September weather forecast
Beirut, Lebanon

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The beautiful city of Beirut, Lebanon
The beautiful city of Beirut, Lebanon

Weather in September

As September rolls in, the scorching Beirut summer starts to wane and welcomes an early autumn. Despite a minor increase in rainfall to 2mm (0.08"), the month remains significantly dry compared to the upcoming months. This period marks the transition from the rainless summer to a winter that gradually ushers in showers. Despite this shift, the weather remains favorable for tourists, offering an appealing mix of moderate temperatures and dwindling rains. The gradually cooling temperatures make it an excellent time for sightseeing and outdoor pursuits.

Temperature

Beirut's entry into September measures an average high-temperature of a moderately hot 29.8°C (85.6°F), closely parallel to the preceding month. Beirut's nights in September cool down to an average low-temperature of 23.7°C (74.7°F).

Heat index

The average heat index in September is appraised at a tropical 34°C (93.2°F). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.
The metrics for the heat index are tailored for both shady environments and light winds. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values remain especially vital for babies and toddlers. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.

Humidity

In September, the average relative humidity is 69%.

Rainfall

In September, the rain falls for 1 days. Throughout September, 2mm (0.08") of precipitation is accumulated. In Beirut, during the entire year, the rain falls for 68 days and collects up to 826mm (32.52") of precipitation.

Sea temperature

In September, the average sea temperature is 28.2°C (82.8°F).
Note: Swimming, diving, and other water activities in temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are highly enjoyable and provide prolonged comfort without unease.

Daylight

In Beirut, the average length of the day in September is 12h and 23min.
On the first day of September in Beirut, sunrise is at 06:12 and sunset at 19:03. On the last day of the month, sunrise is at 06:32 and sunset at 18:23 EEST.

Sunshine

In September, the average sunshine in Beirut is 9.6h.

UV index

In September, the average daily maximum UV index in Beirut is 9. A UV Index estimate of 8 to 10 represents a very high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index, 9 in September, converts into the following recommendations:
It is essential to prioritize protection. Unprotected skin and eyes can suffer rapid harm. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Experience reduced UV exposure by about half when donning a wide-brim hat. Despite the overcast weather, sunscreen with SPF of at least 30 should be applied liberally and reapplied often, particularly after swimming or an outdoor workout. Stay vigilant! UV rays get a boost in intensity due to sand and water reflections.
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Frequently asked questions

Is it hot in Beirut during September?

The average high-temperature and low-temperature in Beirut, Lebanon, during September are 29.8°C (85.6°F) and 23.7°C (74.7°F) respectively. In September, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which represents the influence of relative humidity on air temperature, is appraised at 34°C (93.2°F).

What is the average humidity in September in Beirut?

The average relative humidity in September in Beirut, Lebanon, is 69%.

How much does it rain in Beirut in September?

In September, in Beirut, Lebanon, the rain falls for 1 days. Throughout September, 2mm (0.08") of precipitation is accumulated.

What is the sea water temperature in September in Beirut?

In September, the average sea temperature in Beirut is 28.2°C (82.8°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

How many hours of daylight does Beirut have in September?

The average day length in September is 12h and 23min.

When are sunrise and sunset in September in Beirut?

In September, on the first day of the month, sunrise is at 06:12 and sunset at 19:03. On the last day of the month, in Beirut, sunrise is at 06:32 and sunset at 18:23 EEST.

How long on average sun shines in September in Beirut?

In Beirut, Lebanon, the average sunshine duration in September is 9.6h.

What is the UV index intensity in September in Beirut?

In Beirut, the average daily maximum UV index in September is 9. A UV Index value of 8 to 10 symbolizes a very high health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in September
Beirut, Lebanon

Average temperature in September - Beirut, Lebanon
  • Average high temperature in September: 29.8°C

The warmest month (with the highest average high temperature) is August (30.7°C).
The month with the lowest average high temperature is January (17.4°C).

  • Average low temperature in September: 23.7°C

The month with the highest average low temperature is August (24.8°C).
The coldest month (with the lowest average low temperature) is February (11°C).

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Average humidity in September
Beirut, Lebanon

Average humidity in September - Beirut, Lebanon
  • Average humidity in September: 69%

The months with the highest relative humidity are July and August (73%).
The month with the lowest relative humidity is November (66%).

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Average rainfall in September
Beirut, Lebanon

Average rainfall in September - Beirut, Lebanon
  • Average rainfall in September: 2.3mm

The wettest month (with the highest rainfall) is January (190.9mm).
The driest month (with the least rainfall) is July (0.3mm).

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Average rainfall days in September
Beirut, Lebanon

Average rainfall days in September - Beirut, 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, July and August (0 days).

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Average sea temperature in September
Beirut, Lebanon

Average sea temperature in September - Beirut, Lebanon
  • Average sea temperature in September: 28.2°C

The best month for swimming (with the highest average sea temperature) is August (28.6°C).
The coldest month (with the lowest average sea temperature) is February (17.4°C).

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Average daylight in September /
Average sunshine in September
Beirut, Lebanon

Average daylight in September / Average sunshine in September - Beirut, Lebanon
  • Average daylight in September: 12h and 2min

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: 9h and 4min

The months with the most sunshine are June and July (Average sunshine: 11h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

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Average UV index in September
Beirut, Lebanon

Average UV index in September - Beirut, Lebanon
  • Average UV index in September: 9

The month with the highest UV index is July (UV index 12).
The months with the lowest UV index are January and December (UV index 3).

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Beirut, Lebanon

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