April Weather in Merthyr Mawr, United Kingdom

Last updated: March 17, 2025

In April, Merthyr Mawr, United Kingdom experiences a dynamic mix of weather conditions, with maximum temperatures reaching up to 20°C (68°F) and an average of 9°C (49°F), making it a transitional month. However, the temperature can dip to a chilly minimum of -1°C (30°F), reminding residents of the lingering coolness of early spring. This month also brings significant precipitation, totaling 56 mm (2.2 in) across 10 days, contributing to the lush greenery that the area is known for. With a relative humidity of 84%, the air can often feel damp, enhancing the vibrant atmosphere of the quaint village. Visitors can expect a refreshing blend of spring weather, ideal for exploration and outdoor activities, provided they're ready for the occasional shower.

April Temperature in Merthyr Mawr

In April, temperatures in Merthyr Mawr begin to hint at the warmth of spring, marked by a minimum of -1°C (30°F) and a maximum reaching 20°C (68°F). This month sees an average daily temperature climb to 9°C (49°F), a noticeable increase from earlier months. The trend of rising temperatures reflects a transition from the chill of winter, with March's cooler air giving way to the fresh vitality of April. As the month progresses, the increasing warmth is complemented by longer daylight hours, inviting both locals and travelers to enjoy the blooming landscapes. With such gradual ascension in temperatures, April stands as a delightful prelude to the warmer days of summer ahead.

April Weather in Merthyr Mawr: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Merthyr Mawr, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec434345495459636258544845
Data source: Temperature data for Merthyr Mawr 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.

April Precipitation in Merthyr Mawr

In April, Merthyr Mawr experiences a notable decrease in precipitation, with only 56 mm (2.2 inches) of rain over 10 days. This dip comes after a wetter March, which recorded 101 mm (4.0 inches) across 17 days. The more moderate rainfall in April signals a transition into the drier months, as the region prepares for May's return to increased precipitation at 80 mm (3.2 inches). This pattern reflects a trend of spring weather gradually becoming milder, providing a brief respite before the onset of the wetter summer months, where rainfall often peaks in August and October. The shift in rainfall distribution is essential for local ecosystems and agriculture, allowing flora and fauna to adapt to the changing conditions.

April Precipitation Trends in Merthyr Mawr

The chart displays monthly precipitation patterns in Merthyr Mawr, with values for each month alongside April's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec831111015780858610693146111144
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Merthyr Mawr

In April, humidity in Merthyr Mawr, United Kingdom, typically hovers around 84%, marking a noticeable decrease from the winter months when levels peaked at 88% in both January and February. This gradual decline reflects the transition into spring, as temperatures begin to rise and the air becomes more comfortable. Following April, the trend continues with May and June seeing even lower humidity levels at 80%, suggesting a shift towards drier conditions. Overall, April serves as a pivotal point in the yearly humidity cycle, bridging the dampness of early winter with the lighter, warmer air of summer, ultimately paving the way for the increasingly pleasant months ahead.

April Average Humidity in Merthyr Mawr

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

April UV Index in Merthyr Mawr

As April arrives in Merthyr Mawr, the UV Index sees a notable rise to 6, entering the high exposure category. This increase indicates that, with a burn time of just 25 minutes, sun protection becomes essential for outdoor activities. Compared to the preceding months, where the UV levels were moderate or low, April serves as a clear indicator of the approaching summer, encouraging residents and visitors alike to start prioritizing sun safety. With May following closely with an even higher UV Index of 7, it's vital to stay informed about the changing UV landscape. For more details, visit Merthyr Mawr UV Index.

Maximum UV Index Levels in Merthyr Mawr for April

The chart shows the monthly maximum UV Index (UVI) for Merthyr Mawr in April, 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: Merthyr Mawr April 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.

April Sunshine in Merthyr Mawr

April marks a vibrant turning point in Merthyr Mawr, as the sun graces the region with an impressive 320 hours of sunshine—a significant surge from the 205 hours recorded in March. This leap is part of a broader trend as spring unfolds, setting the stage for even sunnier months ahead. Following April, May takes the lead with 393 hours, tantalizing residents with the promise of longer, brighter days. As summer approaches, the sunlight peaks in July at 410 hours, creating an inviting backdrop for outdoor activities. The gradual decline in sunshine hours toward the end of the year, falling to 128 hours in November and then 104 in December, serves as a gentle reminder of the seasonal cycles, accentuating the warmth and joy that April and the subsequent months bring.

Monthly Sunshine Duration in Merthyr Mawr: April Highlighted

The April sunshine duration represents the total number of hours Merthyr Mawr experiences direct sunlight during the month of April, excluding cloudy or obstructed periods. This chart compares the sunshine duration of April with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec87h142h205h320h393h373h410h362h296h233h128h104h
Data source: Merthyr Mawr April Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Merthyr Mawr During April

In Merthyr Mawr, the likelihood of sunny weather experiences a notable leap in April, reaching an impressive 54%, making it one of the sunniest months of the year. This upward trend is particularly striking when compared to the preceding months; for instance, the chance of sunshine sits at only 30% in March. As spring unfolds, April distinctly outshines the earlier months, surpassing February and January's modest percentages of 23% and 22%, respectively. However, this sunny optimism takes a slight dip in May with a 33% chance of sun, illustrating that while April marks a transition into more favorable weather, the variability of British skies remains ever-present.

