June Weather in Cardiff, United Kingdom

Last updated: March 17, 2025

June in Cardiff, United Kingdom, showcases a delightful blend of warmth and occasional showers, with maximum temperatures soaring to 27°C (82°F) and a comforting average of 15°C (60°F). The month experiences a minimum temperature of 7°C (45°F), ensuring mild evenings. While residents and visitors enjoy an average humidity of 80%, it's not without its fair share of rain, totaling 84 mm (3.3 in) over 12 days. This combination of warmth and precipitation creates a lush backdrop, perfect for exploring Cardiff's vibrant parks and historical sites.

June Temperature in Cardiff

In June, Cardiff welcomes the summer with a delightful rise in temperatures, showcasing a clear transition from the cooler spring months. With minimums around 7°C (45°F) and averages of 15°C (60°F), the city begins to bask in the warmth, reaching maximums of 27°C (82°F) on sunny days. This significant uptick in temperature not only marks the arrival of vibrant outdoor activities but also tempts locals and visitors alike to explore the picturesque parks and waterfronts. As the month progresses, you can expect longer days filled with warmth, making June an ideal time to enjoy Cardiff’s lively atmosphere and rich cultural offerings.

June Weather in Cardiff: Daily Temperature Highs, Lows, and Averages

The chart illustrates June temperature patterns in Cardiff, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec424345485460636258534745
Data source: Temperature data for Cardiff generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

June Precipitation in Cardiff

In June, Cardiff experiences a moderate level of precipitation, with 84 mm (3.3 in) of rain falling over approximately 12 days. This marks a slight increase from May's 79 mm, suggesting that as spring transitions into summer, the likelihood of rain remains fairly steady. Interestingly, June's rainfall is comparable to the subsequent month, July, which also sees 85 mm of precipitation. The pattern emerging from these figures indicates a consistent occurrence of rain throughout early summer, setting the stage for the wetter months ahead, particularly October, which usually brings a significant uptick in rainfall. Overall, June serves as a reminder of the unpredictable Welsh weather, where showers can surprise residents and visitors alike, even as the season promises longer, sunnier days.

June Precipitation Trends in Cardiff

The chart displays monthly precipitation patterns in Cardiff, with values for each month alongside June's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec751019857798485978113599130
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in Cardiff

In Cardiff, United Kingdom, June marks a notable shift in humidity levels, maintaining a comfortable 80%, consistent with the gradual decline seen from the higher levels of previous months. Following a steady drop from January's 88%, where the air hangs heavy with moisture, the humidity eases into the summer. This trend continues into July, where it further lowers to 70%, offering a respite for residents as they enjoy the warmer weather. As summer unfolds, a slight uptick in humidity is observed in the later months, but June strikes a balance that heralds the joys of summer while gently easing the damp chill of spring.

June Average Humidity in Cardiff

This chart illustrates the average monthly humidity levels in Cardiff, with June's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how June's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%86%84%80%80%70%73%79%89%90%89%
Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in Cardiff

In June, Cardiff experiences a significant escalation in ultraviolet (UV) exposure, boasting a UV Index of 8, categorized as very high. This peak indicates that sun protection is crucial, with a burn time of just 15 minutes for unprotected skin. This trend marks a clear shift from the milder indices seen in earlier months, such as January and February, where the UV Index hovered around 1 and 2, reflecting a low risk of harm from sun exposure. As summer approaches, the escalating UV levels in June highlight the importance of taking precautions, especially since the intensity is comparable to that in July. By understanding these trends, residents and visitors can better enjoy the sunny days while protecting their skin. For more details, check the Cardiff UV Index.

Maximum UV Index Levels in Cardiff for June

The chart shows the monthly maximum UV Index (UVI) for Cardiff in June, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec124678876421
Data source: Cardiff June UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

June Sunshine in Cardiff

As June arrives in Cardiff, the city basks in 355 hours of sunshine—a splendid continuation of the warming trend that began in spring. After April's encouraging 303 hours and May's impressive 379 hours, June maintains the momentum, though it sees a slight dip in daylight compared to the preceding month. This gradual decline in sunshine hours is indicative of the transition into the summer season, where the brilliance of July takes center stage with its peak at 399 hours. While June's golden days are fewer than those of early summer, they still offer plenty of opportunity for outdoor adventures, setting the stage for vibrant moments in the heart of the Welsh capital. Overall, Cardiff's June sunshine reflects a beautiful balance between the longer, lively days of late spring and the warm embrace of summer yet to come.

Monthly Sunshine Duration in Cardiff: June Highlighted

The June sunshine duration represents the total number of hours Cardiff experiences direct sunlight during the month of June, excluding cloudy or obstructed periods. This chart compares the sunshine duration of June with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec81h134h192h303h379h355h399h345h279h224h121h100h
Data source: Cardiff June Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Cardiff During June

In June, Cardiff experiences a 27% chance of sunny weather, which continues the trend of fluctuating sunshine typical of the spring season. After the brighter days of April with a notable 52% likelihood of sun, May's 33% suggests a gradual decrease as summer approaches. This slight downturn in sunshine can be attributed to the typical Welsh weather patterns, which often bring more variability in the early summer months. However, as July follows with an increased 41% chance, it's clear that the sunnier days are just around the corner, indicating that while June may not be the sunniest of months, it's a transitional period beckoning the brighter days of summer.

