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June Weather in Letterkenny, Ireland

Last updated: August 23, 2025

The average temperature in Letterkenny, Ireland during June hovers around 13°C (56°F), with minimums dipping to 5°C (41°F) and maximums reaching up to 27°C (81°F). Rain is a frequent visitor, with a precipitation amount of 102 mm (4.0 in) spread over 17 days. Expect a high average humidity of 83%, making for a rather moist atmosphere throughout the month.

June Temperature in Letterkenny

In June in Letterkenny, the average temperature is 13°C (56°F). Maximums can reach 27°C (81°F), and minimums can be as low as 5°C (41°F). This makes it a great time for travelers to enjoy a mix of warm days and cooler nights while exploring the area.

June Weather in Letterkenny: Daily Temperature Highs, Lows, and Averages

The chart illustrates June temperature patterns in Letterkenny, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Letterkenny, June typically has an average temperature of 13°C (56°F), with highs reaching up to 27°C (81°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec424244475256585855504643
Data source: Temperature data for Letterkenny 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.

June Precipitation in Letterkenny

In Letterkenny in June, the precipitation amount is 102 mm (4.0 in) spread over 17 days.

June Precipitation Trends in Letterkenny

The chart displays monthly precipitation patterns in Letterkenny, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In Letterkenny, June typically receives around 102 mm (4.0 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec85123111598210298146104124108124
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in Letterkenny

In Letterkenny in June humidity is 83%. With an average temperature of 13°C (56°F), this humidity feels like a damp blanket wrapping around you, making travel a bit uncomfortable as the air feels heavy and the moisture clings to your skin.

June Average Humidity in Letterkenny

This chart illustrates the average monthly humidity levels in Letterkenny, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in Letterkenny is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%84%83%84%83%84%86%86%87%87%88%84%
Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in Letterkenny

In Letterkenny in June, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Letterkenny.

Maximum UV Index Levels in Letterkenny for June

The chart shows the monthly maximum UV Index (UVI) for Letterkenny in June, 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 June, the maximum UV index in Letterkenny typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124568875321
Data source: Letterkenny June 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 June Weather in Letterkenny Compares to Other Months

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

This table compares monthly weather conditions in Letterkenny, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)85 mm (3.3 inches)84%low
February Weather6°C (42°F)123 mm (4.8 inches)84%low
March Weather6°C (44°F)111 mm (4.4 inches)83%moderate
April Weather8°C (47°F)59 mm (2.3 inches)84%moderate
May Weather11°C (52°F)81 mm (3.2 inches)83%high
June Weather13°C (56°F)102 mm (4.0 inches)83%very high
July Weather15°C (59°F)98 mm (3.9 inches)86%very high
August Weather14°C (58°F)146 mm (5.8 inches)86%high
September Weather13°C (55°F)104 mm (4.1 inches)87%moderate
October Weather10°C (51°F)124 mm (4.9 inches)87%moderate
November Weather8°C (46°F)108 mm (4.2 inches)88%low
December Weather6°C (44°F)124 mm (4.9 inches)84%low

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