September weather forecastMartinópolis, Brazil

September

Weather in September

September, the first month of the spring in Martinópolis, is a tropical month, with an average temperature fluctuating between 18.3°C (64.9°F) and 30.4°C (86.7°F).

Temperature

With September's arrival, Martinópolis notes an average high-temperature of a tropical 30.4°C (86.7°F), closely following the trend of the preceding month. Throughout September, Martinópolis braces for a considerable drop from daytime highs, with an average low-temperature of 18.3°C (64.9°F).

Heat index

In September, the heat index is calculated to be a hot 33°C (91.4°F). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.

Humidity

The months with the lowest humidity are August and September, with an average relative humidity of 59%.

Rainfall

In September, the rain falls for 9.6 days. Throughout September, 50mm (1.97") of precipitation is accumulated. In Martinópolis, during the entire year, the rain falls for 196.8 days and collects up to 1260mm (49.61") of precipitation.

Daylight

The average length of the day in September in Martinópolis, Brazil, is 11h and 59min.
On the first day of the month, sunrise is at 06:33 and sunset at 18:15. On the last day of September, sunrise is at 06:05 and sunset at 18:23 -03.

Sunshine

In September, the average sunshine is 9.1h.

UV index

January through March, June through December, with an average maximum UV index of 6, are months with the highest UV index in Martinópolis. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.
Note: A maximum high UV index of 6 in September translates into the following recommendations:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

Frequently asked questions

September temperatures in Martinópolis, Brazil, vary between a high-temperature of 30.4°C (86.7°F) and a low-temperature of 18.3°C (64.9°F). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is calculated to be 33°C (91.4°F).

The months with the lowest humidity in Martinópolis, Brazil, are August and September, with an average relative humidity of 59%.

In Martinópolis, Brazil, the average relative humidity in September is 59%.

In September, the rain falls for 9.6 days. Throughout September, 50mm (1.97") of precipitation is accumulated.

In Martinópolis, Brazil, the average day length in September is 11h and 59min.

In September, on the first day of the month, sunrise is at 06:33 and sunset at 18:15. On the last day of the month, in Martinópolis, Brazil, sunrise is at 06:05 and sunset at 18:23 -03.

The average sunshine duration in September in Martinópolis, Brazil, is 9.1h.

The months with the highest UV index in Martinópolis are January through March, June through December, with an average maximum UV index of 6.

In September, the average daily maximum UV index in Martinópolis, Brazil, is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Martinópolis, Brazil

  • Average high temperature in September: 30.4°C

The warmest month (with the highest average high temperature) is October (30.9°C).
The month with the lowest average high temperature is June (24.1°C).

  • Average low temperature in September: 18.3°C

The months with the highest average low temperature are January and December (21.3°C).
The coldest months (with the lowest average low temperature) are June and July (15.3°C).

Average pressure in September
Martinópolis, Brazil

  • Average pressure in September: 1014.1mbar

The month with the highest atmospheric pressure is July (1018.1mbar).
The month with the lowest atmospheric pressure is December (1009.6mbar).

Average wind speed in September
Martinópolis, Brazil

  • Average wind speed in September: 10.6km/h

The windiest month (with the highest average wind speed) is August (11.1km/h).
The calmest months (with the lowest average wind speed) are February and March (7.8km/h).

Average humidity in September
Martinópolis, Brazil

  • Average humidity in September: 59%

The months with the highest relative humidity are February and March (84%).
The months with the lowest relative humidity are August and September (59%).

Average rainfall in September
Martinópolis, Brazil

  • Average rainfall in September: 50mm

The wettest month (with the highest rainfall) is January (233mm).
The driest month (with the least rainfall) is July (29mm).

Average rainfall days in September
Martinópolis, Brazil

  • Average rainfall days in September: 9.6 days

The month with the highest number of rainy days is January (28.5 days).
The month with the least rainy days is August (5.3 days).

Average daylight in September /
Average sunshine in September
Martinópolis, Brazil

  • Average daylight in September: 12h and 0min

The month with the longest days is December (Average daylight: 13h and 30min).
The month with the shortest days is June (Average daylight: 10h and 48min).

  • Average sunshine in September: 9h and 6min

The month with the most sunshine is August (Average sunshine: 9h and 24min).
The month with the least sunshine is January (Average sunshine: 7h and 24min).

Average sunshine days in September
Martinópolis, Brazil

  • Average sunshine days in September: 19.1 days

The month with the most sunshine days is August (25.1 days).
The month with the least sunshine days is January (2 days).

Average UV index in September
Martinópolis, Brazil

  • Average UV index in September: 6

The months with the highest UV index are January, February, March, June, July, August, September, October, November and December (UV index 6).
The months with the lowest UV index are April and May (UV index 5).

Average cloud cover in September
Martinópolis, Brazil

  • Average cloud cover in September: 21

The month with the most cloud cover is January (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 17).

Average visibility in September
Martinópolis, Brazil

  • Average visibility in September: 10km

The months with the highest visibility are August and September (10km).
The months with the lowest visibility are January, February, March, April, May and June (8km).