Normal weather for Cardiff in May
It's cool to moderate in May in Cardiff with an average temperature of 16°C. Temperatures this month range from a low of 13°C to a high of 19°C. At night, you can expect temperatures between 7°C and 12°C.
In May, there is an average of 63 mm of precipitation, spread over 9 days. The wind speed is around 4 Bft, mostly coming from the South.
Looking for sun and warm weather? May isn’t a good month to be in Cardiff. The temperatures are too low for a warm stay this month.
Cardiff in May |
New York | ||
|---|---|---|---|
 Average Temperature |
16°C | 22°C | |
 High Temp |
19°C | 28°C | |
| Low Temp |
13°C | 17°C | |
 Total Precipitation |
63 mm | 105 mm | |
| Rainy Days |
9 days | 14 days | |
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.
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Start of May
The month of May starts in Cardiff with cool temps, averaging around 16°C during the day and nights around 8°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 9°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 Cardiff is around 18°C, while nighttime temps are about 11°C. A shower might pop up, but overall, the weather will be dry and sunny.
Temperature records
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April
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Daily Temperature in May in Cardiff
This chart shows the average daily high and low temperatures in May for Cardiff, 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 Cardiff
The chart below shows the average daily precipitation in May for Cardiff, 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 9 days of precipitation in Cardiff.
Daily UV Index in May in Cardiff
This chart shows the average daily UV index in May in Cardiff, 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 Cardiff Over the Years
This chart shows the average temperature in May in Cardiff, measured in degrees Celsius, over the past few years.
Total Precipitation in May in Cardiff Over the Years
This chart shows the average precipitation in May in Cardiff, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily Climate in May for Cardiff
Click on any day in May to get detailed info about the usual weather on that day in Cardiff. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in May in Cardiff
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Average Weather in Cardiff by Month
Click on a month below to see detailed weather info for Cardiff. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
