nomadseason

September Weather in Carndonagh, Ireland

Last updated: August 23, 2025

The average temperature in Carndonagh, Ireland during September hovers around 13°C (56°F). Be prepared for a range, with minimums dipping to 8°C (47°F) and maximums reaching 21°C (69°F). Expect 109 mm (4.3 in) of precipitation spread over 19 days, accompanied by a high average humidity of 88%. Perfect for cozy indoor activities!

September Temperature in Carndonagh

In September in Carndonagh, the average temperature is 13°C (56°F). The maximum can reach 21°C (69°F), and the minimum can be as low as 8°C (47°F). This mild weather makes Carndonagh a pleasant destination for travelers seeking a comfortable climate.

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

The chart illustrates September temperature patterns in Carndonagh, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Carndonagh, September typically has an average temperature of 13°C (56°F), with highs reaching up to 21°C (69°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec444345475155585856524845
Data source: Temperature data for Carndonagh generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Carndonagh

In Carndonagh in September, the precipitation amount is 109 mm (4.3 in) over the course of 19 days.

September Precipitation Trends in Carndonagh

The chart displays monthly precipitation patterns in Carndonagh, 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 Carndonagh, September typically receives around 109 mm (4.3 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec921211095775100101146109141126140
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Carndonagh

In Carndonagh in September, humidity is 88%. With an average temperature of 13°C (56°F), this humidity feels like a thick, warm blanket wrapping around you, making outdoor adventures sticky and challenging.

September Average Humidity in Carndonagh

This chart illustrates the average monthly humidity levels in Carndonagh, 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 Carndonagh is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%85%82%84%86%86%88%89%90%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Carndonagh

In Carndonagh 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 Carndonagh.

Maximum UV Index Levels in Carndonagh for September

The chart shows the monthly maximum UV Index (UVI) for Carndonagh 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 Carndonagh typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124568875321
Data source: Carndonagh 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 Carndonagh Compares to Other Months

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

This table compares monthly weather conditions in Carndonagh, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (44°F)92 mm (3.6 inches)87%low
February Weather6°C (44°F)121 mm (4.8 inches)86%low
March Weather7°C (45°F)109 mm (4.3 inches)86%moderate
April Weather8°C (47°F)57 mm (2.2 inches)85%moderate
May Weather11°C (52°F)75 mm (3.0 inches)82%high
June Weather13°C (55°F)100 mm (3.9 inches)84%very high
July Weather14°C (58°F)101 mm (4.0 inches)86%very high
August Weather15°C (59°F)146 mm (5.7 inches)86%high
September Weather13°C (56°F)109 mm (4.3 inches)88%moderate
October Weather11°C (52°F)141 mm (5.6 inches)89%moderate
November Weather9°C (48°F)126 mm (5.0 inches)90%low
December Weather7°C (46°F)139 mm (5.5 inches)86%low

Compare Carndonagh's Climate with Cities Worldwide