Castlegregory Weather in September

September in Castlegregory sees daytime temperatures around 18°C (64°F) and lows of 11°C (52°F) at night. With around 96 mm (3.8 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Castlegregory in September

Historically, the month has about 20 days of rain, averaging 96 mm (3.8 in) in total. Rain falls on many days this month, but usually in relatively small amounts. A light waterproof is more useful than a heavy umbrella.

Temperature in Castlegregory in September

September in Castlegregory brings typical temperatures with highs around 18°C (64°F) and lows of 11°C (52°F). During September, you'll experience the summer season. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. 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 Castlegregory in September

The area enjoys a moderate level of sunlight, with around 118 hours. It's a good balance between sunny and cloudy days.

So this is a great month to visit if you prefer dry days with pleasant temperatures.

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

Castlegregory Temperature in September

Min Temperature 11°C (52°F)  

Max Temperature 18°C (64°F)  

Chance of Rain 67%  

Precipitation 96 mm (3.8 in)  

Rainy days 20 days  

Humidity 77% *  

Sunshine 118 hours *  

Percentage Sunshine 30% *  

* Data from: Valentia, Ireland (39 KM, 24 Miles).

What to Wear in Castlegregory 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. Expect heavy rainfall, so bring good rain protection and waterproof bags. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Castlegregory 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 Castlegregory's climate page.

More climate data for Castlegregory

Temperature Rainfall Sunshine Humidity

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