September weather forecastBotafogo, Brazil
September
Weather in September
The first month of the spring, September, is still a warm month in Botafogo, Brazil, with an average temperature ranging between min 19.4°C (66.9°F) and max 25°C (77°F).Temperature
Botafogo's September average high-temperature settles at a still warm 25°C (77°F), showing a near match with the preceding month. In the month of September, the average temperature dips to a refreshing 19.4°C (66.9°F) during the night.Humidity
The average relative humidity in September is 78%.Rainfall
In September, the rain falls for 13.7 days. Throughout September, 47mm (1.85") of precipitation is accumulated. In Botafogo, during the entire year, the rain falls for 192.5 days and collects up to 812mm (31.97") of precipitation.Daylight
The average length of the day in September is 11h and 58min.On the first day of the month, sunrise is at 06:02 and sunset at 17:42. On the last day of September, sunrise is at 05:33 and sunset at 17:51 -03.
Sunshine
The average sunshine in September is 7.9h.UV index
The month with the lowest UV index is September, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 5 during September leads to these instructions:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Botafogo, Brazil
- Average high temperature in September: 25°C
The warmest month (with the highest average high temperature) is February (29.7°C).
The month with the lowest average high temperature is July (24°C).
- Average low temperature in September: 19.4°C
The month with the highest average low temperature is January (23.7°C).
The coldest month (with the lowest average low temperature) is August (18.5°C).
Average pressure in September
Botafogo, Brazil
- Average pressure in September: 1017.8mbar
The month with the highest atmospheric pressure is July (1020.5mbar).
The month with the lowest atmospheric pressure is December (1011.9mbar).
Average wind speed in September
Botafogo, Brazil
- Average wind speed in September: 11.3km/h
The windiest months (with the highest average wind speed) are August and September (11.3km/h).
The calmest month (with the lowest average wind speed) is March (8.7km/h).
Average humidity in September
Botafogo, Brazil
- Average humidity in September: 78%
The month with the highest relative humidity is November (82%).
The month with the lowest relative humidity is August (76%).
Average rainfall in September
Botafogo, Brazil
- Average rainfall in September: 47mm
The wettest month (with the highest rainfall) is November (119mm).
The driest month (with the least rainfall) is June (29mm).
Average rainfall days in September
Botafogo, Brazil
- Average rainfall days in September: 13.7 days
The month with the highest number of rainy days is March (22.7 days).
The month with the least rainy days is July (9.3 days).
Average daylight in September /
Average sunshine in September
Botafogo, 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 42min).
- Average sunshine in September: 7h and 54min
The month with the most sunshine is February (Average sunshine: 8h and 48min).
The month with the least sunshine is October (Average sunshine: 7h and 30min).
Average sunshine days in September
Botafogo, Brazil
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is July (20.6 days).
The month with the least sunshine days is December (4.8 days).
Average UV index in September
Botafogo, Brazil
- Average UV index in September: 5
The month with the highest UV index is January (UV index 7).
The month with the lowest UV index is September (UV index 5).
Average cloud cover in September
Botafogo, Brazil
- Average cloud cover in September: 34
The month with the most cloud cover is November (Cloud cover 46).
The month with the least cloud cover is February (Cloud cover 28).
Average visibility in September
Botafogo, Brazil
- Average visibility in September: 10km
The months with the highest visibility are February, May, June, July, August and September (10km).
The months with the lowest visibility are January, March, April, October, November and December (9km).
