Temperatures in September
It's cool to moderate in September in Llandudno with an average temperature of 18°C. Temperatures this month range from a low of 16°C to a high of 20°C. At night, you can expect temperatures between 10°C and 13°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Llandudno 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 Llandudno with mild temperatures, averaging around 19°C during the day and nights close to 13°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry.
Mid-September
By mid-September, the average daytime temperature drops to around 18°C, with nights close to 12°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
End of September
By the end of September, the average daytime temperature in Llandudno will be around 17°C, with nights close to 11°C. There’s regular precipitation, but with a bit of luck, you’ll also get some dry and sunny days.
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Precipitation in September
In September, there is an average of 97 mm of precipitation, spread over 15 days. The wind speed is around 4 Bft, mostly coming from the Southwest.
The average precipitation chance is 49% per day this month. Though it seems average, the weather’s variable. Some days have a higher chance of precipitation.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in September for Llandudno. 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.
Llandudno in September |
London | ||
|---|---|---|---|
 Average Temperature |
18°C | 20°C | |
 High Temp |
20°C | 22°C | |
| Low Temp |
16°C | 17°C | |
 Total Precipitation |
97 mm | 44 mm | |
| Rainy Days |
15 days | 8 days | |
August
UV index
The UV index is a maximum of 6 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is September a good time to visit Llandudno?
Want nice weather? Then September is a great time to be in Llandudno. You’ll have pleasant temperatures and not too much rain this month.
Temperature records for Llandudno in September
With 28°C, Llandudno hit the highest temperature in the last 10 years in September 2021. The lowest daytime temperature in this month was 10°C in 2020. The extreme night temperatures ranged from a low of 2°C to a high of 18°C.
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Daily Temperature in September in Llandudno
This chart shows the average daily temperatures, both day and night, for each day in September in Llandudno, 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 Llandudno
The chart below shows the average daily precipitation in September for Llandudno, 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 15 days of rain in Llandudno.
Daily UV Index in September in Llandudno
This chart shows the average daily UV index in September in Llandudno, 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 Llandudno Over the Years
This chart shows the average temperature in September in Llandudno, measured in degrees Celsius, over the past years.
Total Precipitation in September in Llandudno Over the Years
This chart shows the average precipitation in September in Llandudno, 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 Llandudno
Click on a specific day in September for detailed info on the typical weather on that day in Llandudno. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Llandudno
Have you been to Llandudno in September?
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Average Weather in Llandudno by Month
Click on a month below to see detailed weather info for Llandudno. 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 Llandudno for all months at once
