September Weather in Conna, Ireland

Last updated: August 23, 2025

In September, the average temperature in Conna, Ireland hovers around 14°C (57°F), with minimums dipping to 4°C (40°F) and maximums soaring to 22°C (72°F). This month typically sees 77 mm (3.0 in) of precipitation over 13 days, contributing to a relatively high humidity level of around 85%.

September Temperature in Conna

In September in Conna, the average temperature is 14°C (57°F). Maximums can reach 22°C (72°F), and minimums can be as low as 4°C (40°F). It's a great time for travelers to enjoy mild weather while exploring the beautiful sights of Conna.

September Weather in Conna: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Conna, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Conna, September typically has an average temperature of 14°C (57°F), with highs reaching up to 22°C (72°F) and lows dropping to around 4°C (40°F).

Data source: Temperature data for Conna generated using information from the Copernicus Climate Change Service.

September Precipitation in Conna

In Conna in September, the precipitation amount is 77 mm (3.0 in) spread over a total of 13 days.

September Precipitation Trends in Conna

The chart displays monthly precipitation patterns in Conna, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Conna, September typically receives around 77 mm (3.0 inches) of precipitation spread over approximately 13 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Conna

In Conna in September, humidity is 85%. With an average temperature of 14°C (57°F), this humidity feels like a thick blanket enveloping you, making travel feel heavy and sluggish.

September Average Humidity in Conna

This chart illustrates the average monthly humidity levels in Conna, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Conna is approximately 85%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Conna

In Conna in September, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Conna.

Maximum UV Index Levels in Conna for September

The chart shows the monthly maximum UV Index (UVI) for Conna in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Conna typically reaches 5, which falls under the moderate exposure category.

Data source: Conna September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How September Weather in Conna Compares to Other Months

Weather in Conna varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Conna, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Conna, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (44°F)	68 mm (2.7 inches)	83%	low
February Weather	7°C (45°F)	124 mm (4.9 inches)	85%	low
March Weather	7°C (45°F)	97 mm (3.8 inches)	84%	moderate
April Weather	9°C (48°F)	80 mm (3.2 inches)	84%	moderate
May Weather	11°C (52°F)	75 mm (3.0 inches)	84%	high
June Weather	14°C (57°F)	67 mm (2.6 inches)	85%	very high
July Weather	16°C (61°F)	70 mm (2.8 inches)	85%	very high
August Weather	15°C (60°F)	103 mm (4.1 inches)	84%	high
September Weather	14°C (57°F)	77 mm (3.0 inches)	85%	moderate
October Weather	11°C (53°F)	121 mm (4.7 inches)	86%	moderate
November Weather	9°C (48°F)	115 mm (4.5 inches)	84%	low
December Weather	8°C (46°F)	129 mm (5.1 inches)	83%	low