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 sea temperature 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
With the onset of September, the average high-temperature registers at a still hot 30.2°C (86.4°F), subtly different from August's 30°C (86°F). During the nights in September, Caucaia experiences a consistent average temperature of 24.2°C (75.6°F).Heat index
For most parts of September, the heat index is evaluated at a torrid 36°C (96.8°F). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'real feel' or 'feels like', blends air temperature and moisture content to represent the felt temperature to humans. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.
Humidity
The months with the lowest humidity are August and September, with an average relative humidity of 71%.Rainfall
September and October are months with the least rain in Caucaia when the rain falls for 7.4 days and typically aggregates up to 5mm (0.2") of rain.Sea temperature
With an average sea temperature of 26.6°C (79.9°F), September is the month with the coldest seawater in Caucaia.Note: Water activities including swimming and diving at temperatures from 25°C (77°F) to 29°C (84.2°F) are deemed very pleasurable and enjoyable for extended periods, devoid of discomfort.
Daylight
In Caucaia, Brazil, the average length of the day in September is 12h and 5min.On the first day of the month, sunrise is at 05:33 and sunset at 17:35. On the last day of September, sunrise is at 05:20 and sunset at 17:28 -03.
Sunshine
The average sunshine in September is 8.7h.UV index
January, February, May through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 7 in September, converts into the following recommendations:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Caution! Sand and water surfaces escalate the UV intensity from the Sun.
Frequently asked questions
Is it hot in Caucaia during September?
What are the least humid months in Caucaia?
What is the average humidity in September in Caucaia?
What is the driest month in Caucaia?
How much does it rain in Caucaia in September?
What month is the sea coldest in Caucaia?
How warm is the water in September in Caucaia?
How many hours of daylight does Caucaia have in September?
When is the sunrise / sunset in September in Caucaia?
How long on average sun shines in September in Caucaia?
When is the highest UV index in Caucaia?
What is the UV index intensity in September in Caucaia?
Average temperature in September
Caucaia, Brazil
- Average high temperature in September: 30.2°C
The warmest months (with the highest average high temperature) are October, November and December (30.4°C).
The month with the lowest average high temperature is July (29.5°C).
- Average low temperature in September: 24.2°C
The month with the highest average low temperature is December (25.6°C).
The coldest month (with the lowest average low temperature) is July (23.5°C).
Average pressure in September
Caucaia, Brazil
- Average pressure in September: 1013mbar
The month with the highest atmospheric pressure is July (1013.8mbar).
The month with the lowest atmospheric pressure is November (1010.3mbar).
Average wind speed in September
Caucaia, Brazil
- Average wind speed in September: 25.2km/h
The windiest month (with the highest average wind speed) is September (25.2km/h).
The calmest month (with the lowest average wind speed) is April (14.5km/h).
Average humidity in September
Caucaia, Brazil
- Average humidity in September: 71%
The months with the highest relative humidity are April and May (79%).
The months with the lowest relative humidity are August and September (71%).
Average rainfall in September
Caucaia, Brazil
- Average rainfall in September: 5mm
The wettest month (with the highest rainfall) is April (180mm).
The driest months (with the least rainfall) are September and October (5mm).
Average rainfall days in September
Caucaia, Brazil
- Average rainfall days in September: 7.4 days
The month with the highest number of rainy days is April (28 days).
The month with the least rainy days is September (7.4 days).
Average sea temperature in September
Caucaia, Brazil
- Average sea temperature in September: 26.6°C
The best month for swimming (with the highest average sea temperature) is April (28.9°C).
The coldest month (with the lowest average sea temperature) is September (26.6°C).
Average daylight in September /
Average sunshine in September
Caucaia, Brazil
- Average daylight in September: 12h and 1min
The month with the longest days is December (Average daylight: 12h and 18min).
The month with the shortest days is June (Average daylight: 11h and 54min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is August (Average sunshine: 9h and 6min).
The month with the least sunshine is February (Average sunshine: 7h and 30min).
Average sunshine days in September
Caucaia, Brazil
- Average sunshine days in September: 17.1 days
The month with the most sunshine days is September (17.1 days).
The month with the least sunshine days is April (1.2 days).
Average UV index in September
Caucaia, Brazil
- Average UV index in September: 7
The months with the highest UV index are January, February, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are March and April (UV index 6).
Average cloud cover in September
Caucaia, Brazil
- Average cloud cover in September: 24
The months with the most cloud cover are March and April (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in September
Caucaia, Brazil
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Caucaia, Brazil
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