Temperatures in September
It's warm in September in Grand Bel Air with an average temperature of 26°C. Temperatures this month range from a low of 25°C to a high of 27°C. At night, you can expect temperatures between 19°C and 21°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Grand Bel Air in September. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of September
The month of September starts in Grand Bel Air with warm temperatures, averaging around 26°C during the day and nights close to 21°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry.
Since temperatures can differ between day and night, it’s a good idea to dress in layers.
Mid-September
By mid-September, the average daytime temperature stays the same at 26°C, with nights close to 20°C. Not much precipitation expected during this period. It’s mostly dry with sunshine.
Temperatures vary between day and night, so it’s smart to wear layers.
End of September
By the end of September, the average daytime temperature in Grand Bel Air will be around 27°C, with nights close to 21°C. A shower might show up, but overall the weather will be dry and sunny.
As it gets cooler in the evening, it’s best to wear layers.
Precipitation in September
In September, there is an average of 50 mm of precipitation, spread over 11 days. The wind speed is around 4 Bft, mostly coming from the Southeast.
The average precipitation chance is 37% per day this month. The weather’s variable. Some days have higher and others lower precipitation chances, which lowers the average.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in September for Grand Bel Air. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Grand Bel Air in September |
London | ||
|---|---|---|---|
 Average Temperature |
26°C | 20°C | |
 High Temp |
27°C | 22°C | |
| Low Temp |
25°C | 17°C | |
 Total Precipitation |
50 mm | 44 mm | |
| Rainy Days |
11 days | 8 days | |
August
UV index
The UV index is a maximum of 10 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is September a good time to visit Grand Bel Air?
Want nice weather? Then September is a great time to be in Grand Bel Air. You’ll have pleasant temperatures and not too much rain this month.
Temperature records for Grand Bel Air in September
With 29°C, Grand Bel Air hit the highest temperature in the last 10 years in September 2015. The lowest daytime temperature in this month was 22°C in 2018. The extreme night temperatures ranged from a low of 14°C to a high of 23°C.
Check out the climate of Grand Bel Air for all months and discover the best travel time
Daily Temperature in September in Grand Bel Air
This chart shows the average daily temperatures, both day and night, for each day in September in Grand Bel Air, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in September in Grand Bel Air
The chart below shows the average daily precipitation in September for Grand Bel Air, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for September, you can expect around 11 days of rain in Grand Bel Air.
Daily UV Index in September in Grand Bel Air
This chart shows the average daily UV index in September in Grand Bel Air, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Grand Bel Air Over the Years
This chart shows the average temperature in September in Grand Bel Air, measured in degrees Celsius, over the past years.
Total Precipitation in September in Grand Bel Air Over the Years
This chart shows the average precipitation in September in Grand Bel Air, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in September for Grand Bel Air
Click on a specific day in September for detailed info on the typical weather on that day in Grand Bel Air. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Grand Bel Air
Have you been to Grand Bel Air in September?
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Average Weather in Grand Bel Air by Month
Click on a month below to see detailed weather info for Grand Bel Air. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Grand Bel Air for all months at once
