September weather forecastTripoli, Lebanon

September
Weather in September
September, though still hot, witnesses a marginal decrease in temperature to 30°C (86°F). Tripoli returns to a pattern of minimal rainfall, signaling the onset of the cooler months to come. Less humidity, coupled with pleasantly warm conditions, makes life outdoors more enjoyable. With the sea still warm, water-related activities continue to be popular among enthusiasts. A generous dose of sunshine marks the end of the summer season and the ushering in of autumn.Temperature
During August and September, Tripoli experiences its peak temperatures, averaging a high-temperature of 30°C (86°F).Heat index
September's average heat index is computed to be a torrid 35°C (95°F). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', binds temperature metrics with humidity values to give a sense of the actual warmth. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.
Humidity
In Tripoli, Lebanon, the average relative humidity in September is 69%.Rainfall
Months with rainfall in Tripoli are January through June, September through December. September is the first month it rains in Tripoli. Throughout September, in the average 1 rainfall days, it receives 12mm (0.47") of precipitation. Throughout the year, in Tripoli, there are 82 rainfall days, and 745mm (29.33") of precipitation is accumulated.Sea temperature
In Tripoli, the average seawater temperature in September is 28°C (82.4°F).Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is perceived as agreeably warm, making all water activities enjoyable without the risk of discomfort over lengthy durations.
Daylight
In September, the average length of the day in Tripoli is 12h and 23min.On the first day of September in Tripoli, sunrise is at 06:10 and sunset at 19:02. On the last day of the month, sunrise is at 06:30 and sunset at 18:22 EEST.
Sunshine
In September, the average sunshine in Tripoli is 10h.UV index
In September, the average daily maximum UV index in Tripoli is 8. A UV Index reading of 8 to 10 represents a very high health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum high daily UV index of 8 during September translates into the following directions:
Take important precautions because unprotected skin can burn and be harmed swiftly. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Note! The Sun's UV radiation gets intensified with the reflection from sand and water.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Tripoli, Lebanon
- Average high temperature in September: 30°C
The warmest months (with the highest average high temperature) are August and September (30°C).
The months with the lowest average high temperature are January and February (17°C).
- Average low temperature in September: 22°C
The month with the highest average low temperature is August (23°C).
The coldest months (with the lowest average low temperature) are January and February (10°C).
Average humidity in September
Tripoli, Lebanon
- Average humidity in September: 69%
The month with the highest relative humidity is May (76%).
The month with the lowest relative humidity is November (66%).
Average rainfall in September
Tripoli, Lebanon
- Average rainfall in September: 12mm
The wettest month (with the highest rainfall) is January (190mm).
The driest months (with the least rainfall) are July and August (0mm).
Average rainfall days in September
Tripoli, Lebanon
- Average rainfall days in September: 1 days
The month with the highest number of rainy days is January (15 days).
The months with the least rainy days are June and September (1 days).
Average sea temperature in September
Tripoli, Lebanon
- Average sea temperature in September: 28°C
The best month for swimming (with the highest average sea temperature) is August (28.5°C).
The coldest month (with the lowest average sea temperature) is February (17.5°C).
Average daylight in September /
Average sunshine in September
Tripoli, Lebanon
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 10h
The months with the most sunshine are June and July (Average sunshine: 12h).
The months with the least sunshine are January and December (Average sunshine: 5h).
Average UV index in September
Tripoli, Lebanon
- Average UV index in September: 8
The months with the highest UV index are June and July (UV index 11).
The months with the lowest UV index are January and December (UV index 3).





