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May Weather in Shannon, United States

Last updated: June 24, 2025

In Shannon, United States, the average temperature in May is a comfortable 16°C (61°F). However, be prepared for some extremes with minimum temperatures dropping to -2°C (28°F) and maximums soaring to 34°C (94°F). You can expect 148 mm (5.8 in) of precipitation over approximately 14 days, contributing to an average humidity level of 78%.

May Temperature in Shannon

In May in Shannon, the average temperature is 16°C (61°F). The maximum can reach 34°C (94°F), while the minimum can drop as low as -2°C (28°F). Be prepared for a wide range of temperatures when traveling during this time.

May Weather in Shannon: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Shannon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Shannon, May typically has an average temperature of 16°C (61°F), with highs reaching up to 34°C (94°F) and lows dropping to around -2°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec222438476172757266523731
Data source: Temperature data for Shannon 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.

May Precipitation in Shannon

In Shannon in May, the total precipitation amount is 148 mm (5.8 in) over the course of 14 days.

May Precipitation Trends in Shannon

The chart displays monthly precipitation patterns in Shannon, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Shannon, May typically receives around 148 mm (5.8 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec58587310014811984931211104650
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Shannon

In Shannon in May, humidity is 78%. With an average temperature of 16°C (61°F), this humidity feels like a warm, sticky embrace, making travel somewhat uncomfortable as it clings to your skin and creates a heavy atmosphere that can drain your energy.

May Average Humidity in Shannon

This chart illustrates the average monthly humidity levels in Shannon, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Shannon is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%85%85%78%80%78%76%79%83%88%82%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Shannon

In Shannon in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Shannon.

Maximum UV Index Levels in Shannon for May

The chart shows the monthly maximum UV Index (UVI) for Shannon in May, 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 May, the maximum UV index in Shannon typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34689101098532
Data source: Shannon May 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 May Weather in Shannon Compares to Other Months

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

This table compares monthly weather conditions in Shannon, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (23°F)58 mm (2.3 inches)85%moderate
February Weather-4°C (25°F)58 mm (2.3 inches)85%moderate
March Weather3°C (38°F)73 mm (2.9 inches)85%high
April Weather9°C (48°F)100 mm (3.9 inches)85%very high
May Weather16°C (61°F)148 mm (5.8 inches)78%very high
June Weather22°C (72°F)119 mm (4.7 inches)80%very high
July Weather24°C (76°F)84 mm (3.3 inches)78%very high
August Weather22°C (72°F)93 mm (3.7 inches)76%very high
September Weather19°C (67°F)121 mm (4.8 inches)79%very high
October Weather11°C (53°F)110 mm (4.3 inches)83%moderate
November Weather3°C (37°F)46 mm (1.8 inches)88%moderate
December Weather-1°C (31°F)50 mm (2.0 inches)81%low

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