Cardiff
United Kingdom
Long-term weather forecast
Long-term weather forecast

June weather forecast and climate
Cardiff, United Kingdom

June, the first month of the summer, in Cardiff, is still a comfortable month, with average temperature ranging between min 11°C (51.8°F) and max 19.8°C (67.6°F).

Temperature

In June, the average high-temperature is practically the same as in May - a still comfortable 19.8°C (67.6°F). In Cardiff, the average low-temperature is 11°C (51.8°F).

Rainfall

June is the month with the least rainfall. Rain falls for 10.1 days and accumulates 66.6mm (2.6") of precipitation.

Sea temperature

In Cardiff, in June, the average water temperature is 13.5°C (56.3°F).
Note: At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

Daylight

June has the longest days of the year in Cardiff, with an average of 16.5h of daylight.

Sunshine

In Cardiff, the average sunshine is 6.3h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to the UV radiation for ordinary individuals.
Note: In June, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in June in Cardiff?

In June, the average high-temperature is 19.8°C (67.6°F), and the average low-temperature is 11°C (51.8°F).

How much does it rain in Cardiff in June?

In Cardiff, during June, the rain falls for 10.1 days and regularly aggregates up to 66.6mm (2.6") of precipitation.

What is the driest month in Cardiff?

June is the month with the least rainfall. Rain falls for 10.1 days and accumulates 66.6mm (2.6") of precipitation.

How cold is the water in June in Cardiff?

In Cardiff, the average seawater temperature in June is 13.5°C (56.3°F). Swimming in 13.5°C (56.3°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

When are the longest days in Cardiff?

June has the longest days of the year in Cardiff, with an average of 16.5h of daylight.

How many hours of daylight does Cardiff have in June?

The average length of the day in June in Cardiff, United Kingdom, is 16.5h.

How many hours of sunshine does Cardiff have in June?

In Cardiff, the average sunshine in June is 6.3h.

When is the highest UV index in Cardiff?

Months with the highest UV index in Cardiff are June through August, with an average maximum UV index of 6.

How high is the UV index in June in Cardiff?

In Cardiff, the average daily maximum UV index in June is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in June - Cardiff, United Kingdom
  • Average high temperature in June: 19.8°C

The warmest month (with the highest average high temperature) is July (21.7°C).
The month with the lowest average high temperature is January (8.3°C).

  • Average low temperature in June: 11°C

The month with the highest average low temperature is July (13.1°C).
The coldest month (with the lowest average low temperature) is February (2.1°C).

Average rainfall in June - Cardiff, United Kingdom
  • Average rainfall in June: 66.6mm

The wettest month (with the highest rainfall) is October (133.5mm).
The driest month (with the lowest rainfall) is June (66.6mm).

Average rainfall days in June - Cardiff, United Kingdom
  • Average rainfall days in June: 10.1 days

The month with the highest number of rainy days is January (15.7 days).
The month with the lowest number of rainy days is June (10.1 days).

Average sea temperature in June - Cardiff, United Kingdom
  • Average sea temperature in June: 13.5°C

Best months for swimming (with the highest average sea temperature) are August and September (16.6°C).
The coldest month (with the lowest average sea temperature) is March (8.7°C).

Average daylight in June / Average sunshine in June - Cardiff, United Kingdom
  • Average daylight in June: 16.5h

The month with the longest days is June (Average daylight: 16.5h).
The month with shortest days is December (Average daylight: 7.9h).

  • Average sunshine in June: 6.3h

The month with most sunshine is July (Average sunshine: 6.4h).
The month with least sunshine is December (Average sunshine: 1.6h).

Average UV index in June - Cardiff, United Kingdom
  • Average UV index in June: 6

Months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 0).