Percentage of Sunny Days in June in Cardiff

The chart illustrates the percentage of sunny days in Cardiff throughout the year, with June highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Cardiff experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec21%23%29%52%33%27%41%30%28%21%31%20%
Data source: Cardiff June chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Cardiff in June

As June arrives in Cardiff, the city basks in an impressive 16 hours of daylight, showcasing the peak of summer's splendor. This remarkable increase from 15 hours in May highlights the escalating daylight trend leading into summer, following a steady ascent from just 8 hours in January. The gradual lengthening of days is a refreshing transition from the winter gloom, with each month offering more sunlight as we move toward the solstice. For locals and visitors alike, June not only marks a time for longer days but also beckons a vibrant array of outdoor activities and community events, making it a cherished month in the Welsh capital. As July maintains this generous daylight, the rhythm of Cardiff embraces the warmth and brightness of summer, suggesting the natural cycle of light and life that invigorates this enchanting city.

Average Daylight Hours in Cardiff for June

The chart illustrates the variation in daylight duration in Cardiff throughout the year, with June highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 24m9h 58m11h 55m13h 54m15h 38m16h 32m16h 3m14h 30m12h 35m10h 36m8h 50m7h 53m
Data source: Cardiff daylight hours, calculated by summing the hours between sunrise and sunset for each day.

June Winds in Cardiff

As summer begins to unfurl in Cardiff, June brings a gentle breeze with an average wind speed of 3.5 m/s (8 mph). This marks a notable decrease from the windier spring months, particularly April's brisk 3.7 m/s. The transition into summer sees the tail end of the wind speed taper off, setting a tranquil atmosphere perfect for outdoor activities. July follows closely with an almost similar breeze, reflecting a continued calm, while the winds gradually pick up again into autumn. This seasonal trend highlights Cardiff's shift from blustery spring days to the serene, still summer, offering a refreshing contrast that residents and visitors alike can enjoy.

Average June Wind Speed in Cardiff

The chart displays monthly wind speed patterns in Cardiff, with values for each month shown alongside June's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how June's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec5.15.74.83.74.73.5 m/s3.44.23.74.84.25.3
Data source: Cardiff June wind data, generated using information from the Copernicus Climate Change Service.

How June Weather in Cardiff Compares to Other Months

The weather in Cardiff changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of June's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Cardiff and find detailed weather information for every month.

In Cardiff, the weather in June contrasts significantly with that in January. June typically enjoys milder temperatures, ranging from a minimum of 7°C (45°F) to a maximum of 27°C (82°F), with an average of 15°C (60°F). During this month, the city experiences about 84 mm (3.3 in) of precipitation over 12 days, accompanied by a humidity level of 80%. In stark contrast, January is much colder, with temperatures dipping as low as -3°C (27°F) and peaking at 13°C (56°F), averaging around 6°C (42°F). Additionally, January sees slightly less precipitation at 75 mm (3.0 in) over the same number of days, but the humidity is a bit higher at 88%. For more details on January weather, check out Cardiff weather in January.

June and February present distinctly different weather patterns. In June, temperatures range from a minimum of 7°C (45°F) to a maximum of 27°C (82°F), with an average temperature of 15°C (60°F), making it considerably warmer than February, which sees temperatures between -4°C (26°F) and 15°C (60°F), averaging just 6°C (44°F). While June experiences moderate precipitation of 84 mm (3.3 in) over 12 days, February has higher rainfall at 101 mm (4.0 in) spread over 14 days. Additionally, February is slightly more humid at 88% compared to June's 80%. For more insights, you can check Cardiff weather in February.

In comparing the weather between March and June, it's clear that there is a significant shift as spring transitions into summer. In June, temperatures range from a minimum of 7°C (45°F) to a maximum of 27°C (82°F), with an average of 15°C (60°F), creating a much warmer environment. In contrast, March sees cooler temperatures, with a minimum of -5°C (22°F) and a maximum of 18°C (65°F), resulting in a significantly lower average of 7°C (45°F).

Precipitation levels are also noteworthy, with June experiencing 84 mm (3.3 in) of rain over 12 days, while March has a bit more precipitation at 97 mm (3.8 in) across 15 days. Humidity remains relatively high for both months, though slightly lower in June at 80% compared to 86% in March. For more detailed insights about weather patterns during this period, you can visit Cardiff weather in March.

When comparing the weather in June and April, we see a significant increase in temperatures. June boasts a minimum of 7°C (45°F) and an average of 15°C (60°F), peaking at 27°C (82°F), while April's temperatures range from a chilling -1°C (30°F) to a comfortable maximum of 20°C (69°F) with an average of 9°C (49°F). Precipitation is also higher in June, with 84 mm (3.3 in) occurring over 12 days compared to April’s 57 mm (2.2 in) over 10 days. Interestingly, humidity levels remain fairly consistent, with June at 80% and April slightly higher at 84%. For more details on April's weather, you can check Cardiff weather in April.

