September weather forecastTwin Lakes, CA
September
Weather in September
Ocean temperature
August and September, with an average ocean temperature of 58.1°F (14.5°C), are months with the warmest seawater in Twin Lakes, California.Note: Caution: 58.1°F (14.5°C) temperatures below 50°F (10°C) during swimming can result in intense cold shock and quickened breathing.
Daylight
In September, the average length of the day is 12h and 24min.On the first day of September, sunrise is at 6:39 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 6:52 pm PDT.
Updated: Jul 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
The months with the warmest seawater are August and September, with an average ocean temperature of 58.1°F (14.5°C).
In Twin Lakes, the average seawater temperature in September is 58.1°F (14.5°C). Swimming in 58.1°F (14.5°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.
The average day length in September is 12h and 24min.
In September, on the first day of the month, sunrise is at 6:39 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 6:52 pm PDT.
Average sea temperature in September
Twin Lakes, CA
- Average sea temperature in September: 58.1°F
The best months for swimming (with the highest average sea temperature) are August and September (58.1°F).
The coldest month (with the lowest average sea temperature) is April (53.8°F).
Average daylight in September
Twin Lakes, CA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
