September weather forecastDionísio, Brazil
September
Weather in September
The first month of the spring, September, is still a warm month in Dionísio, Brazil, with an average temperature fluctuating between 28.3°C (82.9°F) and 16.3°C (61.3°F).Temperature
Dionísio observes a minor difference in average high-temperatures between August's 26.4°C (79.5°F) and September's 28.3°C (82.9°F). The average low-temperature reading in September for Dionísio reflects a significant fall from the daytime highs, stabilizing at an enjoyable 16.3°C (61.3°F).Heat index
Throughout September, the heat index is estimated at a hot 31°C (87.8°F). Enduring exposure and continuous activity might cause a feeling of tiredness and induce heat cramps.Heat index determinations are made taking into account the shade and light air movements. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', embodies the combination of air temperature and moisture content to illustrate perceived heat. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
Humidity
The least humid month is September, with an average relative humidity of 70%.Rainfall
In Dionísio, Brazil, in September, it is raining for 11.4 days, with typically 30mm (1.18") of accumulated precipitation. In Dionísio, Brazil, during the entire year, the rain falls for 208.6 days and collects up to 951mm (37.44") of precipitation.Daylight
In Dionísio, the average length of the day in September is 11h and 59min.On the first day of September, sunrise is at 05:58 and sunset at 17:43. On the last day of the month, sunrise is at 05:32 and sunset at 17:49 -03.
Sunshine
September has the most sunshine of the year, with an average of 8.4h of sunshine.UV index
The months with the highest UV index in Dionísio are January, February, August, September and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The daily maximum UV index of 6 in September interprets into the following advice:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Dionísio, Brazil
- Average high temperature in September: 28.3°C
The warmest month (with the highest average high temperature) is February (28.9°C).
The months with the lowest average high temperature are June and July (24.8°C).
- Average low temperature in September: 16.3°C
The months with the highest average low temperature are January and December (19.3°C).
The coldest month (with the lowest average low temperature) is July (13.4°C).
Average pressure in September
Dionísio, Brazil
- Average pressure in September: 1018.3mbar
The month with the highest atmospheric pressure is July (1021.1mbar).
The month with the lowest atmospheric pressure is December (1013mbar).
Average wind speed in September
Dionísio, Brazil
- Average wind speed in September: 7km/h
The windiest months (with the highest average wind speed) are September and October (7km/h).
The calmest month (with the lowest average wind speed) is May (4.4km/h).
Average humidity in September
Dionísio, Brazil
- Average humidity in September: 70%
The months with the highest relative humidity are March, April and December (86%).
The month with the lowest relative humidity is September (70%).
Average rainfall in September
Dionísio, Brazil
- Average rainfall in September: 30mm
The wettest month (with the highest rainfall) is December (186mm).
The driest month (with the least rainfall) is July (12mm).
Average rainfall days in September
Dionísio, Brazil
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is December (24.8 days).
The month with the least rainy days is July (10 days).
Average daylight in September /
Average sunshine in September
Dionísio, Brazil
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 13h and 18min).
The month with the shortest days is June (Average daylight: 11h and 0min).
- Average sunshine in September: 8h and 24min
The month with the most sunshine is September (Average sunshine: 8h and 24min).
The month with the least sunshine is November (Average sunshine: 6h and 36min).
Average sunshine days in September
Dionísio, Brazil
- Average sunshine days in September: 12.4 days
The month with the most sunshine days is August (16 days).
The month with the least sunshine days is December (3.4 days).
Average UV index in September
Dionísio, Brazil
- Average UV index in September: 6
The months with the highest UV index are January, February, August, September and December (UV index 6).
The months with the lowest UV index are March, April, May, June, July, October and November (UV index 5).
Average cloud cover in September
Dionísio, Brazil
- Average cloud cover in September: 35
The month with the most cloud cover is November (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 35).
Average visibility in September
Dionísio, Brazil
- Average visibility in September: 9km
The months with the highest visibility are August, September and October (9km).
The months with the lowest visibility are January, February, March, April, May and December (7km).