In comparison to May, June experiences a noticeable increase in average temperatures, rising from a minimum of 2°C (35°F) and an average of 12°C (54°F) in May to a minimum of 7°C (45°F) and an average of 15°C (60°F) in June. The maximum temperature also climbs, peaking at 27°C (82°F) in June compared to 24°C (76°F) in May. While both months see similar precipitation levels—79 mm (3.1 in) in May and 84 mm (3.3 in) in June—the rainfall is spread over the same number of days, with 12 rainy days in each month. Interestingly, humidity remains consistent at 80% for both months, creating a humid atmosphere throughout. For more details, you can check Cardiff weather in May.

When comparing the weather in June and July, we observe a slight increase in temperature and a decrease in humidity. June sees temperatures ranging from a minimum of 7°C (45°F) to a maximum of 27°C (82°F), with an average of 15°C (60°F) and 84 mm (3.3 in) of precipitation over 12 days. In contrast, July starts with a minimum temperature of 9°C (48°F) and reaches a maximum of 28°C (82°F), resulting in a higher average of 17°C (63°F), while precipitation remains similar at 85 mm (3.3 in) over the same number of days. Additionally, humidity decreases from 80% in June to 70% in July, making the latter month feel slightly more comfortable. You can find more details about the July weather in Cardiff by visiting Cardiff weather in July.

In June, the weather generally ranges from a minimum of 7°C (45°F) to a maximum of 27°C (82°F), with an average temperature of around 15°C (60°F). It experiences about 84 mm (3.3 in) of precipitation over 12 days, coupled with relatively high humidity levels of 80%. In contrast, August tends to be slightly warmer, featuring a minimum temperature of 9°C (48°F) and a maximum of 29°C (84°F), with an average temperature of 17°C (62°F). However, August also sees increased precipitation of 97 mm (3.8 in) over 13 days, yet the humidity is lower at 73%. For more detailed information, you can check Cardiff weather in August.

June and September share a similar average temperature of around 15°C (60°F), with maximum daytime highs peaking at 27°C (82°F) in both months. However, June typically experiences warmer minimum temperatures, averaging 7°C (45°F), while September cools down to a minimum of 4°C (40°F). Rainfall is quite comparable, with June receiving 84 mm (3.3 in) and September slightly less at 81 mm (3.2 in), both spread over approximately 12 days. Humidity levels are also similar, slightly favoring June at 80% compared to September’s 79%. For a detailed look at the weather pattern, you can check Cardiff weather in September.

June and October present quite different weather conditions. In June, temperatures range from a minimum of 7°C (45°F) to a pleasantly warm maximum of 27°C (82°F), with an average of 15°C (60°F). The month experiences about 84 mm (3.3 in) of precipitation over 12 days, and humidity levels hover around 80%. In contrast, October features cooler temperatures, with a minimum of 1°C (33°F) and a maximum of 21°C (70°F), averaging just 12°C (54°F). This month is wetter, accumulating 135 mm (5.3 in) of rain over 16 days and higher humidity at 89%. For more detailed information, you can check Cardiff weather in October.

June and November present distinctly different weather patterns. In June, temperatures range from a minimum of 7°C (45°F) to a maximum of 27°C (82°F), with an average of 15°C (60°F). This month experiences 84 mm (3.3 in) of precipitation over about 12 days, accompanied by a relatively comfortable humidity level of 80%. In contrast, November sees much cooler conditions, with temperatures varying from -1°C (30°F) to a high of 16°C (61°F) and an average of 9°C (48°F). The month is wetter, with 99 mm (3.9 in) of precipitation over 15 days and higher humidity at 90%. For a detailed look at November weather, you can check Cardiff weather in November.

June weather in Cardiff is characterized by mild to warm temperatures, with averages around 15°C (60°F) and maximum highs reaching up to 27°C (82°F). The month experiences about 84 mm (3.3 in) of precipitation over approximately 12 days, coupled with a humidity level of 80%, creating a comfortable atmosphere for outdoor activities. In contrast, December brings a stark change, with much colder temperatures that range from a minimum of -4°C (26°F) to an average of 7°C (45°F) and maximums peaking at only 13°C (56°F). This winter month sees increased precipitation of about 130 mm (5.1 in) across 17 days, along with higher humidity at 89%. For more detailed information, you can visit Cardiff weather in December.

Compare Cardiff's Climate with Cities Worldwide

Conclusion: What to Expect From June Weather in Cardiff

June in Cardiff marks a vibrant shift in weather as temperatures rise, offering a delightful contrast to the cooler preceding months. With maximum highs reaching a pleasant 27°C (82°F), this month brings a refreshing warmth, ideal for outdoor activities. While June does see an increase in precipitation, with about 12 days of rain contributing to a total of 84 mm, the overall humidity level tends to hover around 80%, creating a uniquely mild atmosphere. As the city thrives under longer daylight hours, residents and visitors alike can embrace the warmth and occasional showers that define June in Cardiff. For more insights into the region's climate throughout the year, explore Cardiff Climate.