Randalstown weather in September (Antrim County, United Kingdom)

What kind of weather does September bring to Randalstown? Here’s a detailed forecast of the month’s weather patterns.

Temperatures

During September, Randalstown usually has moderate temperatures and moderate rainfall. Throughout the daytime, temperatures often hover around 17°C. However, as the sun sets and evening approaches, there's a noticeable cool-down. Temperatures gently drop to a more temperate 10°C.

Precipitation

Randalstown in September usually receives moderate rainfall, averaging around 78 mm for the month. According to historical climate patterns, there are usually around 19 days days of rain.

Average sunshine

Expect a moderate amount of sunlight, with approximately 109 hours. This means a pleasant mix of sun and clouds.

In case you lean more towards enjoying temperate temperatures and rain-free days July typically offers the most optimal weather. In contrast, January, February and December tend to have less optimal conditions.

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

 

Randalstown, monthly averages in September

Min Temperature 10°C  

Max Temperature 17°C  

Water Temperature 13°C *  

Chance of Rain 64%  

Precipitation 78 mm  

Rainy days 19 days  

Humidity 91% *  

Windspeed 14 km/h *  

Sunshine 109 hours *  

Percentage Sunshine 28% *  

Data from: Belfast, Ireland (12 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 Randalstown, 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. With a water temperature of around 13°C there is no need to bring your swimwear.

What To Do

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

Swimming

6/10

Cycling

6/10

Walking

6/10

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 Randalstown.

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.