September weather forecastIaçu, Brazil
September
Weather in September
The first month of the spring, September, is still a warm month in Iaçu, Brazil, with an average temperature ranging between min 18.9°C (66°F) and max 29.5°C (85.1°F).Temperature
The shift into September finds Iaçu at an average high-temperature of a still moderately hot 29.5°C (85.1°F), closely comparable to August's conditions. Throughout the month of September, the nighttime temperature dips to an average of 18.9°C (66°F).Heat index
The heat index for September is computed to be a tropical 34°C (93.2°F). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.Be aware that heat index ratings are designed for shaded locations and minor breezes. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', gives an indication of how one might feel in terms of heat after considering humidity. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Humidity
In Iaçu, the average relative humidity in September is 69%.Rainfall
The month with the least rainfall is September, when the rain falls for 13 days and typically collects 10mm (0.39") of precipitation.Daylight
The average length of the day in September is 12h and 2min.On the first day of the month, sunrise is at 05:44 and sunset at 17:36. On the last day of September, sunrise is at 05:24 and sunset at 17:36 -03.
Sunshine
The average sunshine in September is 6.5h.UV index
In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The UV index of 6 during September translates into the following guidance:
Deflect overexposure. Sun protection is a necessity. 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. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Iaçu, Brazil
- Average high temperature in September: 29.5°C
The warmest month (with the highest average high temperature) is March (32.4°C).
The month with the lowest average high temperature is July (27.3°C).
- Average low temperature in September: 18.9°C
The month with the highest average low temperature is November (21.2°C).
The coldest months (with the lowest average low temperature) are July and August (17.8°C).
Average pressure in September
Iaçu, Brazil
- Average pressure in September: 1017.5mbar
The month with the highest atmospheric pressure is July (1019.1mbar).
The month with the lowest atmospheric pressure is December (1012.9mbar).
Average wind speed in September
Iaçu, Brazil
- Average wind speed in September: 14.1km/h
The windiest month (with the highest average wind speed) is October (14.5km/h).
The calmest month (with the lowest average wind speed) is April (9.6km/h).
Average humidity in September
Iaçu, Brazil
- Average humidity in September: 69%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (68%).
Average rainfall in September
Iaçu, Brazil
- Average rainfall in September: 10mm
The wettest month (with the highest rainfall) is December (80mm).
The driest month (with the least rainfall) is September (10mm).
Average rainfall days in September
Iaçu, Brazil
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is April (18.6 days).
The month with the least rainy days is August (12.8 days).
Average daylight in September /
Average sunshine in September
Iaçu, Brazil
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 12h and 54min).
The month with the shortest days is June (Average daylight: 11h and 24min).
- Average sunshine in September: 6h and 30min
The month with the most sunshine is February (Average sunshine: 8h and 48min).
The month with the least sunshine is July (Average sunshine: 4h and 30min).
Average sunshine days in September
Iaçu, Brazil
- Average sunshine days in September: 12.8 days
The month with the most sunshine days is August (13.1 days).
The months with the least sunshine days are April and November (9 days).
Average UV index in September
Iaçu, Brazil
- Average UV index in September: 6
The months with the highest UV index are January, February and October (UV index 7).
The month with the lowest UV index is June (UV index 5).
Average cloud cover in September
Iaçu, Brazil
- Average cloud cover in September: 45
The month with the most cloud cover is May (Cloud cover 58).
The month with the least cloud cover is September (Cloud cover 45).
Average visibility in September
Iaçu, Brazil
- Average visibility in September: 10km
The months with the highest visibility are September, October and November (10km).
The months with the lowest visibility are January, April, May, June and July (8km).
