September weather forecastThuwal, Saudi Arabia
September
Weather in September
Shifting into September, Thuwal experiences a slight ease in temperature from the preceding months. The shift from the city's harsh summer to its relatively mild winters commences. The long sunlight hours persist while the strength of the UV rays start to wane. With rainfall still absent, the arid desert landscape continues to dominate. An observable reduction in wind speed adds to the calmness in the atmosphere of the city during this month.Temperature
With the advent of September, Thuwal's high-temperatures adjust to a still very hot 35.8°C (96.4°F), closely aligning with the preceding month. An average nighttime temperature of 29°C (84.2°F) is observed during September.Heat index
The heat index value for September is computed to be a life-threatening hot 46°C (114.8°F). Stay wary: Heat exhaustion and heat cramps are possible. Heatstroke can ensue from extended effort.It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', joins air temperature with relative humidity to produce a temperature perception for humans. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.
Humidity
In September, the average relative humidity in Thuwal, Saudi Arabia, is 58%.Rainfall
June and September are months without rainfall.Daylight
In Thuwal, the average length of the day in September is 12h and 16min.On the first day of the month, sunrise is at 06:06 and sunset at 18:40. On the last day of September, sunrise is at 06:14 and sunset at 18:12 +03.
Sunshine
In September, the average sunshine in Thuwal is 9.9h.UV index
The months with the highest UV index in Thuwal are April through September, with an average maximum UV index of 8. A UV Index reading of 8 to 10 represents a very high threat to health from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 8 during September leads to these advisories:
Prioritize protection; rapid damage can occur to unprotected eyes and skin. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Thuwal, Saudi Arabia
- Average high temperature in September: 35.8°C
The warmest months (with the highest average high temperature) are July and August (36.6°C).
The month with the lowest average high temperature is January (26.9°C).
- Average low temperature in September: 29°C
The month with the highest average low temperature is August (30.3°C).
The coldest month (with the lowest average low temperature) is January (22.4°C).
Average pressure in September
Thuwal, Saudi Arabia
- Average pressure in September: 1006.1mbar
The month with the highest atmospheric pressure is January (1014.8mbar).
The month with the lowest atmospheric pressure is July (1003.5mbar).
Average wind speed in September
Thuwal, Saudi Arabia
- Average wind speed in September: 16.1km/h
The windiest month (with the highest average wind speed) is June (18.9km/h).
The calmest month (with the lowest average wind speed) is October (12.8km/h).
Average humidity in September
Thuwal, Saudi Arabia
- Average humidity in September: 58%
The month with the highest relative humidity is October (59%).
The month with the lowest relative humidity is June (47%).
Average rainfall in September
Thuwal, Saudi Arabia
- Average rainfall in September: 0mm
The wettest month (with the highest rainfall) is November (21mm).
The driest months (with the least rainfall) are June and September (0mm).
Average rainfall days in September
Thuwal, Saudi Arabia
- Average rainfall days in September: 0.4 days
The month with the highest number of rainy days is November (6.5 days).
The month with the least rainy days is June (0.3 days).
Average daylight in September /
Average sunshine in September
Thuwal, Saudi Arabia
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 13h and 30min).
The month with the shortest days is December (Average daylight: 10h and 48min).
- Average sunshine in September: 9h and 54min
The months with the most sunshine are May, June and July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 18min).
Average sunshine days in September
Thuwal, Saudi Arabia
- Average sunshine days in September: 29.4 days
The month with the most sunshine days is July (30.3 days).
The month with the least sunshine days is November (21.5 days).
Average UV index in September
Thuwal, Saudi Arabia
- Average UV index in September: 8
The months with the highest UV index are April, May, June, July, August and September (UV index 8).
The months with the lowest UV index are January and December (UV index 6).
Average cloud cover in September
Thuwal, Saudi Arabia
- Average cloud cover in September: 9
The months with the most cloud cover are January and August (Cloud cover 16).
The month with the least cloud cover is October (Cloud cover 3).
Average visibility in September
Thuwal, Saudi Arabia
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
