September marks the gradual end of summer in the UAE. According to the National Center of Meteorology (NCM), the autumnal equinox occurs on September 23, when the sun is directly over the equator before starting its southward movement towards the Tropic of Capricorn. This marks the beginning of cooler temperatures.
During September, temperatures remain high, with daytime averages between 38.5°C and 40.6°C. However, nighttime temperatures begin to cool slightly, ranging from 26.8°C to 29.3°C.
As per the NCM, the influence of the Indian monsoon decreases in September, giving way to desert thermal lows over the Arabian Peninsula. These thermal lows can lead to dust storms, sometimes reducing visibility. While most of the UAE experiences drier conditions, occasional showers can still occur in the eastern regions, with cumulonimbus clouds bringing rain and thunderstorms that may extend inland.
Wind patterns also shift during September. Southeasterly winds prevail during the late night and early morning, while north-westerly winds take over in the afternoons and evenings due to the sea breeze and land breeze effects.
Humidity levels increase slightly compared to August, especially in the latter half of September. The average humidity is around 49%, raising the likelihood of fog and mist formation across the country.
Here is a prediction of the climate in Numbers:
- Mean air temperature: 32.3°C to 34.2°C
- Mean maximum air temperature: 38.5°C to 40.6°C
- Mean minimum air temperature: 26.8°C to 29.3°C
- Mean wind speed: 11 km/h
As the month progresses, residents can look forward to gradually cooler autumn temperatures, making outdoor activities more comfortable. However, it is advisable to be prepared for occasional dust storms and fluctuating wind patterns.
