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
Tierrasanta's average high-temperature in September is a still moderately hot 78.6°F (25.9°C), marking an insignificant difference from the 79.3°F (26.3°C) of August. In Tierrasanta, an average low-temperature of 64.4°F (18°C) is recorded during September nights.Humidity
In September, the average relative humidity is 65%.Rainfall
In September, in Tierrasanta, the rain falls for 4.2 days. Throughout September, 0.31" (8mm) of precipitation is accumulated. In Tierrasanta, during the entire year, the rain falls for 57.9 days and collects up to 7.48" (190mm) of precipitation.Daylight
In Tierrasanta, the average length of the day in September is 12h and 22min.On the first day of September in Tierrasanta, sunrise is at 6:23 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 6:33 pm PDT.
Sunshine
The average sunshine in September in Tierrasanta, California, is 10.3h.UV index
July through September, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.Note: The average daily UV index of 6 in September transforms into the following instructions:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Frequently asked questions
What are the temperatures in Tierrasanta in September?
What is the average humidity in September in Tierrasanta?
How much does it rain in Tierrasanta in September?
What is the average length of the day in September in Tierrasanta?
When is the sunrise / sunset in September in Tierrasanta?
How many hours of sunshine does Tierrasanta have in September?
What are the months with the highest UV index in Tierrasanta?
What is the UV index intensity in September in Tierrasanta?
Average temperature in September
Tierrasanta, CA
- Average high temperature in September: 78.6°F
The warmest month (with the highest average high temperature) is August (79.3°F).
The month with the lowest average high temperature is December (63.5°F).
- Average low temperature in September: 64.4°F
The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (50.2°F).
Average pressure in September
Tierrasanta, CA
- Average pressure in September: 29.88"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are June and September (29.88"Hg).
Average wind speed in September
Tierrasanta, CA
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is April (6mph).
The calmest month (with the lowest average wind speed) is October (4.8mph).
Average humidity in September
Tierrasanta, CA
- Average humidity in September: 65%
The months with the highest relative humidity are May and June (71%).
The month with the lowest relative humidity is November (57%).
Average rainfall in September
Tierrasanta, CA
- Average rainfall in September: 0.31"
The wettest month (with the highest rainfall) is February (1.46").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in September
Tierrasanta, CA
- Average rainfall days in September: 4.2 days
The month with the highest number of rainy days is March (7.1 days).
The month with the least rainy days is June (2.2 days).
Average daylight in September /
Average sunshine in September
Tierrasanta, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 10h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).
Average sunshine days in September
Tierrasanta, CA
- Average sunshine days in September: 22.4 days
The month with the most sunshine days is January (24.8 days).
The month with the least sunshine days is February (20.2 days).
Average UV index in September
Tierrasanta, CA
- Average UV index in September: 6
The months with the highest UV index are July, August and September (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
Tierrasanta, CA
- Average cloud cover in September: 11
The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 8).
Average visibility in September
Tierrasanta, 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).
Tierrasanta, California, USA
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