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March Weather in Greencastle, Ireland

Last updated: August 23, 2025

In March, the average temperature in Greencastle, Ireland hovers around 7°C (44°F). Expect chilly nights with temperatures dipping to a minimum of -1°C (30°F), while daytime highs can reach up to 12°C (55°F). Rain is common, with 123 mm (4.8 in) of precipitation spread over 19 days. The air is quite humid too, boasting an average humidity of 86%—perfect for cozy indoor activities!

March Temperature in Greencastle

In March in Greencastle, the average temperature is 7°C (44°F). The maximum can reach 12°C (55°F), and the minimum can be as low as -1°C (30°F). Travelers should be prepared for chilly weather and pack accordingly to enjoy their visit to Greencastle.

March Weather in Greencastle: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Greencastle, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Greencastle, March typically has an average temperature of 7°C (44°F), with highs reaching up to 12°C (55°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec444344465054575856524846
Data source: Temperature data for Greencastle 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.

March Precipitation in Greencastle

In Greencastle in March, the total precipitation amount is 123 mm (4.8 in) spread over 19 days.

March Precipitation Trends in Greencastle

The chart displays monthly precipitation patterns in Greencastle, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Greencastle, March typically receives around 123 mm (4.8 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec1071351236179114118165125169150163
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Greencastle

In Greencastle in March, humidity is 86%. With an average temperature of 7°C (44°F), this humidity feels like a chilly, damp blanket wrapping around you, making outdoor activities uncomfortable and travel quite uninviting.

March Average Humidity in Greencastle

This chart illustrates the average monthly humidity levels in Greencastle, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Greencastle is approximately 86%, 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 March generated using information from the Copernicus Climate Change Service.

March UV Index in Greencastle

In Greencastle in March, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Greencastle for better planning.

Maximum UV Index Levels in Greencastle for March

The chart shows the monthly maximum UV Index (UVI) for Greencastle in March, 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 March, the maximum UV index in Greencastle typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124568875321
Data source: Greencastle March 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 March Weather in Greencastle Compares to Other Months

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

This table compares monthly weather conditions in Greencastle, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (44°F)106 mm (4.2 inches)87%low
February Weather6°C (44°F)135 mm (5.3 inches)86%low
March Weather7°C (44°F)123 mm (4.8 inches)86%moderate
April Weather8°C (47°F)61 mm (2.4 inches)85%moderate
May Weather10°C (51°F)79 mm (3.1 inches)82%high
June Weather12°C (54°F)114 mm (4.5 inches)84%very high
July Weather14°C (57°F)118 mm (4.7 inches)86%very high
August Weather14°C (58°F)165 mm (6.5 inches)86%high
September Weather13°C (56°F)125 mm (4.9 inches)88%moderate
October Weather11°C (53°F)169 mm (6.6 inches)89%moderate
November Weather9°C (49°F)150 mm (5.9 inches)90%low
December Weather8°C (46°F)163 mm (6.4 inches)86%low

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