Average weather for Lannion in May
It's cool to moderate in May in Lannion with an average temperature of 17°C. Temperatures this month range from a low of 14°C to a high of 19°C. At night, you can expect temperatures between 8°C and 12°C.
Start of May
The month of May starts in Lannion with cool temps, averaging around 16°C during the day and nights around 10°C. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry.
Mid May
By mid-May, daytime temps rise to around 17°C, with nights around 10°C. Not much precipitation expected during this period. It’s mostly dry and sunny.
End of May
By the end of May, the average daytime temperature in Lannion is around 18°C, while nighttime temps are about 12°C. A shower might pop up, but overall, the weather will be dry and sunny.
In May, there is an average of 41 mm of precipitation, spread over 10 days. The wind speed is around 4 Bft, mostly coming from the South.
Lannion in May |
New York | ||
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17°C | 22°C | |
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19°C | 28°C | |
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14°C | -5°C | |
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41 mm | 105 mm | |
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10 days | 14 days |
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is May a good time to visit Lannion?
Looking for sun and warm weather? May isn’t a good month to be in Lannion. The temperatures are too low for a warm stay this month.
Temperature records
With 27°C in 2017, Lannion reached the highest temperature in May over the past 10 years. The lowest daytime temperature in this month was 10°C in 2019. The extreme nighttime temperatures ranged from a lowest recorded value of 2°C to a highest value of 16°C.
Check out the climate of Lannion for all months and discover the best travel time
Curious about the weather in other parts of France? Check out the climate and weather for spots like Paris, Côte d'Azur, Bretagne, or explore other destinations in France.
Daily Temperature in May in Lannion
This chart shows the average daily high and low temperatures in May for Lannion, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in May in Lannion
The chart below shows the average daily precipitation in May for Lannion, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for May, you can expect about 10 days of precipitation in Lannion.
Daily UV index in May in Lannion
This chart shows the average daily UV index in May in Lannion, 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.
Temperature in May in Lannion over the years
This chart shows the average temperature in May in Lannion, measured in degrees Celsius, over the past few years.
Total precipitation in May in Lannion over the years
This chart shows the average precipitation in May in Lannion, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in May for Lannion
Click on any day in May to get detailed info about the usual weather on that day in Lannion. Check out the historical temperatures and precipitation over the past 10 years on this day.































Weather experiences in May in Lannion
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Average weather in Lannion by month
Click on a month below to see detailed weather info for Lannion. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.