Oldcastle Weather in September

With daytime temperatures of 18°C (64°F) and nighttime lows of 10°C (50°F), September in Oldcastle brings moderate temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 77 mm (3 in) falls on average.

Rainfall in Oldcastle in September

Climate statistics over the past 30 years suggest around 18 days of rain, with 77 mm (3 in) average for the month. Expect plenty of grey, overcast days rather than intense storms. The rain rarely amounts to much on any given day.

Temperature in Oldcastle in September

September in Oldcastle brings typical temperatures with highs around 18°C (64°F) and lows of 10°C (50°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With overnight lows of 10°C (50°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Oldcastle in September

The area enjoys a balanced 128 hours of sunlight, ensuring it's neither too overcast nor too sunny.

If you prefer enjoying temperate temperatures and rain-free days, July typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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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
• December

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

Oldcastle Temperature in September

Min Temperature 10°C (50°F)  

Max Temperature 18°C (64°F)  

Chance of Rain 60%  

Precipitation 77 mm (3 in)  

Rainy days 18 days  

Humidity 71% *  

Sunshine 128 hours *  

Percentage Sunshine 33% *  

* Data from: Dublin, Ireland (70 KM, 43 Miles).

What to Wear in Oldcastle 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. Rain gear is recommended, you can expect wet weather on multiple days. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Oldcastle 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 Ireland, check out our Oldcastle's climate page.

More climate data for Oldcastle

Temperature Rainfall Sunshine Humidity

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