Temperatures in September
It's warm in September in Bayonne with an average temperature of 26°C. Temperatures this month range from a low of 21°C to a high of 31°C. At night, you can expect temperatures between 15°C and 22°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Bayonne 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 Bayonne with hot temperatures, averaging around 29°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 drops to around 27°C, with nights close to 19°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
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 Bayonne will be around 25°C, with nights close to 17°C. There’s regular precipitation, but with a bit of luck, you’ll also get some dry and sunny days.
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Water temperature
The water temperature at Bayonne is 24°C this month. Comfortable for a swim.
Precipitation in September
In September, there is an average of 96 mm of precipitation, spread over 8 days. The wind speed is around 4 Bft, mostly coming from the South.
The average precipitation chance is 25% per day this month. Though it seems pretty low, 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 Bayonne. 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.
Bayonne in September |
London | ||
|---|---|---|---|
 Average Temperature |
26°C | 20°C | |
 High Temp |
31°C | 22°C | |
| Low Temp |
21°C | 17°C | |
 Total Precipitation |
96 mm | 44 mm | |
| Rainy Days |
8 days | 8 days | |
August
UV index
The UV index is a maximum of 8 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 Bayonne?
Want nice weather? Then September is a great time to be in Bayonne. You’ll have pleasant temperatures and not too much rain this month.
Temperature records for Bayonne in September
With 37°C, Bayonne hit the highest temperature in the last 10 years in September 2015. The lowest daytime temperature in this month was 15°C in 2016. The extreme night temperatures ranged from a low of 8°C to a high of 27°C.
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Daily Temperature in September in Bayonne
This chart shows the average daily temperatures, both day and night, for each day in September in Bayonne, 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 Bayonne
The chart below shows the average daily precipitation in September for Bayonne, 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 8 days of rain in Bayonne.
Daily UV Index in September in Bayonne
This chart shows the average daily UV index in September in Bayonne, 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 Bayonne Over the Years
This chart shows the average temperature in September in Bayonne, measured in degrees Celsius, over the past years.
Total Precipitation in September in Bayonne Over the Years
This chart shows the average precipitation in September in Bayonne, 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 Bayonne
Click on a specific day in September for detailed info on the typical weather on that day in Bayonne. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Bayonne
Have you been to Bayonne in September?
Share your weather experience in September in Bayonne.
Average Weather in Bayonne by Month
Click on a month below to see detailed weather info for Bayonne. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
