Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
The arrival of September signals a slight increase in the average high-temperature, moving from a warm 25.1°C (77.2°F) in August to a still moderately hot 28.2°C (82.8°F). Despite a noticeable differential from daytime highs, Ianakafy notes an average nighttime low-temperature of 14.6°C (58.3°F) in September.Heat index
For September, the heat index is computed to be 29°C (84.2°F). Prolonged exposure and physical activity might induce exhaustion, potentially causing heat cramps.Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', gives a temperature feeling by integrating air temperature and humidity. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
Humidity
The months with the lowest humidity are September and October, with an average relative humidity of 51%.Rainfall
In Ianakafy, Madagascar, in September, during 2.8 rainfall days, 6mm (0.24") of precipitation is typically accumulated. In Ianakafy, during the entire year, the rain falls for 142.5 days and collects up to 647mm (25.47") of precipitation.Daylight
The average length of the day in September in Ianakafy is 11h and 58min.On the first day of the month, sunrise is at 06:08 and sunset at 17:47. On the last day of September, sunrise is at 05:39 and sunset at 17:57 EAT.
Sunshine
The average sunshine in September is 9.1h.UV index
The months with the highest UV index are January through March, September through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the maximum UV index of 6 transforms into these recommendations:
Deflect overexposure. Sun protection is a necessity. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the least humid month?
What is the average humidity in September?
How many days does it rain in September?
How many hours of daylight does Ianakafy have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the month with the highest UV index?
How high is the UV index in September?
Average temperature in September
Ianakafy, Madagascar
- Average high temperature in September: 28.2°C
The warmest month (with the highest average high temperature) is November (30.5°C).
The month with the lowest average high temperature is July (22.6°C).
- Average low temperature in September: 14.6°C
The month with the highest average low temperature is December (19.7°C).
The coldest month (with the lowest average low temperature) is July (11.4°C).
Average pressure in September
Ianakafy, Madagascar
- 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 January (1010.8mbar).
Average wind speed in September
Ianakafy, Madagascar
- Average wind speed in September: 13km/h
The windiest month (with the highest average wind speed) is July (13.2km/h).
The calmest month (with the lowest average wind speed) is December (10.8km/h).
Average humidity in September
Ianakafy, Madagascar
- Average humidity in September: 51%
The month with the highest relative humidity is March (79%).
The months with the lowest relative humidity are September and October (51%).
Average rainfall in September
Ianakafy, Madagascar
- Average rainfall in September: 6mm
The wettest month (with the highest rainfall) is January (192mm).
The driest months (with the least rainfall) are July and August (2mm).
Average rainfall days in September
Ianakafy, Madagascar
- Average rainfall days in September: 2.8 days
The month with the highest number of rainy days is January (24.9 days).
The months with the least rainy days are July and August (2.4 days).
Average daylight in September /
Average sunshine in September
Ianakafy, Madagascar
- 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: 9h and 1min
The month with the most sunshine is November (Average sunshine: 11h and 42min).
The month with the least sunshine is April (Average sunshine: 7h and 18min).
Average sunshine days in September
Ianakafy, Madagascar
- Average sunshine days in September: 26.7 days
The month with the most sunshine days is July (27.9 days).
The month with the least sunshine days is January (5.5 days).
Average UV index in September
Ianakafy, Madagascar
- Average UV index in September: 6
The months with the highest UV index are January, February, March, September, October, November and December (UV index 6).
The months with the lowest UV index are April, May, June, July and August (UV index 5).
Average cloud cover in September
Ianakafy, Madagascar
- Average cloud cover in September: 10
The month with the most cloud cover is January (Cloud cover 43).
The month with the least cloud cover is September (Cloud cover 10).
Average visibility in September
Ianakafy, Madagascar
- Average visibility in September: 10km
The months with the highest visibility are June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April and May (9km).
