.9°F (18.3°C) respectively. In September, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is calculated to be 84.2°F (29°C).

What is the average humidity in September?

In Buena Park, the average relative humidity in September is 58%.

How many days does it rain in September?

In Buena Park, during September, the rain falls for 2.8 days and regularly aggregates up to 0.12" (3mm) of precipitation.

What is the average length of the day in September?

In September, the average day length is 12h and 22min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 6:26 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 6:37 pm PDT.

How long on average sun shines in September?

In September, the average sunshine duration is 10.6h.

What are the months with the highest UV index?

June through September, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index intensity in September in Buena Park?

The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Buena Park, CA

Average temperature in September - Buena Park, CA
  • Average high temperature in September: 82.2°F

The warmest month (with the highest average high temperature) is August (82.9°F).
The month with the lowest average high temperature is December (64.8°F).

  • Average low temperature in September: 64.9°F

The month with the highest average low temperature is August (65.5°F).
The coldest month (with the lowest average low temperature) is February (50.9°F).

Average pressure in September
Buena Park, CA

Average pressure in September - Buena Park, CA
  • Average pressure in September: 29.89"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in September
Buena Park, CA

Average wind speed in September - Buena Park, CA
  • Average wind speed in September: 4.8mph

The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest months (with the lowest average wind speed) are September and October (4.8mph).

Average humidity in September
Buena Park, CA

Average humidity in September - Buena Park, CA
  • Average humidity in September: 58%

The month with the highest relative humidity is June (66%).
The month with the lowest relative humidity is November (51%).

Average rainfall in September
Buena Park, CA

Average rainfall in September - Buena Park, CA
  • Average rainfall in September: 0.12"

The wettest month (with the highest rainfall) is December (1.14").
The driest month (with the least rainfall) is June (0.04").

Average rainfall days in September
Buena Park, CA

Average rainfall days in September - Buena Park, CA
  • Average rainfall days in September: 2.8 days

The month with the highest number of rainy days is March (6.7 days).
The month with the least rainy days is June (1.2 days).

Average daylight in September /
Average sunshine in September
Buena Park, CA

Average daylight in September / Average sunshine in September - Buena Park, CA
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in September: 10h and 4min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).

Average sunshine days in September
Buena Park, CA

Average sunshine days in September - Buena Park, CA
  • Average sunshine days in September: 25.1 days

The month with the most sunshine days is August (26.8 days).
The month with the least sunshine days is February (21.9 days).

Average UV index in September
Buena Park, CA

Average UV index in September - Buena Park, CA
  • Average UV index in September: 6

The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are February, November and December (UV index 4).

Average cloud cover in September
Buena Park, CA

Average cloud cover in September - Buena Park, CA
  • Average cloud cover in September: 9

The month with the most cloud cover is December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 6).

Average visibility in September
Buena Park, CA

Average visibility in September - Buena Park, 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).

Buena Park, California, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location