September weather forecastDana Point, CA
September
Weather in September
The first month of the autumn, September, is still a warm month in Dana Point, California, with temperature in the range of an average low of 63.5°F (17.5°C) and an average high of 75.7°F (24.3°C).Temperature
September, having an average high-temperature of 75.7°F (24.3°C) and an average low-temperature of 63.5°F (17.5°C), is the warmest month.Humidity
In September, the average relative humidity in Dana Point is 70%.Rainfall
In Dana Point, California, during September, the rain falls for 5.5 days and regularly aggregates up to 0.39" (10mm) of precipitation. In Dana Point, during the entire year, the rain falls for 71.1 days and collects up to 9.69" (246mm) of precipitation.Ocean temperature
In Dana Point, California, the average seawater temperature in September is 67.1°F (19.5°C).Note: Most people find it challenging to enjoy swimming in water that is 67.1°F (19.5°C). As water temperature falls below 69.8°F (21°C), controlling breathing grows increasingly difficult.
Daylight
The average length of the day in September in Dana Point 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 6:44 am and sunset at 6:36 pm PDT.
Sunshine
In Dana Point, the average sunshine in September is 10.2h.UV index
July through September, with an average maximum UV index of 6, are months with the highest UV index in Dana Point. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In September, the maximum UV index of 6 translates into these guidelines:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Dana Point, CA
- Average high temperature in September: 75.7°F
The warmest month (with the highest average high temperature) is September (75.7°F).
The month with the lowest average high temperature is December (61.9°F).
- Average low temperature in September: 63.5°F
The month with the highest average low temperature is September (63.5°F).
The coldest month (with the lowest average low temperature) is February (51.1°F).
Average pressure in September
Dana Point, CA
- Average pressure in September: 29.89"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are June and September (29.89"Hg).
Average wind speed in September
Dana Point, CA
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is April (6.4mph).
The calmest month (with the lowest average wind speed) is October (5.1mph).
Average humidity in September
Dana Point, CA
- Average humidity in September: 70%
The month with the highest relative humidity is June (76%).
The month with the lowest relative humidity is November (61%).
Average rainfall in September
Dana Point, CA
- Average rainfall in September: 0.39"
The wettest month (with the highest rainfall) is December (1.93").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in September
Dana Point, CA
- Average rainfall days in September: 5.5 days
The month with the highest number of rainy days is March (8.1 days).
The month with the least rainy days is June (3.6 days).
Average sea temperature in September
Dana Point, CA
- Average sea temperature in September: 67.1°F
The best month for swimming (with the highest average sea temperature) is August (68.3°F).
The coldest months (with the lowest average sea temperature) are January and February (58.9°F).
Average daylight in September /
Average sunshine in September
Dana Point, CA
- Average daylight in September: 12h and 24min
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 12min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).
Average sunshine days in September
Dana Point, CA
- Average sunshine days in September: 20.8 days
The month with the most sunshine days is January (24.1 days).
The month with the least sunshine days is February (20.3 days).
Average UV index in September
Dana Point, 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
Dana Point, CA
- Average cloud cover in September: 15
The months with the most cloud cover are March and May (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in September
Dana Point, 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).
