September weather forecast
Thuwal, Saudi Arabia

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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.
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Frequently asked questions

How hot does it get in Thuwal in September?

The average high-temperature, in September, in Thuwal, is 35.8°C (96.4°F), while the average low-temperature is 29°C (84.2°F). The average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, in September is computed to be 46°C (114.8°F).

What is the average humidity in September in Thuwal?

The average relative humidity in September in Thuwal is 58%.

What is the driest month in Thuwal?

In Thuwal, rain does not fall in June and September.

Does it rain in Thuwal in September?

In September, in Thuwal, Saudi Arabia, it doesn't rain. August is the latest month when it rains.

How many hours of daylight does Thuwal have in September?

In September, the average day length is 12h and 16min.

When is the sunrise / sunset in September in Thuwal?

On the first day of September in Thuwal, Saudi Arabia, sunrise is at 06:06 and sunset at 18:40. On the last day of the month, sunrise is at 06:14 and sunset at 18:12 +03.

How long on average sun shines in September in Thuwal?

In Thuwal, Saudi Arabia, the average sunshine duration in September is 9.9h.

What is the month with the highest UV index in Thuwal?

April through September, with an average maximum UV index of 8, are months with the highest UV index in Thuwal.

What is the UV index intensity in September in Thuwal?

In Thuwal, Saudi Arabia, the average daily maximum UV index in September is 8. A UV Index value of 8 to 10 symbolizes a very high hazard to health from exposure to the Sun's UV radiation.

Average temperature in September
Thuwal, Saudi Arabia

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).

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Average pressure in September
Thuwal, Saudi Arabia

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).

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Average wind speed in September
Thuwal, Saudi Arabia

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).

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Average humidity in September
Thuwal, Saudi Arabia

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%).

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Average rainfall in September
Thuwal, Saudi Arabia

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).

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Average rainfall days in September
Thuwal, Saudi Arabia

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).

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Average daylight in September /
Average sunshine in September
Thuwal, Saudi Arabia

Average daylight in September / Average sunshine in September - Thuwal, Saudi Arabia
  • Average daylight in September: 12h and 2min

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 5min

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).

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Average sunshine days in September
Thuwal, Saudi Arabia

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).

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Average UV index in September
Thuwal, Saudi Arabia

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).

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Average cloud cover in September
Thuwal, Saudi Arabia

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).

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Average visibility in September
Thuwal, Saudi Arabia

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).

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Thuwal, Saudi Arabia

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