September weather forecastGuaratinguetá, Brazil
September
Weather in September
The first month of the spring, September, is also a moderately hot month in Guaratinguetá, Brazil, with an average temperature varying between 25.5°C (77.9°F) and 13.4°C (56.1°F).Temperature
The onset of September brings an average high-temperature of a still warm 25.5°C (77.9°F), nearly matching the August temperature. During the nights in September, Guaratinguetá records a pronounced shift from the daytime warmth, with a consistent average temperature of 13.4°C (56.1°F).Humidity
September is the least humid month, with an average relative humidity of 75%.Rainfall
In Guaratinguetá, in September, during 13.9 rainfall days, 35mm (1.38") of precipitation is typically accumulated. In Guaratinguetá, during the entire year, the rain falls for 215.1 days and collects up to 760mm (29.92") of precipitation.Daylight
In Guaratinguetá, the average length of the day in September is 11h and 58min.On the first day of September in Guaratinguetá, sunrise is at 06:10 and sunset at 17:50. On the last day of the month, sunrise is at 05:41 and sunset at 17:59 -03.
Sunshine
With an average of 8.7h of sunshine, September has the most sunshine of the year.UV index
The months with the lowest UV index are February through December, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. To avoid the Sun's strongest rays, limit exposure around the mid-day period. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Guaratinguetá, Brazil
- Average high temperature in September: 25.5°C
The warmest month (with the highest average high temperature) is February (26.8°C).
The month with the lowest average high temperature is June (21.1°C).
- Average low temperature in September: 13.4°C
The month with the highest average low temperature is December (17.1°C).
The coldest month (with the lowest average low temperature) is July (10.8°C).
Average pressure in September
Guaratinguetá, Brazil
- Average pressure in September: 1017.6mbar
The month with the highest atmospheric pressure is July (1020.5mbar).
The month with the lowest atmospheric pressure is December (1012.3mbar).
Average wind speed in September
Guaratinguetá, Brazil
- Average wind speed in September: 6.7km/h
The windiest month (with the highest average wind speed) is September (6.7km/h).
The calmest months (with the lowest average wind speed) are February, March and April (5.3km/h).
Average humidity in September
Guaratinguetá, Brazil
- Average humidity in September: 75%
The months with the highest relative humidity are March and April (88%).
The month with the lowest relative humidity is September (75%).
Average rainfall in September
Guaratinguetá, Brazil
- Average rainfall in September: 35mm
The wettest month (with the highest rainfall) is January (131mm).
The driest month (with the least rainfall) is June (17mm).
Average rainfall days in September
Guaratinguetá, Brazil
- Average rainfall days in September: 13.9 days
The month with the highest number of rainy days is December (26.6 days).
The months with the least rainy days are July and August (9.3 days).
Average daylight in September /
Average sunshine in September
Guaratinguetá, 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: 8h and 42min
The month with the most sunshine is September (Average sunshine: 8h and 42min).
The months with the least sunshine are March and April (Average sunshine: 7h and 24min).
Average sunshine days in September
Guaratinguetá, Brazil
- Average sunshine days in September: 12.5 days
The month with the most sunshine days is August (19.4 days).
The month with the least sunshine days is December (3.4 days).
Average UV index in September
Guaratinguetá, Brazil
- Average UV index in September: 5
The month with the highest UV index is January (UV index 6).
The months with the lowest UV index are February, March, April, May, June, July, August, September, October, November and December (UV index 5).
Average cloud cover in September
Guaratinguetá, Brazil
- Average cloud cover in September: 35
The month with the most cloud cover is March (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Guaratinguetá, Brazil
- Average visibility in September: 8km
The months with the highest visibility are August, September and October (8km).
The months with the lowest visibility are January, March, April and May (6km).
