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October Weather in Castlerea, Ireland

Last updated: August 23, 2025

In Castlerea, Ireland, the average temperature in October is a cool 10°C (51°F), with extremes ranging from a brisk -2°C (30°F) to a mild 20°C (68°F). Expect about 116 mm (4.6 in) of precipitation over 17 days, resulting in a high average humidity of 91%. Prepare for a month that feels both refreshing and damp!

October Temperature in Castlerea

In October in Castlerea, the average temperature is 10°C (51°F). Maximums can reach 20°C (68°F), while minimums can drop as low as -2°C (30°F). It’s a great time to visit Castlerea if you enjoy mild temperatures and are prepared for some chilly nights.

October Weather in Castlerea: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Castlerea, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castlerea, October typically has an average temperature of 10°C (51°F), with highs reaching up to 20°C (68°F) and lows dropping to around -2°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec424344485357605955504543
Data source: Temperature data for Castlerea 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.

October Precipitation in Castlerea

In Castlerea in October, the precipitation amount is 116 mm (4.6 in) spread over 17 days.

October Precipitation Trends in Castlerea

The chart displays monthly precipitation patterns in Castlerea, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Castlerea, October typically receives around 116 mm (4.6 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec74122101628292841358411699106
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Castlerea

In Castlerea in October, humidity is 91%. With an average temperature of 10°C (51°F), this humidity feels like a damp chill that clings to your skin, making outdoor exploration uncomfortable and leaving you yearning for warm, dry shelter.

October Average Humidity in Castlerea

This chart illustrates the average monthly humidity levels in Castlerea, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Castlerea is approximately 91%, 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 October generated using information from the Copernicus Climate Change Service.

October UV Index in Castlerea

In Castlerea in October, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Castlerea, you can check the information here.

Maximum UV Index Levels in Castlerea for October

The chart shows the monthly maximum UV Index (UVI) for Castlerea in October, 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 October, the maximum UV index in Castlerea typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875321
Data source: Castlerea October 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 October Weather in Castlerea Compares to Other Months

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

This table compares monthly weather conditions in Castlerea, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (42°F)74 mm (2.9 inches)88%low
February Weather6°C (43°F)122 mm (4.8 inches)88%low
March Weather7°C (44°F)101 mm (4.0 inches)87%moderate
April Weather9°C (48°F)62 mm (2.4 inches)86%moderate
May Weather11°C (53°F)82 mm (3.2 inches)83%high
June Weather14°C (57°F)92 mm (3.6 inches)83%very high
July Weather15°C (60°F)84 mm (3.3 inches)85%very high
August Weather15°C (59°F)135 mm (5.3 inches)85%high
September Weather13°C (56°F)83 mm (3.3 inches)88%moderate
October Weather10°C (51°F)116 mm (4.6 inches)91%moderate
November Weather7°C (46°F)99 mm (3.9 inches)92%low
December Weather6°C (44°F)106 mm (4.2 inches)89%low

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