Monthly Weather in Cardiff, United Kingdom
What is the average monthly temperature in Cardiff?
The average monthly temperature in Cardiff, Wales, United Kingdom ranges from 6°C (42.8°F) in January to 17.4°C (63.3°F) in June. Cardiff temperature by month is given in the table below.
| Month | Celsius | Fahrenheit |
|---|---|---|
| January | 6.0°C | 42.8°F |
| February | 6.6°C | 43.9°F |
| March | 7.4°C | 45.3°F |
| April | 9.0°C | 48.2°F |
| May | 13.2°C | 55.8°F |
| June | 17.4°C | 63.3°F |
| July | 16.2°C | 61.2°F |
| August | 16.4°C | 61.5°F |
| September | 17.2°C | 63.0°F |
| October | 13.1°C | 55.6°F |
| November | 8.9°C | 48.0°F |
| December | 8.6°C | 47.5°F |
What is the hottest month in Cardiff?
The hottest months in Cardiff are June, September and August. During June the average temperature outside is 17.4°C (63.3°F), in September it is 17.2°C (63°F) and during August the air temperature is around 16.4°C (61.5°F).
What is the coldest month in Cardiff?
The coldest months in Cardiff are January, February and March. In January the average air temperature drops to 6°C (42.8°F), in February air temperature is 6.6°C (43.9°F) and during March it is 7.4°C (45.3°F).
How much does it rain on average in Cardiff?
On average it rains for 12 month(s) in Cardiff, United Kingdom with an average of 22.8 days of rain per month. In total Cardiff has 274 rainy days in a year.
When does it rain the most in Cardiff?
In Cardiff it rains the most during the following months.
- November - on average 6.48mm (0.26 inches) of rainfall per day.
- December - on average 6.29mm (0.25 inches) of rainfall per day.
- October - on average 5.71mm (0.22 inches) of rainfall per day.
- March - on average 5.63mm (0.22 inches) of rainfall per day.
- July - on average 4.85mm (0.19 inches) of rainfall per day.
- January - on average 4.02mm (0.16 inches) of rainfall per day.
Does it snow in Cardiff?
Yes, it snows in Cardiff. The following months have the most amount of snow.
- January. Cardiff has 0.01mm (0 inches) of snowfall and 0.29 mm (0.01 inches) of snow on the ground in January.
When is it windy in Cardiff?
The windiest months in Cardiff, United Kingdom are December, November and July. In December the average windspeed is 32.6 km/h (20.3 mph), during November the windspeed is 29 km/h (18 mph) and in July the windspeed is 28.1 km/h (17.5 mph).
What are the least windy months in Cardiff?
The least windy months in Cardiff are May, June and September. In May the average windspeed is 22.1 km/h (13.7 mph), during June the windspeed is 22.9 km/h (14.2 mph) and in September the windspeed is 23.2 km/h (14.4 mph).
When is it cloudy in Cardiff?
The cloudiest months in Cardiff, United Kingdom are December, March and November. On average in December 80.9% of sky is covered by clouds, in March 80.7% is covered by clouds and in November clouds cover about 68.8% of sky.
When does Cardiff have the clearest sky?
Cardiff has the clearest sky in June, May and September. In June 37.7% of sky is covered by clouds, in May clouds cover around 37.8% and during September clouds cover about 51.8% of sky.
What is the average daylight duration in Cardiff?
The average daylight duration in Cardiff is 12 hours 15 minutes 49 seconds.
Which months have the most daylight in Cardiff?
The longest days in Cardiff are during June, July and May.
- June - 16 hours 32 minutes 48 seconds of daylight.
- July - 16 hours 5 minutes 49 seconds of daylight.
- May - 15 hours 37 minutes 2 seconds of daylight.
Which months have the least daylight in Cardiff?
The shortest days in Cardiff are during December, January and November.
- December - 7 hours 55 minutes 41 seconds of daylight.
- January - 8 hours 26 minutes 9 seconds of daylight.
- November - 8 hours 53 minutes 59 seconds of daylight.
What are the humidity levels in Cardiff throughout the year?
Humidity levels in Cardiff, United Kingdom range from 73.5% in June to 88.7% in December.
What are the pressure levels in Cardiff throughout the year?
Pressure levels in Cardiff change from 1004.7 mb (millibars) in November to 1028.7 mb in February.
What is the visibility in Cardiff throughout the year?
Visibility in Cardiff changes from lowest 12.5 km (7.8 miles) in October to highest 17.6 km (10.9 miles) in August.
What are the UV levels in Cardiff throughout the year?
UV levels change in Cardiff from 0.9 in December to 6.9 in May.
Which months have the highest UV levels in Cardiff throughout the year?
In Cardiff, United Kingdom the highest UV index is during May, June and July. During May the average UV index is 6.9, in June UV level is 6.7 and in July UV index is around 6.5.
Which months have the lowest UV levels in Cardiff throughout the year?
The lowest UV levels in Cardiff are in December, January and November. In December the average UV index is around 0.9, in January UV index is 1.1 and during November UV level is 1.9.