September marks the transition from summer to fall in
Irbid. Daytime temperatures fall to a pleasant 29.8°C (85.6°F). However, the night temperatures remain relatively high. Rainfall increases slightly, from an average of 0mm (0") to 1mm (0.04"), still far from any significant precipitation. A noticeable decline in daylight hours signals the arrival of shorter days. While the UV Index also drops to 9 this month, it still requires residents to be cautious about sun exposure.
Temperature
The beginning of September in Irbid records an average high-temperature of a warm 29.8°C (85.6°F), marking a negligible difference from
August's 31.3°C (88.3°F). Throughout September, Irbid registers a consistent average low-temperature of 18.2°C (64.8°F).
Rainfall
January through
June, September through
December are months with rainfall. September is the first month it rains in Irbid. Throughout September, in the average 0.2 rainfall days, it receives 1mm (0.04") of precipitation. Throughout the year, in Irbid,
Jordan, there are 57.1 rainfall days, and 472mm (18.58") of precipitation is accumulated.
Daylight
In September, the average length of the day is 12h and 22min.
On the first day of the month, sunrise is at 06:11 and sunset at 19:01. On the last day of September, sunrise is at 06:30 and sunset at 18:22 +03.
Sunshine
The average sunshine in September in Irbid is 10h.
UV index
In September, the average daily maximum UV index is 9. A UV Index estimate of 8 to 10 represents a very high health risk from exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 9 in September interprets into the following advice:
Always take safety measures. The skin and eyes are at risk if left exposed. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Applying and reapplying liberally a broad-spectrum sunscreen of SPF 30+ every two hours, and straight after a swim or outdoor activity is recommended.