Hillsborough Weather in September

With daytime temperatures of 17°C (63°F) and nighttime lows of 11°C (52°F), September in Hillsborough brings moderate temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 79 mm (3.1 in) falls on average.

Rainfall in Hillsborough in September

You can expect rain on roughly 18 days based on historical data, averaging 79 mm (3.1 in) for the month. This is a month with many wet days but modest rainfall totals, so showers are generally light and easy to manage.

Temperature in Hillsborough in September

Daytime temperatures in Hillsborough reach 17°C (63°F) in September, dropping to 11°C (52°F) at night. Conditions are often most pleasant around the middle of the day. Nights drop to around 11°C (52°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Hillsborough in September

The month experiences a moderate amount of sunlight, with 109 hours of sunshine. This provides a nice balance between sunshine and clouds.

Wind Speed in Hillsborough in September

Wind speeds average 4 m/s (8 knots) during September. At this speed, expect moderate winds that can raise dust and move small branches. Since this is an average, some days have gentle light winds while others experience stronger breezes that are quite noticeable.

Average water temperature in September

The water temperature is 13°C (55°F) — chilly, but perfectly fine for a swim if you're not too sensitive to cold water. A short wetsuit can make longer sessions more comfortable.

If your ideal day consists of dry skies and pleasant temperatures, June, July and August typically offer the best circumstances for Hillsborough.

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Check the conditions for any month of the year.

• January
• February
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• May
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• October
• November
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For a detailed overview over the year and the best time to visit the United Kingdom, check out our Hillsborough's climate page.

Hillsborough Temperature in September

Min Temperature 11°C (52°F)  

Max Temperature 17°C (63°F)  

Water Temperature 13°C (55°F) *  

Chance of Rain 59%  

Precipitation 79 mm (3.1 in)  

Rainy days 18 days  

Humidity 91% *  

Windspeed 4 m/s (8 knots) *  

Sunshine 109 hours *  

Percentage Sunshine 28% *  

* Data from: Belfast, Ireland (22 KM, 14 Miles).

What to Wear in Hillsborough in September

Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days. With water temperatures around 13°C (55°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Hillsborough in September

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

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United Kingdom, check out our Hillsborough's climate page.

More climate data for Hillsborough

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Hillsborough climate overview or explore weather in the United Kingdom.