Cardiff Weather in June

June in Cardiff sees daytime temperatures around 18°C (64°F) and lows of 12°C (54°F) at night. With around 82 mm (3.2 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Cardiff in June

Rain is expected on roughly 14 days, totalling around 82 mm (3.2 in) for the month. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.

Temperature in Cardiff in June

June in Cardiff brings typical temperatures with highs around 18°C (64°F) and lows of 12°C (54°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With lows of 12°C (54°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Cardiff in June

With approximately 194 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

Wind Speed in Cardiff in June

June sees wind speeds averaging 4 m/s (8 knots). You'll experience variable conditions with moderate winds that create small waves on water and keep branches moving. Conditions range from light winds to moderate breezes throughout the month.

Average water temperature in June

With water at 13°C (55°F), it's on the cooler side. Keen swimmers won't be put off, but those who prefer warm water may find it less enjoyable.

For Cardiff itself, July and August generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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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 June

Min Temperature 12°C (54°F)  

Max Temperature 18°C (64°F)  

Water Temperature 13°C (55°F)  

Chance of Rain 48%  

Precipitation 82 mm (3.2 in)  

Rainy days 14 days  

Humidity 73%  

Windspeed 4 m/s (8 knots)  

Sunshine 194 hours  

Percentage Sunshine 42%  

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Cardiff typically stay consistent throughout June, with daily highs averaging around 18°C (64°F). Nights are cool, with lows typically ranging from 10°C (50°F) to 13°C (55°F).

Average temperatures in June

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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 June

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Historical weather for Cardiff in June

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

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Cardiff historical weather extremes in June

The extremes listed below come from historical weather data collected in Cardiff from 1976 through 2025.

• The hottest June day on record in Cardiff reached 32°C (90°F) (June 29, 1976).
• The lowest daytime temperature in June was 11°C (52°F), recorded on June 5, 1991.
• Cardiff registered its coldest June night on June 4, 1991, with temperatures dropping to 2°C (36°F).
• The wettest June day on record brought 46 mm (1.8 in) of precipitation to Cardiff (June 18, 2020).

What to Wear in Cardiff in June

Pleasant temperatures in June mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. The water temperature sits at about 13°C (55°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Cardiff in June

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

Swimming

6/10

Cycling

9/10

Walking

9/10

Camping

8/10

Outdoor sports

9/10

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.