Normal weather for Plymouth in September
It's warm in September in Plymouth with an average temperature of 26°C. Temperatures this month range from a low of 22°C to a high of 31°C. At night, you can expect temperatures between 6°C and 12°C.
In September, there is an average of 70 mm of precipitation, spread over 10 days. The wind speed is around 3 Bft, mostly coming from the Southwest.
Plymouth in September |
London | ||
|---|---|---|---|
 Average Temperature |
26°C | 20°C | |
 High Temp |
31°C | 22°C | |
| Low Temp |
22°C | 17°C | |
 Total Precipitation |
70 mm | 44 mm | |
| Rainy Days |
10 days | 8 days | |
Start of September
The month of September starts in Plymouth with hot temperatures, averaging around 29°C during the day and nights close to 10°C. There’s little chance of precipitation. The weather is mostly sunny and dry.
Since temperatures can differ between day and night, it’s a good idea to dress in layers. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal for the day. In the evening and morning, we recommend a light coat, jumper or cardigan, and long trousers.
Mid-September
By mid-September, the average daytime temperature drops to around 27°C, with nights close to 9°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. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal for the day. In the evening and morning, we recommend a light coat, jumper or cardigan, and long trousers.
End of September
By the end of September, the average daytime temperature in Plymouth will be around 24°C, with nights close to 8°C. There’s regular precipitation, but with a bit of luck, you’ll also get some dry and sunny days.
As it gets cooler in the evening, it’s best to wear layers. A T-shirt, light trousers or skirt, and a light jacket are perfect for daytime. In the evening and morning, we recommend a warm coat, jumper or cardigan, and long trousers.
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UV index
The UV index is a maximum of 7 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 Plymouth?
Want nice weather? Then September is a great time to be in Plymouth. You’ll have pleasant temperatures and not too much rain this month.
Temperature records for Plymouth in September
With 38°C, Plymouth hit the highest temperature in the last 10 years in September 2022. The lowest daytime temperature in this month was 7°C in 2019. The extreme night temperatures ranged from a low of -1°C to a high of 20°C.
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Daily Temperature in September in Plymouth
This chart shows the average daily temperatures, both day and night, for each day in September in Plymouth, 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 Plymouth
The chart below shows the average daily precipitation in September for Plymouth, 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 10 days of rain in Plymouth.
Daily UV Index in September in Plymouth
This chart shows the average daily UV index in September in Plymouth, 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 Plymouth Over the Years
This chart shows the average temperature in September in Plymouth, measured in degrees Celsius, over the past years.
Total Precipitation in September in Plymouth Over the Years
This chart shows the average precipitation in September in Plymouth, 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 Plymouth
Click on a specific day in September for detailed info on the typical weather on that day in Plymouth. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Plymouth
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Average Weather in Plymouth by Month
Click on a month below to see detailed weather info for Plymouth. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
