Cardiff weather and climate
Cardiff weather and climate
Day
8 °C
Night
3 °C
Sea
9 °C
Precipitation
109 mm
in month
Rainy days
16 days
in month
Daylight
8 hours
average
Sunshine
2 hours
average
Humidity
92 %
Day
8 °C
Night
3 °C
Sea
9 °C
Precipitation
109 mm
in month
Rainy days
16 days
in month
Daylight
8 hours
average
Sunshine
2 hours
average
Humidity
92 %
Overview: Cardiff
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Weather overview for Cardiff
Weather overview
In Cardiff, situated in the United Kingdom, you can expect a generally mild climate. Daytime temperatures vary from 8 °C (46 °F) in the coldest month of January to a comfortable 21 °C (70 °F) in the warm and pleasant month of July. Nighttime temperatures are also moderate, ranging from a chilly 2 °C (36 °F) in February to a mild 13 °C (55 °F) in July. The driest month in Cardiff is July, with an average of 11 days with measurable precipitation, while November is the most precipitous with an average of 16 days.
January weather
January is characterized by the lowest daytime temperatures of the year in Cardiff. The highest wind speeds are also recorded in January.
February weather
In February, Cardiff experiences its lowest nighttime temperatures, averaging 2 °C (36 °F). This month marks the beginning of a decrease in the average number of rainy days to 13 days, and an increase in average daily sunshine hours to 2 hours.
March weather
Cardiff sees the onset of rising temperatures in March, with night temperatures averaging 4 °C (39 °F) and day temperatures increasing to 10 °C (50 °F). A boost in the number of daily sunshine hours to 4 hours is also noticeable.
April weather
April in Cardiff continues the warming trend, with daytime temperatures reaching 13 °C (55 °F) and nighttime temperatures increasing to 5 °C (41 °F). A decline in the average number of rainy days to 12 days is observed, and the lowest average rainfall for the year at 62 mm (2.43 in). The average sunshine hours continue to rise, now totaling 5 hours.
May weather
In May, Cardiff experiences further rises in temperatures, both during the day and at night. Average daily sunshine hours also increase to 6 hours. Additionally, this month is noted for the lowest average humidity, recorded at 82 %.
June weather
As the tourist season begins, June in Cardiff shows similar increases in day temperatures, now at 19 °C (66 °F), and night temperatures continue to warm, reaching 11 °C (52 °F). The maximum in the average number of daily sunshine hours is reached at 7 hours, and the wind speed hits a yearly low at 4 m/s.
July weather
July in Cardiff showcases the highest daytime temperatures at 21 °C (70 °F), with nighttime temperatures peaking at 13 °C (55 °F) as well. The tourist season is in full swing, with the least number of rainy days seen at 11 days, even as the average rainfall begins to increase at 73 mm (2.87 in).
August weather
August in Cardiff still promises warm temperatures, but there is a slight start in the increase of the average number of rainy days to 13 days, along with a rise in average rainfall to 85 mm (3.34 in).
September weather
September in Cardiff marks the beginning of a decrease in day and night temperatures, with night temperatures averaging 11 °C (51 °F). The number of daily sunshine hours starts to decrease to 5 hours.
October weather
October in Cardiff continues with a noticeable drop in temperatures during the day, averaging 14 °C (58 °F), and at night as well. There is also a beginning of a rise in the average number of rainy days to 15 days, coupled with an increase in average rainfall to 116 mm (4.58 in). Sunshine hours, mirroring the previous month, also show a decline.
November weather
November in Cardiff sees a continued decrease in temperatures both during the day and at night, with night temperatures dipping to 5 °C (42 °F). The month also has the highest rainfall volume, with 118 mm (4.64 in) and the greatest average number of rainy days, at 16 days. The average sunshine hours decrease further to 2 hours.
December weather
December experiences a continued drop in temperatures, with daytime averages of 8 °C (47 °F) and nighttime averages of 3 °C (38 °F) in Cardiff. A start of the decline in rainfall volume to 109 mm (4.28 in) and a decrease in average number of rainy days to 16 days are noticeable. The least amount of daily sunshine hours is also observed at 2 hours.
FAQs
How does the wind speed in Cardiff in January compare to the rest of the year?
January experiences the highest wind speeds in Cardiff, typically averaging 5 m/s, so expect breezier conditions relative to other months.
What is the typical night temperature in Cardiff during February?
February nights in Cardiff are quite cold, averaging 2 °C (36 °F), so be sure to dress warmly.
Can you expect more sunshine in Cardiff during March?
Yes, March promises more sunshine in Cardiff, with an average increase to 4 hours of sun per day.
Is Cardiff in April becoming drier?
April sees a reduction in the number of rainy days, down to 12 days on average, indicating the onset of drier conditions in Cardiff.
How do humidity levels in Cardiff during May compare to other times in the year?
May typically boasts the lowest humidity levels in Cardiff, averaging around 82 % for the month.
Does Cardiff become less windy in June?
Indeed, June has the lowest average wind speeds of the year in Cardiff at about 4 m/s.
Is July considered a dry month in Cardiff?
July is notably the driest month in Cardiff, with the fewest rainy days, roughly 11 days.
How does August's rainfall in Cardiff compare to other months?
August sees a gentle climb in rainfall with an average of 13 days experiencing rain, though it's not the wettest month.
As autumn approaches, how does the sunshine duration change in Cardiff during September?
September witnesses a reduction in daily sunshine, with sunshine hours decreasing to an average of 5 hours per day.
Is Cardiff's weather in October conducive to outdoor activities?
October brings cooler weather appropriate for outdoor activities during the day, with moderate daytime temperatures of 14 °C (58 °F).
What can tourists expect from Cardiff's weather in November?
Tourists can expect Cardiff in November to be cool and wet, with the highest rainfall of the year and decreasing sunshine hours.
How do the short days of December affect Cardiff?
December brings the shortest days to Cardiff, resulting in the least amount of sunshine, averaging about 2 hours daily.