September weather forecastAriana, Tunisia
September
Weather in September
September in Ariana signals the retreat of harsh summer conditions. The temperature range experiences a drop, varying between 22.4°C (72.3°F) and 28.6°C (83.5°F). The region begins to experience a gradual surge in rainfall, contrasting the arid conditions of the past few months. Autumn takes its initial steps in Ariana this month as daylight hours and cloud cover begin a gentle decline. On the whole, September in Ariana marks the beginning of a transition from summer to autumn.Temperature
September in Ariana signals a slight drop in average high-temperature, sliding from August's hot 32.4°C (90.3°F) to a warm 28.6°C (83.5°F). During September, Ariana experiences a consistent low-temperature average of 22.4°C (72.3°F).Heat index
Throughout September, the heat index is calculated to be a hot 31°C (87.8°F). If exposure and activity persist, fatigue could ensue, possibly leading to heat cramps.Given the heat index, its values are aligned with shaded sites and gentle winds. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', determines the feeling of heat when you account for the relative humidity. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
Humidity
In Ariana, the average relative humidity in September is 63%.Rainfall
In Ariana, Tunisia, in September, it is raining for 10.4 days, with typically 27mm (1.06") of accumulated precipitation. In Ariana, during the entire year, the rain falls for 120 days and collects up to 297mm (11.69") of precipitation.Daylight
In Ariana, the average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 05:50 and sunset at 18:47. On the last day of the month, sunrise is at 06:14 and sunset at 18:04 CET.
Sunshine
In September, the average sunshine is 10.5h.UV index
In Ariana, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 6 during September translates into the following directions:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ariana, Tunisia
- Average high temperature in September: 28.6°C
The warmest month (with the highest average high temperature) is August (32.4°C).
The month with the lowest average high temperature is January (14.8°C).
- Average low temperature in September: 22.4°C
The month with the highest average low temperature is August (24.6°C).
The coldest month (with the lowest average low temperature) is February (8.7°C).
Average pressure in September
Ariana, Tunisia
- Average pressure in September: 1016.2mbar
The month with the highest atmospheric pressure is December (1020.4mbar).
The month with the lowest atmospheric pressure is April (1014.7mbar).
Average wind speed in September
Ariana, Tunisia
- Average wind speed in September: 13.5km/h
The windiest month (with the highest average wind speed) is February (18.8km/h).
The calmest month (with the lowest average wind speed) is August (12.7km/h).
Average humidity in September
Ariana, Tunisia
- Average humidity in September: 63%
The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is July (53%).
Average rainfall in September
Ariana, Tunisia
- Average rainfall in September: 27mm
The wettest month (with the highest rainfall) is October (38mm).
The driest month (with the least rainfall) is July (5mm).
Average rainfall days in September
Ariana, Tunisia
- Average rainfall days in September: 10.4 days
The month with the highest number of rainy days is January (14.2 days).
The month with the least rainy days is July (2.6 days).
Average daylight in September /
Average sunshine in September
Ariana, Tunisia
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 10h and 30min
The month with the most sunshine is August (Average sunshine: 12h and 18min).
The month with the least sunshine is January (Average sunshine: 6h and 0min).
Average sunshine days in September
Ariana, Tunisia
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is July (26.8 days).
The month with the least sunshine days is February (12 days).
Average UV index in September
Ariana, Tunisia
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in September
Ariana, Tunisia
- Average cloud cover in September: 17
The month with the most cloud cover is January (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 6).
Average visibility in September
Ariana, Tunisia
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
