Harrow weather in September (Greater London, United Kingdom)

Will it be rainy or sunny in Harrow this September? See what weather conditions to anticipate this month with our guide.

Temperatures

Expect perfect weather in Harrow during September, which means pleasant temperatures and moderate rainfall. Throughout the daytime, temperatures often hover around 20°C. However, as the sun sets and evening approaches, there's a noticeable cool-down. Temperatures gently drop to a more temperate 11°C.

Precipitation

Harrow in September usually receives moderate rainfall, averaging around 55 mm for the month. Historically, the month has about 12 days of rain.

Average sunshine

The area enjoys a moderate level of sunlight, with around 155 hours. It's a good balance between sunny and cloudy days.

If you favor pleasant temperatures and minimal rainfall, September is one of the better months to visit Harrow. June, July, August and September typically offer the most agreeable circumstances. On the other hand, January, February and December tend to be characterized by conditions that may not be as optimal.

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

 

Harrow, monthly averages in September

Min Temperature 11°C  

Max Temperature 20°C  

Chance of Rain 40%  

Precipitation 55 mm  

Rainy days 12 days  

Humidity 73% *  

Windspeed 11 km/h *  

Sunshine 155 hours *  

Percentage Sunshine 40% *  

* Data from: London, the United Kingdom (13 KM, 8 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 Harrow, 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

10/10

Walking

10/10

Barbeque

7/10

Camping

8/10

Outdoor sports

10/10

Interested in more climate information?

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

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.