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 sea temperature 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
Weather in September
Temperature
September's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from August's tropical 32.4°C (90.3°F) to a moderately hot 28.6°C (83.5°F). In Gammarth, the average low-temperature during the month of September is an agreeable 22.4°C (72.3°F).Heat index
In September, the heat index is computed to be a hot 31°C (87.8°F). Exposure and extended activity could potentially cause a state of fatigue and lead to heat cramps.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', reflects the blend of air temperature and relative humidity to give a temperature impression. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Humidity
The average relative humidity in September is 63%.Rainfall
In September, the rain falls for 10.4 days. Throughout September, 27mm (1.06") of precipitation is accumulated. In Gammarth, during the entire year, the rain falls for 120 days and collects up to 297mm (11.69") of precipitation.Sea temperature
In Gammarth, in September, the average water temperature is 25°C (77°F).Note: Swimming, diving, and other water activities in the temperature range of 25°C (77°F) to 29°C (84.2°F) are perceived as very enjoyable and comfortable for prolonged durations.
Daylight
In Gammarth, 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 06:13 and sunset at 18:03 CET.
Sunshine
The average sunshine in September in Gammarth is 10.5h.UV index
In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: An average maximum UV index of 6 in September leads to these recommendations:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Attention! UV strength is notably upped by the reflection of sand and water.
Frequently asked questions
Is it hot in Gammarth during September?
What is the average humidity in September in Gammarth?
How many days does it rain in September in Gammarth?
What is the water temperature in September in Gammarth?
What is the average length of the day in September in Gammarth?
When are sunrise and sunset in September in Gammarth?
How long on average sun shines in September in Gammarth?
How high is the UV index in September in Gammarth?
Average temperature in September
Gammarth, 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
Gammarth, 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
Gammarth, 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
Gammarth, 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
Gammarth, 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
Gammarth, 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 sea temperature in September
Gammarth, Tunisia
- Average sea temperature in September: 25°C
The best month for swimming (with the highest average sea temperature) is August (26°C).
The coldest months (with the lowest average sea temperature) are January, February, March and April (15°C).
Average daylight in September /
Average sunshine in September
Gammarth, Tunisia
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 10h and 3min
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
Gammarth, 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
Gammarth, 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
Gammarth, 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
Gammarth, 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).
Gammarth, Tunisia
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