Altarnun weather in September (Cornwall, United Kingdom)

How does the September weather in Altarnun compare to other months? Our page offers a comprehensive look at the weather you can expect this month.

Temperatures

In September, the weather in Altarnun generally includes pleasant temperatures and moderate rainfall. September is part of the summer season. Anticipate daytime highs near 19°C, and cooler nights with temperatures around 11°C.

Precipitation

Altarnun in September usually receives moderate rainfall, averaging around 74 mm for the month. With virtually no rain, this driest month of the year is perfect for exploring the outdoors. Expect around 16 days of rain based on historical data.

Average sunshine

Expect a moderate amount of sunlight, with approximately 162 hours. This means a pleasant mix of sun and clouds.

If you prefer dry days with pleasant temperatures, July and August typically offer the best circumstances. While January, February, November and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Altarnun climate page with graphs.

 

Altarnun, monthly averages in September

Min Temperature 11°C  

Max Temperature 19°C  

Chance of Rain 53%  

Precipitation 74 mm  

Rainy days 16 days  

Humidity 83% *  

Sunshine 162 hours *  

Percentage Sunshine *  

Data from: Plymouth, the United Kingdom (36 KM, 22 Miles).

Where to go in the United Kingdom in September

Find out more about the weather in the United Kingdom and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

For visitors traveling to Altarnun, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

6/10

Cycling

9/10

Walking

9/10

Camping

8/10

Outdoor sports

9/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Altarnun.

Our site offers climate and forecast data for every country in the world. Are you going to the United Kingdom? On this website you can find historical weather averages for many cities in the United Kingdom. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.