September weather forecast
Sde Boker, Israel

September sees a retreat from the harsh summer heat in Sde Boker, as temperatures start to drop. A decrease in temperature to up to 30.9°C (87.6°F) is noticed, giving residents their much-awaited relief from summer. The daylight hours reduce gradually, hinting at the forthcoming autumn season. Moving into October, a further decrease in temperature is anticipated.

Temperature

September in Sde Boker denotes a minimal variation in the average high-temperature to a still hot 30.9°C (87.6°F) from August's 33.3°C (91.9°F). An average temperature of 21.4°C (70.5°F) marks the nights in September.

Heat index

The average heat index in September is estimated at a sweltering 35°C (95°F). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly critical to babies and toddlers. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

The most humid month is September, with an average relative humidity of 61%.

Rainfall

January through June, September through December are months with rainfall. September is the first month it rains. Throughout September, in the average 2.1 rainfall days, it receives 1mm (0.04") of precipitation. In Sde Boker, Israel, during the entire year, the rain falls for 63.2 days and collects up to 132mm (5.2") of precipitation.

Daylight

In Sde Boker, the average length of the day in September is 12h and 21min.
On the first day of September, sunrise is at 06:17 and sunset at 19:04. On the last day of the month, sunrise is at 06:34 and sunset at 18:27 IDT.

Sunshine

The average sunshine in September is 10.1h.

UV index

In September, the average daily maximum UV index in Sde Boker, Israel, is 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum UV index, 6 during September, leads to the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.