Knock Weather in September

September in Knock brings moderate temperatures around 18°C (64°F) during the day, dropping to 10°C (50°F) at night, with the driest conditions of the year.

Rainfall in Knock in September

With the driest weather of the year, this month is ideal for outdoor fun. Typically, about 20 days will experience rainfall, with an average of 87 mm (3.4 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 Knock in September

In September, Knock sees moderate temperatures, with highs of 18°C (64°F). Nights drop to around 10°C (50°F). Conditions are often most pleasant around the middle of the day. With overnight lows of 10°C (50°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Knock in September

The area sees fewer sunny days, with a projection of about 93 hours of sunshine. This reduced sunlight makes it ideal for those who prefer overcast conditions over bright sunny days.

Wind Speed in Knock in September

In September, average wind speeds reach 4 m/s (8 knots), leading to light to moderate breezes. Conditions vary from day to day, with both calm and windier periods.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.

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 Ireland, check out our Knock's climate page.

Knock Temperature in September

Min Temperature 10°C (50°F)  

Max Temperature 18°C (64°F)  

Chance of Rain 68%  

Precipitation 87 mm (3.4 in)  

Rainy days 20 days  

Humidity 83% *  

Windspeed 4 m/s (8 knots) *  

Sunshine 93 hours *  

Percentage Sunshine 26% *  

* Data from: Claremorris, Ireland (9 KM, 5 Miles).

What to Wear in Knock in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. With limited sunshine expected, sunglasses aren't a priority for packing.

What To Do in Knock in September

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

Swimming

4/10

Cycling

6/10

Walking

6/10

Camping

4/10

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 Ireland, check out our Knock's climate page.

More climate data for Knock

Temperature Rainfall Sunshine Humidity Wind Speed

See the full Knock climate overview or explore weather in Ireland.