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Weather in United Kingdom in September – is it worth traveling to?

Is the weather pleasant in United Kingdom? See historical weather data for September to see if it meets your needs.
Check flight prices to United Kingdom on Avionero:
September

Is the weather good in United Kingdom in September 2024?

OK Weather
Mild
☁️
Cloudy

For the past few decades, the average daily temperatures in United Kingdom during September have been around +17°C.

In United Kingdom the temperature rarely varies more than seven degrees between the different parts with the highest temperature +17°C in Southend to +13°C in Shetland Islands. So you should be able to pack for similar conditions wherever you go in the country.

Temperature, wind and humidity in September

Average
Aberdeen
Belfast
Birmingham
Bristol
Cardiff
Edinburgh
Glasgow
Inverness
Liverpool
Manchester
Newcastle
Newquay
Shetland Islands
Southend
☀️
+17°C
Avg. max. temperature
-2°C
Min.
+32°C
Max.
68 mm
Total precipitation
79%
Avg. humidity
3 m/s
Avg. wind
4 ☀️
Sunny Days
18 ⛅️
Cloudy
8 🌦
Rainy
Our opinion: United Kingdom has OK weather in September.
United Kingdom in September – what city is the…
  • rainiest? Glasgow, with an average of 3 mm of rain and humidity of 81%;
  • warmest? Southend, with daytime temperatures averaging +19°C;
  • windiest? Shetland Islands, with an average of 6 m/s;
  • coolest? Shetland Islands, with daytime temperatures averaging +13°C;

How good is the weather in United Kingdom in September?

During September, the United Kingdom is characterized by variable weather with air pressure around 1012 HPa and therefore elements of sun, rain, and wind – with a little extra emphasis on the latter two. The humidity in September ranges between 76% in Southend and 83% in Shetland Islands.

How warm is it in United Kingdom during September?

Variable weather with sun, rain and wind: +17°C in average daily temperature.

This is how hot it usually is in September

The average daily temperatures above don't tell you everything about how hot it can be in United Kingdom. For example, cold nights can make a big difference for those staying in tents or unheated houses. Extra hot days, on the other hand, can make a big difference for those who plan to engage in demanding physical training or competition. So here are some more temperatures for September:
Average
Aberdeen
Belfast
Birmingham
Bristol
Cardiff
Edinburgh
Glasgow
Inverness
Liverpool
Manchester
Newcastle
Newquay
Shetland Islands
Southend
  • Average maximum temperature for the month: +17°C;
  • Average minimum temperature for the month: +10°C;
  • Highest monthly temperature: +18°C;
  • Lowest monthly temperature: +9°C;

Monthly temperatures:

Average
Aberdeen
Belfast
Birmingham
Bristol
Cardiff
Edinburgh
Glasgow
Inverness
Liverpool
Manchester
Newcastle
Newquay
Shetland Islands
Southend
  • Warmest: July with an average +19°C during the day;
  • Coldest: January with an average +7°C of the day;
  • Hottest month in hottest city: July in Southend;
  • Coldest month in coolest city: February in Shetland Islands;

Winds in United Kingdom during September

Wind speed in United Kingdom in September based on historical data:
Average
Aberdeen
Belfast
Birmingham
Bristol
Cardiff
Edinburgh
Glasgow
Inverness
Liverpool
Manchester
Newcastle
Newquay
Shetland Islands
Southend

September tends to offer light winds averaging 4 m/s. However, coastal cities may experience breezes during the mornings and afternoons.

Comparison between cities in September:

  • Highest average wind speed: Shetland Islands with 7 m/s;
  • Lowest average wind speed: Aberdeen with 3 m/s;
  • Windiest day of the month: Shetland Islands with 8 m/s;
  • The least windy day of the month: Birmingham with 2 m/s;

Humidity and precipitation in United Kingdom in September

Amount of rainfall in mm during September in United Kingdom based on historical data:
Average
Aberdeen
Belfast
Birmingham
Bristol
Cardiff
Edinburgh
Glasgow
Inverness
Liverpool
Manchester
Newcastle
Newquay
Shetland Islands
Southend
September tends to be an extremely humid month with 79% humidity and 72 mm rainfall. In general the humidity tends to be a little lower in mountainous regions and more humid closer to water.

Comparison between cities in September:

Average
Aberdeen
Belfast
Birmingham
Bristol
Cardiff
Edinburgh
Glasgow
Inverness
Liverpool
Manchester
Newcastle
Newquay
Shetland Islands
Southend
  • Highest average rainfall: Glasgow with 100 mm;
  • Lowest average rainfall: Southend with 42 mm;
  • Most number of rainy days: Shetland Islands with 11 rainy days;
  • Least number of rainy days: Southend with 5 rainy days;
  • Highest risk of rain during the day: Shetland Islands with 37%;
  • Least risk of rain during the day: Southend with 17%;
  • Highest average humidity: Shetland Islands with 83%;
  • Lowest average humidity: Southend with 76%;

Tips for traveling to United Kingdom in September

Looking for some tips for traveling to the sun, snow, or whatever you're aiming for United Kingdom? Activities, weather, and clothing are closely linked. In addition, it's important to pack only what you really need so you don't have to worry about heavy packing or paying extra baggage fees.

Here is some advice on what to pack and what kind of activities you can do in the United Kingdom based on the weather that September is expected to bring. The advice applies to the country as a whole – local weather and possible activities may differ somewhat.

Cloudy, mild weather with light winds and very high humidity in September
Avionero

Pack right for September

The weather makes a difference when it comes to packing - especially which items should go in your suitcase. The tips below are designed to help you pack light and right without carrying more than necessary.
  • Cool weather is between warm and cold. This means you can bring long pants and/or a longer skirt and an extra sweater. Be aware that cool days can alternate with cold nights - it may be wise to also pack a hat, gloves and a scarf.
  • Light winds are probably most comfortable in hot weather but is cooling in cool and cold weather. If it is hot (when the air temperature is about 30 degrees), the wind can have a warming effect. A thin, windproof jacket and long trousers help to counteract these effects.
  • High humidity means that the air conducts heat to and from the skin more easily. For example, if the air is hot (above skin temperature), it will be harder to stay cool. On the other hand, if the air is cool or cold, it is more difficult to stay warm. In high humidity, the choice of clothing makes less of a difference. However, your physical activity plays a bigger role.

FAQ

Frequently asked questions about the weather in United Kingdom in September:

What can you do outside when it's warm in United Kingdom?

Bathing and sunbathing can be suitable. Warm (but not hot) days are also good for activities that are not so physically demanding: sightseeing on foot, by boat, on a scooter, camel riding. You can also exercise easily as long as you make sure to cool down and quench thirst.

Is September a good time to visit United Kingdom?

It’s always a good time to visit United Kingdom, but the weather is changeable in September, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.

Monthly weather in United Kingdom

Source of the data

For this page, we’ve looked at the typical weather in United Kingdom, based on historical hourly weather data from January 1, 1979, to December 31, 2022.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.