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
Guasti transitions into September recording an average high-temperature of a still tropical 88.7°F (31.5°C), closely aligning with the preceding month's temperature. Marked by a significant drop from the daytime highs, Guasti's average low-temperature in September stands at a comfortable 64.2°F (17.9°C).Heat index
In September, the average heat index is computed to be a hot 89.6°F (32°C). A sense of exhaustion might occur with extended exposure and activity, potentially causing heat cramps.Bear in mind that the heat index values are determined for shaded areas and light breezes. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a value derived by merging air temperature with the humidity to convey how the climate feels. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
Humidity
In Guasti, the average relative humidity in September is 45%.Rainfall
In Guasti, in September, it is raining for 1.9 days, with typically 0.08" (2mm) of accumulated precipitation. Throughout the year, there are 46.6 rainfall days, and 6.54" (166mm) of precipitation is accumulated.Daylight
The average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:24 am and sunset at 7:15 pm. On the last day of September, sunrise is at 6:44 am and sunset at 6:35 pm PDT.
Sunshine
In Guasti, the average sunshine in September is 10.7h.UV index
In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In September, an average UV index of 6 transforms into the following instructions:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September?
How much does it rain in Guasti in September?
How many hours of daylight does Guasti have in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Guasti, CA
- Average high temperature in September: 88.7°F
The warmest month (with the highest average high temperature) is August (91.9°F).
The month with the lowest average high temperature is December (63°F).
- Average low temperature in September: 64.2°F
The month with the highest average low temperature is August (66.4°F).
The coldest month (with the lowest average low temperature) is February (45.9°F).
Average pressure in September
Guasti, CA
- Average pressure in September: 29.88"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Guasti, CA
- Average wind speed in September: 4.5mph
The windiest month (with the highest average wind speed) is May (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).
Average humidity in September
Guasti, CA
- Average humidity in September: 45%
The months with the highest relative humidity are March and May (54%).
The month with the lowest relative humidity is August (43%).
Average rainfall in September
Guasti, CA
- Average rainfall in September: 0.08"
The wettest months (with the highest rainfall) are February and December (1.42").
The driest months (with the least rainfall) are June and August (0.04").
Average rainfall days in September
Guasti, CA
- Average rainfall days in September: 1.9 days
The month with the highest number of rainy days is March (7.3 days).
The month with the least rainy days is June (1.1 days).
Average daylight in September /
Average sunshine in September
Guasti, 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 4min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The months with the least sunshine are February and December (Average sunshine: 6h and 54min).
Average sunshine days in September
Guasti, CA
- Average sunshine days in September: 26.8 days
The month with the most sunshine days is August (28.6 days).
The month with the least sunshine days is February (21.5 days).
Average UV index in September
Guasti, CA
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Guasti, CA
- Average cloud cover in September: 7
The months with the most cloud cover are February, March and December (Cloud cover 21).
The months with the least cloud cover are July and August (Cloud cover 5).
Average visibility in September
Guasti, 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).
Guasti, California, USA
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