Maynooth Weather in September

September in Maynooth brings pleasant temperatures around 18°C (64°F) during the day, dropping to 10°C (50°F) at night, with quite a bit of rainfall expected, averaging around 70 mm (2.8 in) for the month.

Rainfall in Maynooth in September

Climate statistics over the past 30 years suggest around 16 days of rain, with 70 mm (2.8 in) average for the month. With rain spread across many days but low totals, showers are typically short and light rather than heavy.

Temperature in Maynooth in September

In September, Maynooth sees pleasant temperatures, with highs of 18°C (64°F). Nights drop to around 10°C (50°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights cool down to 10°C (50°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Maynooth in September

The area enjoys a moderate level of sunlight, with around 128 hours. It's a good balance between sunny and cloudy days.

Wind Speed in Maynooth 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

At 15°C (59°F), the water is cool but manageable for those who don't mind a bit of a shock getting in. Most people adjust after a few minutes.

Should you favor a climate that's both dry and comfortably warm, July and August typically offer the most agreeable 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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For a detailed overview over the year and the best time to visit Ireland, check out our Maynooth's climate page.

Maynooth Temperature in September

Min Temperature 10°C (50°F)  

Max Temperature 18°C (64°F)  

Water Temperature 15°C (59°F) *  

Chance of Rain 53%  

Precipitation 70 mm (2.8 in)  

Rainy days 16 days  

Humidity 71% *  

Windspeed 4 m/s (8 knots) *  

Sunshine 128 hours *  

Percentage Sunshine 33% *  

* Data from: Dublin, Ireland (23 KM, 14 Miles).

What to Wear in Maynooth 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. With water temperatures around 15°C (59°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 Maynooth in September

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

Swimming

6/10

Cycling

9/10

Walking

9/10

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 Maynooth's climate page.

More climate data for Maynooth

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

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