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September Weather in Crossmolina, Ireland

Last updated: August 23, 2025

In September, the average temperature in Crossmolina, Ireland is a mild 13°C (55°F). However, you can expect a minimum of 2°C (36°F) and a pleasant maximum of 24°C (76°F). The month brings about 94 mm (3.7 in) of precipitation, typically spread over 18 days, contributing to an average humidity of 88%. Ideal for those who enjoy a fresh atmosphere!

September Temperature in Crossmolina

In September in Crossmolina, the average temperature is 13°C (55°F). Maximum temperatures can reach 24°C (76°F), while minimums can drop as low as 2°C (36°F). This makes it a great time to explore Crossmolina, so be sure to pack layers to enjoy the varied weather!

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

The chart illustrates September temperature patterns in Crossmolina, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Crossmolina, September typically has an average temperature of 13°C (55°F), with highs reaching up to 24°C (76°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec434344475256595855504644
Data source: Temperature data for Crossmolina generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Crossmolina

In Crossmolina in September, the precipitation amount is 94 mm (3.7 in) spread over 18 days.

September Precipitation Trends in Crossmolina

The chart displays monthly precipitation patterns in Crossmolina, 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 Crossmolina, September typically receives around 94 mm (3.7 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec8813111366799310014994129111119
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Crossmolina

In Crossmolina in September humidity is 88%. With an average temperature of 13°C (55°F), this humidity feels like a damp chill that clings to your skin, making it essential to dress in layers while exploring, as the moisture in the air can lead to a rather uncomfortable experience for traveling.

September Average Humidity in Crossmolina

This chart illustrates the average monthly humidity levels in Crossmolina, 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 Crossmolina is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%87%86%83%83%85%85%88%91%92%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Crossmolina

In Crossmolina 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 Crossmolina.

Maximum UV Index Levels in Crossmolina for September

The chart shows the monthly maximum UV Index (UVI) for Crossmolina 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 Crossmolina typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875321
Data source: Crossmolina 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 Crossmolina Compares to Other Months

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

This table compares monthly weather conditions in Crossmolina, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)87 mm (3.4 inches)88%low
February Weather6°C (43°F)131 mm (5.1 inches)88%low
March Weather6°C (44°F)113 mm (4.5 inches)87%moderate
April Weather9°C (48°F)66 mm (2.6 inches)86%moderate
May Weather11°C (52°F)79 mm (3.1 inches)83%high
June Weather13°C (56°F)93 mm (3.7 inches)83%very high
July Weather15°C (59°F)100 mm (3.9 inches)85%very high
August Weather15°C (58°F)149 mm (5.9 inches)85%high
September Weather13°C (55°F)94 mm (3.7 inches)88%moderate
October Weather10°C (51°F)129 mm (5.1 inches)91%moderate
November Weather8°C (46°F)111 mm (4.4 inches)92%low
December Weather7°C (44°F)119 mm (4.7 inches)89%low

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