Weathermondo.com
Northern IrelandThe weather in May in Derry
It's cool to moderate in May in Derry with an average temperature of 15°C. Temperatures this month range from a low of 12°C to a high of 17°C. At night, you can expect temperatures between 6°C and 10°C.
Looking for sun and warm weather? May isn’t a good month to be in Derry. The temperatures are too low for a warm stay this month.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in May for Derry, Northern Ireland. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 25°C in 2017, Derry reached the highest temperature in May over the past 10 years. The lowest daytime temperature in this month was 7°C in 2015. The extreme nighttime temperatures ranged from a lowest recorded value of -1°C to a highest value of 14°C.
Rainfall amount
In May, there is an average of 66 mm of precipitation, spread over 10 days. The wind speed is around 4 Bft, mostly coming from the South.
Daily weather in May for Derry
Click on any day in May to get detailed info about the usual weather on that day in Derry. Check out the historical temperatures and precipitation over the past 10 years on this day.
May weather comparison
| Derry | New York | |
|---|---|---|
| Average temperature | 15°C | 22°C |
| Max. temperature | 17°C | 28°C |
| Min. temperature | 6°C | -5°C |
| Total precipitation | 66 mm | 105 mm |
| Rainy days | 10 days | 14 days |
Start of May
The month of May starts in Derry with cool temps, averaging around 14°C during the day and nights around 8°C.
Mid May
By mid-May, daytime temps rise to around 15°C, with nights around 8°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of May
By the end of May, the average daytime temperature in Derry is around 16°C, while nighttime temps are about 9°C. A shower might pop up, but overall, the weather will be dry and sunny.
UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Check out the climate of Derry for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in May in Derry, Northern Ireland. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in May in Derry
Temperature in May in Derry over the years
Precipitation charts
These charts show the average amount of precipitation in May in Derry, Northern Ireland. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in May in Derry
Total precipitation in May in Derry over the years
Daily UV index in May in Derry
This chart shows the average daily UV index in May in Derry, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in May in Derry
Have you been to Derry in May?
Share your weather experience in May in Derry.
Average weather in Derry by month
Click on a month below to see detailed weather info for Derry. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.