Percentage of Sunny Days in April in Merthyr Mawr

The chart illustrates the percentage of sunny days in Merthyr Mawr throughout the year, with April 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 Merthyr Mawr experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec22%23%30%54%33%27%41%32%28%21%30%20%
Data source: Merthyr Mawr April chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Merthyr Mawr in April

As spring unfolds in Merthyr Mawr, April shines brightly with an impressive 13 hours of daylight, marking a significant leap from March’s 11 hours. This month embodies the transition into longer days, paving the way for May's generous 15 hours of light and hinting at the sun-drenched summer months ahead. The gradual increase in daylight hours from January's 8 hours to April's 13 not only brings warmth but also energizes the vibrant landscape, inviting residents and visitors alike to bask in the lengthening days. As the year progresses, this upward trend will peak in June and July, creating an idyllic atmosphere for outdoor adventures and community gatherings.

Average Daylight Hours in Merthyr Mawr for April

The chart illustrates the variation in daylight duration in Merthyr Mawr throughout the year, with April highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 23m9h 58m11h 55m13h 54m15h 39m16h 33m16h 4m14h 30m12h 35m10h 36m8h 49m7h 52m
Data source: Merthyr Mawr daylight hours, calculated by summing the hours between sunrise and sunset for each day.

April Winds in Merthyr Mawr

In April, Merthyr Mawr experiences a gentle shift in its average wind speed, dropping to 3.9 m/s (9 mph). This is a noticeable contrast to earlier months like January (5.3 m/s) and February (6.0 m/s), which often deliver brisker breezes. The milder winds of April herald the arrival of spring, as nature begins to awaken with a whisper rather than a gust. Looking ahead, the trend suggests a gradual increase towards summer, with May and June offering slightly more robust winds, yet nothing compared to the strongest months of winter. Overall, April's serene conditions invite a sense of calm, making it an ideal time to enjoy the burgeoning beauty of the landscape.

Average April Wind Speed in Merthyr Mawr

The chart displays monthly wind speed patterns in Merthyr Mawr, with values for each month shown alongside April's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how April's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec5.36.05.13.9 m/s4.93.63.54.43.85.14.45.7
Data source: Merthyr Mawr April wind data, generated using information from the Copernicus Climate Change Service.

How April Weather in Merthyr Mawr Compares to Other Months

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

April generally experiences milder temperatures compared to January, with an average of 9°C (49°F) and a maximum of 20°C (68°F), whereas January's average is a cooler 6°C (43°F) with a maximum of 13°C (56°F). Additionally, April sees slightly less precipitation at 56 mm (2.2 in) over 10 days compared to January's 83 mm (3.3 in) over 12 days, indicating a wetter January. Despite January's cooler temperatures, both months have high humidity levels, with January at 88% and April at 84%. For a detailed look at January weather conditions, you can visit Merthyr Mawr weather in January.

In comparing the weather between February and April, we see a notable shift towards warmer temperatures and decreased precipitation. April boasts an average temperature of 9°C (49°F) compared to February's cooler 6°C (44°F), with maximums reaching 20°C (68°F) in April, while February peaks at 15°C (59°F). Additionally, April experiences significantly less rainfall, accumulating 56 mm (2.2 in) over 10 days, in contrast to February's heftier 111 mm (4.4 in) spread over 15 days. Humidity levels are slightly lower in April at 84%, compared to 88% in February. For those interested in specific weather conditions in February, you can find more detailed information here: Merthyr Mawr weather in February.

In comparing the weather of April and March, April brings slightly warmer temperatures, with averages around 9°C (49°F) and a maximum reaching 20°C (68°F), while March tends to be cooler, averaging 7°C (45°F) and peaking at 18°C (64°F). Precipitation levels are notably reduced in April, with 56 mm (2.2 in) over 10 days, compared to March's heavier rainfall of 101 mm (4.0 in) across 17 days. Both months exhibit high humidity, though April is slightly less humid at 84% compared to March's 86%. For more detailed insights, you can check Merthyr Mawr weather in March.

April and May present a noticeable shift in weather conditions. In April, temperatures typically range from a low of -1°C (30°F) to a high of 20°C (68°F), with an average of 9°C (49°F). The month experiences around 56 mm (2.2 in) of precipitation over approximately 10 days, contributing to a high humidity level of 84%. By contrast, May sees a warming trend, with minimum temperatures at 2°C (36°F) and maximums reaching 24°C (75°F), averaging 12°C (54°F). However, the month is slightly wetter, with 80 mm (3.2 in) of precipitation spread over 12 days, and a decrease in humidity to 80%. For more details on May weather in the area, you can check out Merthyr Mawr weather in May.

