Cardiff Weather in April

During April, Cardiff experiences moderate daytime temperatures of 13°C (55°F) and cooler nights around 6°C (43°F). Expect quite a bit of rainfall. Around 78 mm (3.1 in) is typical.

Rainfall in Cardiff in April

Based on our climate data of the past 30 years, about 15 days of rain are anticipated, with 78 mm (3.1 in) on average. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.

Temperature in Cardiff in April

In April, expect moderate temperatures in Cardiff, with highs of 13°C (55°F) and lows of 6°C (43°F) at night. Conditions are often most pleasant around the middle of the day. With overnight lows of 6°C (43°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Cardiff in April

The month brings about 180 hours of sunlight, offering a comfortable mix of sun and overcast.

Wind Speed in Cardiff in April

Average wind conditions reach 5 m/s (10 knots) in April. This creates lively weather with fresh winds that make small trees sway noticeably. Remember this is an average: some days are less windy while others have particularly active windy conditions.

Average water temperature in April

At 9°C (48°F), the water is too cold for most people to swim comfortably. A wetsuit is pretty much essential if you plan to go in.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. July and August typically offer the best weather for Cardiff.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United Kingdom, check out our Cardiff's climate page.

Cardiff Temperature in April

Min Temperature 6°C (43°F)  

Max Temperature 13°C (55°F)  

Water Temperature 9°C (48°F)  

Chance of Rain 50%  

Precipitation 78 mm (3.1 in)  

Rainy days 15 days  

Humidity 74%  

Windspeed 5 m/s (10 knots)  

Sunshine 180 hours  

Percentage Sunshine 41%  

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Cardiff typically stay consistent throughout April, with daily highs averaging around 13°C (55°F). Nights are cold, with lows typically ranging from 4°C (39°F) to 7°C (45°F).

Average temperatures in April

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Daily Historical Precipitation

50-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in April

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‹ January February March April May June July August September October November December ›

Historical weather for Cardiff in April

Browse day-by-day weather records for Cardiff spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

‹ 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 ›

‹ January February March April May June July August September October November December ›

Cardiff historical weather extremes in April

According to our 50 years of weather records for Cardiff, the following extremes were recorded between 1976 and 2026.

• Cardiff recorded its highest April temperature of 24°C (75°F) on April 30, 2025.
• The lowest daytime temperature in April was 3°C (37°F), recorded on April 26, 1981.
• Cardiff registered its coldest April night on April 5, 1990, with temperatures dropping to -5°C (23°F).
• The heaviest April precipitation occurred on April 30, 1991, when 37 mm (1.5 in) of precipitation fell.

What to Wear in Cardiff in April

Pack for changing conditions in Cardiff in April. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Rain gear is recommended, you can expect wet weather on multiple days. Expect water temperatures of around 9°C (48°F), which is definitely too cold for comfortable swimming. Your luggage space is better used for other items. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Cardiff in April

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

6/10

Walking

6/10

Camping

4/10

Outdoor sports

6/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United Kingdom, check out our Cardiff's climate page.

More climate data for Cardiff

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Cardiff climate overview or explore weather in the United Kingdom.