September weather forecastCaiana, Brazil
September
Weather in September
September, the first month of the spring in Caiana, is still a warm month, with an average temperature fluctuating between 24.8°C (76.6°F) and 14.3°C (57.7°F).Temperature
At the onset of September, Caiana records an average high-temperature of a still moderately hot 24.8°C (76.6°F), showing little deviation from the preceding month. In Caiana, September nights cool down to an average of 14.3°C (57.7°F).Humidity
With an average relative humidity of 77%, September is the least humid month.Rainfall
In Caiana, in September, it is raining for 13.2 days, with typically 43mm (1.69") of accumulated precipitation. Throughout the year, there are 218.5 rainfall days, and 869mm (34.21") of precipitation is accumulated.Daylight
The average length of the day in September is 11h and 59min.On the first day of the month, sunrise is at 05:55 and sunset at 17:39. On the last day of September, sunrise is at 05:29 and sunset at 17:45 -03.
Sunshine
The month with the most sunshine is September, with an average of 8.2h of sunshine.UV index
January through April, June through October and December, with an average maximum UV index of 5, are months with the highest UV index in Caiana. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In September, the UV index of 5 transforms into the following advice:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Caiana, Brazil
- Average high temperature in September: 24.8°C
The warmest month (with the highest average high temperature) is February (25.8°C).
The month with the lowest average high temperature is June (21.6°C).
- Average low temperature in September: 14.3°C
The month with the highest average low temperature is January (17.7°C).
The coldest month (with the lowest average low temperature) is July (12.3°C).
Average pressure in September
Caiana, Brazil
- Average pressure in September: 1018.5mbar
The month with the highest atmospheric pressure is July (1021.1mbar).
The month with the lowest atmospheric pressure is December (1012.8mbar).
Average wind speed in September
Caiana, Brazil
- Average wind speed in September: 7.8km/h
The windiest month (with the highest average wind speed) is October (8km/h).
The calmest months (with the lowest average wind speed) are April and May (5.5km/h).
Average humidity in September
Caiana, Brazil
- Average humidity in September: 77%
The months with the highest relative humidity are March, April and December (90%).
The month with the lowest relative humidity is September (77%).
Average rainfall in September
Caiana, Brazil
- Average rainfall in September: 43mm
The wettest month (with the highest rainfall) is December (140mm).
The driest month (with the least rainfall) is July (15mm).
Average rainfall days in September
Caiana, Brazil
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is March (25 days).
The month with the least rainy days is August (10.3 days).
Average daylight in September /
Average sunshine in September
Caiana, Brazil
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 13h and 24min).
The month with the shortest days is June (Average daylight: 10h and 54min).
- Average sunshine in September: 8h and 12min
The month with the most sunshine is September (Average sunshine: 8h and 12min).
The month with the least sunshine is November (Average sunshine: 6h and 6min).
Average sunshine days in September
Caiana, Brazil
- Average sunshine days in September: 12.5 days
The month with the most sunshine days is August (16.8 days).
The month with the least sunshine days is December (4.4 days).
Average UV index in September
Caiana, Brazil
- Average UV index in September: 5
The months with the highest UV index are January, February, March, April, June, July, August, September, October and December (UV index 5).
The months with the lowest UV index are May and November (UV index 4).
Average cloud cover in September
Caiana, Brazil
- Average cloud cover in September: 44
The months with the most cloud cover are November and December (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 42).
Average visibility in September
Caiana, 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, February, March, April, May, June and December (6km).
