nomadseason

May Weather in Derry, United States

Last updated: June 24, 2025

In Derry, United States, the average temperature in May hovers around 16°C (61°F). However, be prepared for a range, as temperatures can dip to a chilly -3°C (27°F) or rise to a warm 30°C (85°F). During this month, you'll likely experience 158 mm (6.2 in) of precipitation spread over 18 days, contributing to an average humidity of 80%. So, pack your rain gear and enjoy the mix of weather!

May Temperature in Derry

In May in Derry, the average temperature is 16°C (61°F). Maximums can reach 30°C (85°F), while minimums can be as low as -3°C (27°F). Overall, this range of temperatures makes Derry an ideal destination for travelers seeking a mix of mild and warm weather for outdoor activities.

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

The chart illustrates May temperature patterns in Derry, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Derry, May typically has an average temperature of 16°C (61°F), with highs reaching up to 30°C (85°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec293440506168737165554035
Data source: Temperature data for Derry generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Derry

In Derry in May, the total precipitation amount is 158 mm (6.2 in) over a span of 18 days.

May Precipitation Trends in Derry

The chart displays monthly precipitation patterns in Derry, 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 Derry, May typically receives around 158 mm (6.2 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec961351181381591541219212311796118
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

May Humidity in Derry

In Derry in May, humidity is 80%. With an average temperature of 16°C (61°F), this humidity feels like a warm blanket wrapped around you, making sightseeing a sweat-inducing challenge but also lending a lush vibrancy to the surroundings that can enhance your travel experience.

May Average Humidity in Derry

This chart illustrates the average monthly humidity levels in Derry, 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 Derry is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%89%88%80%79%74%64%67%81%89%88%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Derry

In Derry in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Derry.

Maximum UV Index Levels in Derry for May

The chart shows the monthly maximum UV Index (UVI) for Derry 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 Derry typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910101098642
Data source: Derry 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 Derry Compares to Other Months

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

This table compares monthly weather conditions in Derry, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)96 mm (3.8 inches)89%moderate
February Weather1°C (34°F)135 mm (5.3 inches)90%moderate
March Weather4°C (40°F)117 mm (4.6 inches)89%high
April Weather10°C (50°F)137 mm (5.4 inches)88%very high
May Weather16°C (61°F)158 mm (6.2 inches)80%very high
June Weather20°C (68°F)154 mm (6.1 inches)79%very high
July Weather23°C (73°F)121 mm (4.8 inches)74%very high
August Weather22°C (71°F)92 mm (3.6 inches)64%very high
September Weather19°C (66°F)123 mm (4.8 inches)67%very high
October Weather13°C (56°F)116 mm (4.6 inches)81%high
November Weather5°C (41°F)96 mm (3.8 inches)89%moderate
December Weather1°C (35°F)118 mm (4.6 inches)88%low

Compare Derry's Climate with Cities Worldwide