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 sea temperature 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
As Manhattan Beach, California, steps into September, the average high-temperature holds at a still warm 76.5°F (24.7°C), hinting at a minor fluctuation from the prior month. An average low-temperature of 64.2°F (17.9°C) is noted during the nights in September.Humidity
In Manhattan Beach, California, the average relative humidity in September is 67%.Rainfall
In Manhattan Beach, during September, the rain falls for 3.5 days and regularly aggregates up to 0.28" (7mm) of precipitation. Throughout the year, there are 54.5 rainfall days, and 7.91" (201mm) of precipitation is accumulated.Ocean temperature
In Manhattan Beach, in September, the average water temperature is 66.7°F (19.3°C).Note: Swimming is not a pleasant activity for most when the water temperature is 66.7°F (19.3°C). As the water temperature drops from 69.8°F (21°C) to 59°F (15°C), breathing becomes more difficult to control.
Daylight
The average length of the day in September is 12h and 22min.On the first day of September in Manhattan Beach, sunrise is at 6:27 am and sunset at 7:18 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:38 pm PDT.
Sunshine
The average sunshine in September is 10.4h.UV index
July through September, with an average maximum UV index of 6, are months with the highest UV index in Manhattan Beach. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 6 in September interprets into the following recommendations:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Frequently asked questions
What is the temperature in September in Manhattan Beach?
What is the average humidity in September in Manhattan Beach?
How much does it rain in Manhattan Beach in September?
What is the ocean temperature in September in Manhattan Beach?
What is the average length of the day in September in Manhattan Beach?
When is the sunrise / sunset in September in Manhattan Beach?
How many hours of sunshine does Manhattan Beach have in September?
When is the highest UV index in Manhattan Beach?
How high is the UV index in September in Manhattan Beach?
Average temperature in September
Manhattan Beach, CA
- Average high temperature in September: 76.5°F
The warmest month (with the highest average high temperature) is August (76.6°F).
The month with the lowest average high temperature is December (62.8°F).
- Average low temperature in September: 64.2°F
The months with the highest average low temperature are August and September (64.2°F).
The coldest month (with the lowest average low temperature) is February (52.2°F).
Average pressure in September
Manhattan Beach, CA
- Average pressure in September: 29.9"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.9"Hg).
Average wind speed in September
Manhattan Beach, CA
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest months (with the lowest average wind speed) are August and September (5.2mph).
Average humidity in September
Manhattan Beach, CA
- Average humidity in September: 67%
The month with the highest relative humidity is June (74%).
The month with the lowest relative humidity is November (57%).
Average rainfall in September
Manhattan Beach, CA
- Average rainfall in September: 0.28"
The wettest month (with the highest rainfall) is January (1.5").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in September
Manhattan Beach, CA
- Average rainfall days in September: 3.5 days
The month with the highest number of rainy days is March (6.8 days).
The month with the least rainy days is August (3 days).
Average sea temperature in September
Manhattan Beach, CA
- Average sea temperature in September: 66.7°F
The best months for swimming (with the highest average sea temperature) are July and August (67.9°F).
The coldest month (with the lowest average sea temperature) is January (58.3°F).
Average daylight in September /
Average sunshine in September
Manhattan Beach, 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 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 36min).
Average sunshine days in September
Manhattan Beach, CA
- Average sunshine days in September: 22.3 days
The months with the most sunshine days are January and October (24.9 days).
The month with the least sunshine days is June (19.6 days).
Average UV index in September
Manhattan Beach, 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
Manhattan Beach, CA
- Average cloud cover in September: 12
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 9).
Average visibility in September
Manhattan Beach, 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).
Manhattan Beach, California, USA
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