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 Laguna Niguel, September is the warmest month, with temperatures averaging a high of 77.4°F (25.2°C) and a low of 63.1°F (17.3°C).Humidity
The average relative humidity in September is 68%.Rainfall
In Laguna Niguel, during September, the rain falls for 5.6 days and regularly aggregates up to 0.39" (10mm) of precipitation. Throughout the year, in Laguna Niguel, there are 69 rainfall days, and 9.09" (231mm) of precipitation is accumulated.Daylight
In Laguna Niguel, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:25 am and sunset at 7:15 pm. On the last day of September, sunrise is at 6:45 am and sunset at 6:36 pm PDT.
Sunshine
In September, the average sunshine is 10.3h.UV index
The months with the highest UV index are July through September, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the hottest?
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?
What time are sunrise and sunset in September?
How many hours of sunshine does Laguna Niguel have in September?
When is the highest UV index?
What is the UV index reading in September?
Average temperature in September
Laguna Niguel, CA
- Average high temperature in September: 77.4°F
The warmest month (with the highest average high temperature) is September (77.4°F).
The month with the lowest average high temperature is December (62.4°F).
- Average low temperature in September: 63.1°F
The month with the highest average low temperature is August (63.3°F).
The coldest month (with the lowest average low temperature) is February (50°F).
Average pressure in September
Laguna Niguel, CA
- Average pressure in September: 29.89"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Laguna Niguel, CA
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest months (with the lowest average wind speed) are August, September and October (5mph).
Average humidity in September
Laguna Niguel, CA
- Average humidity in September: 68%
The month with the highest relative humidity is June (74%).
The month with the lowest relative humidity is November (59%).
Average rainfall in September
Laguna Niguel, CA
- Average rainfall in September: 0.39"
The wettest month (with the highest rainfall) is December (1.85").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in September
Laguna Niguel, CA
- Average rainfall days in September: 5.6 days
The month with the highest number of rainy days is March (7.8 days).
The month with the least rainy days is June (3 days).
Average daylight in September /
Average sunshine in September
Laguna Niguel, 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 August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).
Average sunshine days in September
Laguna Niguel, CA
- Average sunshine days in September: 21.5 days
The month with the most sunshine days is January (24.7 days).
The month with the least sunshine days is May (19.5 days).
Average UV index in September
Laguna Niguel, 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
Laguna Niguel, CA
- Average cloud cover in September: 14
The month with the most cloud cover is March (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 11).
Average visibility in September
Laguna Niguel, 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).
Laguna Niguel, California, USA
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