Temperatures in September
It's hot in September in Grand-Case with an average temperature of 32°C. Temperatures this month range from a low of 31°C to a high of 34°C. At night, you can expect temperatures between 27°C and 28°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Grand-Case 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-Case with hot temperatures, averaging around 33°C during the day and nights close to 28°C. You can expect regular precipitation, but there’s also a chance for some sunny days in the first days of the month. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
Mid-September
By mid-September, the average daytime temperature drops to around 32°C, with nights close to 28°C. During this part of the month, you can expect regular precipitation, but there’ll also be some sunny days. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
End of September
By the end of September, the average daytime temperature in Grand-Case will be around 32°C, with nights close to 28°C. A shower might show up, but overall the weather will be dry and sunny. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
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Precipitation in September
In September, there is an average of 150 mm of precipitation, spread over 11 days. The wind speed is around 4 Bft, mostly coming from the East.
The average precipitation chance is 36% per day this month.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in September for Grand-Case. 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-Case in September |
London | ||
|---|---|---|---|
 Average Temperature |
32°C | 20°C | |
 High Temp |
34°C | 22°C | |
| Low Temp |
31°C | 17°C | |
 Total Precipitation |
150 mm | 44 mm | |
| Rainy Days |
11 days | 8 days | |
August
UV index
The UV index is a maximum of 9 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-Case?
After some sun? Then September isn’t the best time to be in Grand-Case. The temperature is pleasant, but there’s too much chance of rain this month.
Temperature records for Grand-Case in September
With 46°C, Grand-Case hit the highest temperature in the last 10 years in September 2016. The lowest daytime temperature in this month was 27°C in 2017. The extreme night temperatures ranged from a low of 22°C to a high of 29°C.
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Daily Temperature in September in Grand-Case
This chart shows the average daily temperatures, both day and night, for each day in September in Grand-Case, 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-Case
The chart below shows the average daily precipitation in September for Grand-Case, 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-Case.
Daily UV Index in September in Grand-Case
This chart shows the average daily UV index in September in Grand-Case, 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-Case Over the Years
This chart shows the average temperature in September in Grand-Case, measured in degrees Celsius, over the past years.
Total Precipitation in September in Grand-Case Over the Years
This chart shows the average precipitation in September in Grand-Case, 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-Case
Click on a specific day in September for detailed info on the typical weather on that day in Grand-Case. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Grand-Case
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Average Weather in Grand-Case by Month
Click on a month below to see detailed weather info for Grand-Case. 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-Case for all months at once
