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 Aptos, the months of August and September are known for the peak temperatures, reaching an average high of 73°F (22.8°C).Humidity
In Aptos, the average relative humidity in September is 70%.Rainfall
In September, in Aptos, the rain falls for 2.7 days. Throughout September, 0.12" (3mm) of precipitation is accumulated. In Aptos, during the entire year, the rain falls for 77.9 days and collects up to 14.45" (367mm) of precipitation.Daylight
In September, the average length of the day is 12h and 24min.On the first day of the month, sunrise is at 6:39 am and sunset at 7:35 pm. On the last day of September, sunrise is at 7:02 am and sunset at 6:51 pm PDT.
Sunshine
In September, the average sunshine is 10.9h.UV index
The months with the highest UV index are June through September, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: A daily high UV index of 5 in September leads to these guidelines:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Frequently asked questions
What time of the year is the hottest in Aptos?
What are September temperatures in Aptos?
What is the average humidity in September in Aptos?
How much does it rain in Aptos in September?
What is the average length of the day in September in Aptos?
When are sunrise and sunset in September in Aptos?
How long on average sun shines in September in Aptos?
What are the months with the highest UV index in Aptos?
What is the UV index reading in September in Aptos?
Average temperature in September
Aptos, CA
- Average high temperature in September: 73°F
The warmest months (with the highest average high temperature) are August and September (73°F).
The month with the lowest average high temperature is December (57.2°F).
- Average low temperature in September: 55.2°F
The month with the highest average low temperature is September (55.2°F).
The coldest month (with the lowest average low temperature) is February (45.5°F).
Average pressure in September
Aptos, CA
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).
Average wind speed in September
Aptos, CA
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in September
Aptos, CA
- Average humidity in September: 70%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (68%).
Average rainfall in September
Aptos, CA
- Average rainfall in September: 0.12"
The wettest month (with the highest rainfall) is December (2.8").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in September
Aptos, CA
- Average rainfall days in September: 2.7 days
The month with the highest number of rainy days is March (13.4 days).
The month with the least rainy days is August (1.2 days).
Average daylight in September /
Average sunshine in September
Aptos, CA
- Average daylight in September: 12h and 2min
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).
- Average sunshine in September: 10h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in September
Aptos, CA
- Average sunshine days in September: 26.3 days
The month with the most sunshine days is August (27.8 days).
The month with the least sunshine days is March (16.4 days).
Average UV index in September
Aptos, CA
- Average UV index in September: 5
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are February and November (UV index 3).
Average cloud cover in September
Aptos, CA
- Average cloud cover in September: 15
The month with the most cloud cover is March (Cloud cover 38).
The months with the least cloud cover are July and September (Cloud cover 15).
Average visibility in September
Aptos, 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).
Aptos, California, USA
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