April and June present quite different weather patterns. In April, temperatures range from a chilly -1°C (30°F) at night to a mild 20°C (68°F) during the day, with an average of 9°C (49°F). The month experiences around 56 mm (2.2 in) of precipitation over approximately 10 days, and humidity levels are relatively high at 84%. In contrast, June offers much warmer conditions, with minimum temperatures of 7°C (45°F) and daytime highs reaching 27°C (81°F), resulting in an average temperature of 15°C (60°F). Although June sees increased precipitation of 85 mm (3.3 in) over about 13 days, humidity remains slightly lower at 80%. For a more detailed look at June weather, check out Merthyr Mawr weather in June.

April and July offer distinct weather contrasts in Merthyr Mawr. In April, temperatures are cooler with a minimum of -1°C (30°F) and an average of 9°C (49°F), while July enjoys warmer days, featuring a minimum of 9°C (48°F) and an average of 17°C (63°F). Precipitation also varies, with April receiving 56 mm (2.2 in) over 10 days compared to July's 86 mm (3.4 in) across 12 days. Humidity tends to be higher in April at 84%, while July's humidity is more comfortable at 70%. For a detailed view of July weather, you can check this link: Merthyr Mawr weather in July.

April typically experiences cooler temperatures compared to August, with minimums reaching as low as -1°C (30°F) and average highs around 20°C (68°F), while August sees a warmer range, with minimums of 9°C (48°F) and maximums peaking at 28°C (82°F). Precipitation is more frequent in August, occurring on 16 days and accumulating 106 mm (4.2 in) compared to April's 56 mm (2.2 in) over 10 days. Additionally, April tends to be more humid, with an average humidity of 84%, while August's humidity averages 73%. For more details about the weather conditions, you can check Merthyr Mawr weather in August.

April and September present distinct weather patterns that reflect the transition from early spring to early autumn. In April, temperatures range from a chilly minimum of -1°C (30°F) to a pleasant maximum of 20°C (68°F), with an average of 9°C (49°F). The month experiences around 56 mm (2.2 in) of precipitation over approximately 10 days, contributing to a high humidity level of 84%.

In contrast, September boasts warmer temperatures, with minimums around 5°C (41°F) and maximums reaching up to 27°C (80°F), averaging 15°C (59°F). This month is characterized by slightly more precipitation, totaling 92 mm (3.6 in) over about 12 days, but the humidity is lower at 79%. For a more detailed look at what the weather has to offer, check out Merthyr Mawr weather in September.

April and October present distinct weather characteristics, with both months exhibiting fluctuating temperatures and varying levels of precipitation. In April, temperatures range from a chilly -1°C (30°F) at night to a pleasant 20°C (68°F) during the day, accompanied by an average of 56 mm (2.2 in) of rain spread over 10 days. The humidity is relatively high at 84%, contributing to a fresh spring atmosphere. In contrast, October sees slightly milder temperatures, with a minimum of 1°C (33°F) and a maximum of 21°C (70°F), along with increased rainfall of 146 mm (5.7 in) over 17 days, and a higher humidity level of 89%. This makes October notably wetter and more humid compared to April. For more details on October weather, you can visit Merthyr Mawr weather in October.

April and November present distinct weather profiles despite having similar minimum and average temperatures. In April, the temperature range reaches a comfortable maximum of 20°C (68°F), accompanied by a lower precipitation level of 56 mm (2.2 in) over about 10 days, making it a relatively drier month. In contrast, November experiences cooler maximum temperatures, peaking at 16°C (60°F), and is significantly wetter, with 111 mm (4.4 in) of precipitation spread across 16 days. Additionally, the humidity levels rise slightly in November to 90%, compared to 84% in April, contributing to a more damp and overcast feel. For more detailed information, you can check Merthyr Mawr weather in November.

April and December present notably different weather conditions. In April, temperatures range from a minimum of -1°C (30°F) to a maximum of 20°C (68°F), with an average temperature of 9°C (49°F). The month sees about 56 mm (2.2 in) of precipitation spread over 10 days, accompanied by moderate humidity levels around 84%. In contrast, December experiences cooler temperatures, with a minimum of -2°C (29°F) and a maximum of 13°C (55°F), yielding an average of 7°C (45°F). Precipitation significantly increases to 144 mm (5.7 in) over 18 days, and humidity also rises to 89%. For those interested in more detailed December weather information, check out Merthyr Mawr weather in December.

Compare Merthyr Mawr's Climate with Cities Worldwide

Conclusion: What to Expect From April Weather in Merthyr Mawr

April at Merthyr Mawr brings a refreshing shift as the landscape shakes off the winter chill, showcasing a notable rise in temperatures compared to the colder months. With average highs of 20°C and lows rarely dipping below -1°C, the month provides a pleasant balance of warmth and coolness. However, this transition also comes with increased humidity and precipitation, making April somewhat variable with about 10 days of rain. This blend of conditions creates a vibrant atmosphere where spring truly comes alive. Discover more about the unique weather patterns throughout the year by visiting Merthyr Mawr Climate.