September weather forecastBarcarena, Brazil
September
Weather in September
September, the first month of the spring in Barcarena, is still a tropical month, with an average temperature varying between 23.3°C (73.9°F) and 33.5°C (92.3°F).Temperature
The arrival of September sees an average high-temperature of a still tropical 33.5°C (92.3°F), hardly diverging from August's 32.8°C (91°F). During September, Barcarena records an average temperature of 23.3°C (73.9°F) at night.Heat index
For most parts of September, the heat index is estimated at a life-threatening hot 47°C (116.6°F). Caution: Heat cramps along with heat exhaustion are expected. Sustained activity could lead to heatstroke.Factoring in the heat index, values are geared towards shaded areas with light breezes. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a value derived by merging air temperature with the humidity to convey how the climate feels. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. 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 highly critical to 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.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.
Humidity
In Barcarena, the average relative humidity in September is 74%.Rainfall
The month with the least rainfall in Barcarena is September, when the rain falls for 19.1 days and typically collects 36mm (1.42") of precipitation.Sea temperature
The months with the coldest seawater are September and October, with an average sea temperature of 27.8°C (82°F).Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.
Daylight
In September, the average length of the day in Barcarena is 12h and 6min.On the first day of the month, sunrise is at 06:11 and sunset at 18:16. On the last day of September, sunrise is at 06:00 and sunset at 18:07 -03.
Sunshine
The average sunshine in September is 8.7h.UV index
The months with the highest UV index are January through March, May through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum UV index of 7 in September translates into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Note! The Sun's UV radiation gets intensified with the reflection from sand and water.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Barcarena, Brazil
- Average high temperature in September: 33.5°C
The warmest months (with the highest average high temperature) are October and November (33.7°C).
The month with the lowest average high temperature is March (29.8°C).
- Average low temperature in September: 23.3°C
The month with the highest average low temperature is November (24.2°C).
The coldest month (with the lowest average low temperature) is July (22.5°C).
Average pressure in September
Barcarena, Brazil
- Average pressure in September: 1011.6mbar
The month with the highest atmospheric pressure is July (1012.7mbar).
The month with the lowest atmospheric pressure is November (1009.1mbar).
Average wind speed in September
Barcarena, Brazil
- Average wind speed in September: 8.7km/h
The windiest months (with the highest average wind speed) are October and November (9.3km/h).
The calmest month (with the lowest average wind speed) is April (5.9km/h).
Average humidity in September
Barcarena, Brazil
- Average humidity in September: 74%
The months with the highest relative humidity are March and April (89%).
The months with the lowest relative humidity are October and November (72%).
Average rainfall in September
Barcarena, Brazil
- Average rainfall in September: 36mm
The wettest month (with the highest rainfall) is April (201mm).
The driest month (with the least rainfall) is September (36mm).
Average rainfall days in September
Barcarena, Brazil
- Average rainfall days in September: 19.1 days
The month with the highest number of rainy days is March (27.6 days).
The month with the least rainy days is August (18.2 days).
Average sea temperature in September
Barcarena, Brazil
- Average sea temperature in September: 27.8°C
The best months for swimming (with the highest average sea temperature) are January, March and May (28.3°C).
The coldest months (with the lowest average sea temperature) are September and October (27.8°C).
Average daylight in September /
Average sunshine in September
Barcarena, 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 0min).
- Average sunshine in September: 8h and 42min
The month with the most sunshine is October (Average sunshine: 10h and 6min).
The month with the least sunshine is March (Average sunshine: 6h and 24min).
Average sunshine days in September
Barcarena, Brazil
- Average sunshine days in September: 7.9 days
The month with the most sunshine days is August (10.6 days).
The month with the least sunshine days is February (2.6 days).
Average UV index in September
Barcarena, Brazil
- Average UV index in September: 7
The months with the highest UV index are January, February, March, May, June, July, August, September, October, November and December (UV index 7).
The month with the lowest UV index is April (UV index 6).
Average cloud cover in September
Barcarena, Brazil
- Average cloud cover in September: 31
The month with the most cloud cover is April (Cloud cover 63).
The month with the least cloud cover is September (Cloud cover 31).
Average visibility in September
Barcarena, Brazil
- Average visibility in September: 9km
The months with the highest visibility are October and November (10km).
The month with the lowest visibility is April (6km).
