Climate Insights for Cardiff

The climate in Cardiff is hot. The average annual temperature is 27°C and approximately 965 mm of precipitation falls per year. Cardiff receives a notable amount of rainfall throughout the year, including during its driest month. Cardiff is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are February, January, March, when temperatures can drop to 24°C.The climate in Cardiff is hot. The average annual temperature is 80°F and approximately 38 in of precipitation falls per year. Cardiff receives a notable amount of rainfall throughout the year, including during its driest month. Cardiff is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are February, January, March, when temperatures can drop to 75°F.

Cardiff has relatively stable temperatures year-round, staying within a 7°C range. The warmest month is August, when average highs reach 31°C and the mean temperature sits around 29°C. February is the coolest month, with minimum temperatures around 24°C and an average of 25°C. Daily temperature variation is modest, with an average difference of 3°C between highs and lows.Cardiff has relatively stable temperatures year-round, staying within a 12°F range. The warmest month is August, when average highs reach 87°F and the mean temperature sits around 83°F. February is the coolest month, with minimum temperatures around 75°F and an average of 77°F. Daily temperature variation is modest, with an average difference of 6°F between highs and lows.

Cardiff is a moderately rainy area, receiving approximately 965 mm of precipitation annually, which averages out to around 80 mm per month. The wettest month is October, averaging 164 mm of rainfall. November and May also tend to see above-average precipitation. The driest month is July, with just 45 mm. That's 119 mm less than October, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall.Cardiff is a moderately rainy area, receiving approximately 38 in of precipitation annually, which averages out to around 3.1 in per month. The wettest month is October, averaging 6.5 in of rainfall. November and May also tend to see above-average precipitation. The driest month is July, with just 1.8 in. That's 4.7 in less than October, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall.

Cardiff is mildly breezy, with an average annual wind speed of 14km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 16km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 11km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 5km/h gap between the calmest and windiest months.Cardiff is moderately windy, with an average annual wind speed of 9mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is February, averaging 10mph, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in September, with average winds dropping to 7mph, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 3mph gap between the calmest and windiest months.

The table below shows monthly climate averages for Cardiff based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.The table below shows monthly climate averages for Cardiff based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.