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
September's advent notes a subtle adjustment in average high-temperature to a still hot 88.7°F (31.5°C) from August. September in Guasti presents a pronounced difference from daytime highs, with a consistent average low-temperature of 64.2°F (17.9°C).Heat index
The heat index for September is appraised at a hot 89.6°F (32°C). If one sustains activity during exposure, it could lead to a sense of fatigue, with a chance of heat cramps.In the scope of the heat index, its values resonate with shade and light wind conditions. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'real feel', represents the fusion of temperature and moisture in the air to suggest how warm it feels. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Humidity
In September, the average relative humidity in Guasti is 45%.Rainfall
In Guasti, during September, the rain falls for 1.9 days and regularly aggregates up to 0.08" (2mm) of precipitation. Throughout the year, there are 46.6 rainfall days, and 6.54" (166mm) of precipitation is accumulated.Daylight
In Guasti, the average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 6:24 am and sunset at 7:15 pm. On the last day of the month, 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
The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the average person.Note: In September, the UV index of 6 transforms into the following advice:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Experience reduced UV exposure by about half when donning a wide-brim hat.
Frequently asked questions
How hot does it get in Guasti in September?
What is the average humidity in September in Guasti?
How many days does it rain in September in Guasti?
What is the average length of the day in September in Guasti?
What time are sunrise and sunset in September in Guasti?
How many hours of sunshine does Guasti have in September?
What is the UV index intensity in September in Guasti?
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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