September weather forecastVigia, Brazil
September
Weather in September
The first month of the spring, September, is still a hot month in Vigia, Brazil, with temperature in the range of an average low of 24.5°C (76.1°F) and an average high of 31.1°C (88°F).Temperature
Vigia, Brazil, registers an average high-temperature of a still hot 31.1°C (88°F) at the commencement of September, closely related to the preceding month. Throughout September, Vigia witnesses a consistent average low-temperature of 24.5°C (76.1°F).Heat index
Throughout September, the heat index is computed to be an extremely hot 41°C (105.8°F). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.It is crucial to understand that heat index figures are for shade and gentle wind conditions. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is an estimation of the warmth sensation when considering humidity levels. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.
Humidity
In Vigia, the average relative humidity in September is 78%.Rainfall
In Vigia, in September, it is raining for 20.4 days, with typically 51mm (2.01") of accumulated precipitation. Throughout the year, there are 315.6 rainfall days, and 2313mm (91.06") of precipitation is accumulated.Sea temperature
In September, the average sea temperature in Vigia is 28.6°C (83.5°F).Note: Water surface temperatures from 25°C (77°F) to 29°C (84.2°F) are considered optimal and extremely delightful for long-lasting pleasure in any water activity.
Daylight
In September, the average length of the day in Vigia is 12h and 7min.On the first day of September, sunrise is at 06:09 and sunset at 18:15. On the last day of the month, sunrise is at 05:58 and sunset at 18:05 -03.
Sunshine
The average sunshine in September in Vigia, Brazil, is 9.1h.UV index
The months with the highest UV index are January, June through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 7 in September converts into the following recommendations:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Stay vigilant! UV rays get a boost in intensity due to sand and water reflections.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Vigia, Brazil
- Average high temperature in September: 31.1°C
The warmest month (with the highest average high temperature) is October (31.5°C).
The month with the lowest average high temperature is March (28.7°C).
- Average low temperature in September: 24.5°C
The month with the highest average low temperature is November (25.3°C).
The coldest month (with the lowest average low temperature) is July (23.9°C).
Average pressure in September
Vigia, Brazil
- Average pressure in September: 1011.7mbar
The month with the highest atmospheric pressure is July (1012.7mbar).
The month with the lowest atmospheric pressure is November (1009.2mbar).
Average wind speed in September
Vigia, Brazil
- Average wind speed in September: 14.3km/h
The windiest month (with the highest average wind speed) is November (14.7km/h).
The calmest month (with the lowest average wind speed) is May (9.9km/h).
Average humidity in September
Vigia, Brazil
- Average humidity in September: 78%
The month with the highest relative humidity is April (87%).
The months with the lowest relative humidity are October and November (76%).
Average rainfall in September
Vigia, Brazil
- Average rainfall in September: 51mm
The wettest month (with the highest rainfall) is March (359mm).
The driest month (with the least rainfall) is October (41mm).
Average rainfall days in September
Vigia, Brazil
- Average rainfall days in September: 20.4 days
The month with the highest number of rainy days is March (30.7 days).
The months with the least rainy days are October and November (18.8 days).
Average sea temperature in September
Vigia, Brazil
- Average sea temperature in September: 28.6°C
The best months for swimming (with the highest average sea temperature) are January, May, June, July, August and November (28.8°C).
The coldest month (with the lowest average sea temperature) is October (28.4°C).
Average daylight in September /
Average sunshine in September
Vigia, Brazil
- Average daylight in September: 12h and 6min
The month with the longest days is December (Average daylight: 12h and 12min).
The month with the shortest days is June (Average daylight: 12h and 6min).
- Average sunshine in September: 9h and 6min
The month with the most sunshine is October (Average sunshine: 10h and 24min).
The months with the least sunshine are February and April (Average sunshine: 6h and 48min).
Average sunshine days in September
Vigia, Brazil
- Average sunshine days in September: 5.9 days
The month with the most sunshine days is October (8.8 days).
The months with the least sunshine days are February, March and April (0.2 days).
Average UV index in September
Vigia, Brazil
- Average UV index in September: 7
The months with the highest UV index are January, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are February, March, April and May (UV index 6).
Average cloud cover in September
Vigia, Brazil
- Average cloud cover in September: 26
The month with the most cloud cover is April (Cloud cover 53).
The month with the least cloud cover is September (Cloud cover 26).
Average visibility in September
Vigia, Brazil
- Average visibility in September: 10km
The months with the highest visibility are August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June and July (9km).
