April Weather in Idrija, Slovenia

Last updated: August 27, 2025

In April, Idrija, Slovenia experiences a dynamic shift in weather as spring unfolds. With maximum temperatures reaching a pleasant 25°C (78°F) and an average of 10°C (50°F), the month showcases a blend of warmth and cooler days. However, the late spring chill can also bring minimum temperatures plummeting to -9°C (16°F). Rainfall is not uncommon, with 137 mm (5.4 in) of precipitation spread over 12 days, contributing to the lush landscape that Idrija is renowned for. This month also sees humidity levels hovering around 73%, adding to the vibrant, refreshing atmosphere of this charming Slovenian town.

April Temperature in Idrija

As April arrives in Idrija, Slovenia, temperatures begin to reflect the welcome transition to spring. With minimums around -9°C (16°F) and average highs peaking at 25°C (78°F), this month showcases a remarkable warming trend compared to the colder winter months. Daytime temperatures are notably milder, averaging 10°C (50°F), creating a refreshing atmosphere perfect for outdoor explorations. The shift from the frost of March, which featured lower minimums and averages, signals a rebirth of nature, inviting locals and visitors alike to witness the vibrant scenery as it awakens from the winter slumber. April in Idrija is not just about rising temperatures; it's an invitation to enjoy longer days filled with the promise of growth and renewal.

April Weather in Idrija: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Idrija, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Idrija, April typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec343842505767696960524336
Data source: Temperature data for Idrija 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 Idrija

April in Idrija, Slovenia, marks a notable shift in the weather patterns as rainfall peaks with 137 mm (5.4 in) of precipitation over 12 days. This increase reflects the arrival of spring, characterized by more frequent showers compared to the previous months, which averaged around 3-11 rainy days. The transition from March to April sees not only heightened precipitation but also a steady climb in rainfall amounts, emphasizing a growing trend towards wetter conditions as the season progresses. Following April, May dramatically escalates with 223 mm (8.8 in) over 21 days, highlighting how the momentum of spring often culminates in a lush and vibrant landscape in this picturesque region.

April Precipitation Trends in Idrija

The chart displays monthly precipitation patterns in Idrija, 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. In Idrija, April typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec70132103137223128137131194134193169
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Idrija

In April, Idrija, Slovenia, experiences a notable consistency in humidity, holding steady at 73%, similar to the previous month of March. This slight moderation from the high levels seen earlier in winter, where humidity peaked at 88% in January, indicates a gradual transition toward drier months ahead. As spring progresses into May, humidity dips further to 70%, suggesting a trend of decreasing moisture that continues through the summer. Overall, April serves as a pivotal month where the crispness of spring begins to blend with the warmth of approaching summer, heralding a refreshing shift in the region’s atmospheric conditions.

April Average Humidity in Idrija

This chart illustrates the average monthly humidity levels in Idrija, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Idrija is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%82%73%73%70%69%63%51%64%83%89%88%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Idrija

As April unfolds in Idrija, Slovenia, the UV Index experiences a noticeable increase, reaching a moderate level of 6. This shift to a high exposure category signifies a change from the milder winter months, with a burn time now reduced to just 25 minutes. The trend indicates that as spring progresses, sun intensity strengthens, paving the way for more caution during outdoor activities. With May just around the corner, the UV Index will soar to an even more intense 8, highlighting the importance of sun protection as the days grow longer and sunnier. To stay informed about the UV Index and plan your outdoor adventures safely, visit Idrija UV Index.

Maximum UV Index Levels in Idrija for April

The chart shows the monthly maximum UV Index (UVI) for Idrija 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. In April, the maximum UV index in Idrija typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689987532
Data source: Idrija 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 Idrija

As April unfolds in Idrija, Slovenia, the promise of spring is evident not only in the blossoming landscapes but also in the dramatic increase in sunshine hours. After the cold grip of winter, which offered just 180 hours in January, the daylight gradually enhances, culminating in April's impressive 336 hours. This upward trend from March's 307 hours signifies a joyful arrival of brighter days, laying the groundwork for May's peak of 360 hours. Each month builds upon the last, as nature awakens and the sun becomes a more prominent figure, mapping out a clear path toward the long, sun-soaked afternoons of summer. With each hour gained, Idrija steps further into a vibrant season, inviting both residents and visitors alike to bask in the warmth and beauty of its unfolding spring.

Monthly Sunshine Duration in Idrija: April Highlighted

The April sunshine duration represents the total number of hours Idrija 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.
JanFebMarAprMayJunJulAugSepOctNovDec180h222h307h336h360h409h426h392h317h282h215h206h
Data source: Idrija April Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Idrija During April

In Idrija, Slovenia, the likelihood of sunny weather begins to fluctuate noticeably as spring unfolds. With March offering a promising 56% chance of sunshine, April sees a dip to 34%, which is a bit disappointing as the weather begins to transition from the briskness of winter. However, this slight decline in April's sunny days is somewhat typical, as it sits between the more hopeful March and the more variable May, which recovers slightly to 31%. Following this pattern, the likelihood of sunny weather is on the rise again through the summer months, providing a tantalizing glimpse of sunnier days ahead after the April showers. Overall, while April may not be the sunniest month, it still plays a crucial role in the gradual warming trend that leads into the vibrant, sunshine-filled days of summer.

Percentage of Sunny Days in April in Idrija

The chart illustrates the percentage of sunny days in Idrija 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 Idrija experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec25%37%56%34%32%49%45%45%50%38%29%33%
Data source: Idrija April chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Idrija in April

In Idrija, Slovenia, April marks a vibrant shift in daylight duration, with the sun gracing the skies for an invigorating 13 hours. This increase from March's 11 hours heralds the approach of spring, as longer days give way to blossoming nature and a rejuvenated outdoor spirit. The trend continues upward, with May boasting an even richer 14 hours, setting the stage for the peak summer months. As winter recedes and sunlight fills the air, residents and visitors alike can revel in the warming embrace of longer days, a testament to the seasonal transformations inherent in Idrija's climate. This gradual increase not only brightens the surroundings but also uplifts the community's mood, signaling the joyous arrival of sunny escapades and outdoor adventures.

Average Daylight Hours in Idrija for April

The chart illustrates the variation in daylight duration in Idrija throughout the year, with April highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 5m10h 20m11h 56m13h 34m14h 58m15h 40m15h 18m14h 3m12h 29m10h 52m9h 26m8h 41m
Data source: Idrija daylight hours, calculated by summing the hours between sunrise and sunset for each day.

April Winds in Idrija

April in Idrija, Slovenia, ushers in a gentle breeze marked by an average wind speed of 2.0 m/s (4 mph). This slight uptick from the preceding months reflects the gradual transition into the more vibrant spring season, where winds remain soft yet invigorating. Notably, April's wind speed is consistent with the annual pattern of modest fluctuations, peaking slightly higher than the calmness of January, February, and March. After April, the wind begins to taper off in the summer months, such as June and July, suggesting that while spring breathes life into the air, summer tends to bring a more tranquil atmosphere to this picturesque region. As the year progresses, the winds pick up again in autumn, reaffirming the cyclical nature of Idrija's climate.

Average April Wind Speed in Idrija

The chart displays monthly wind speed patterns in Idrija, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.92.11.92.0 m/s1.91.61.71.71.72.42.21.7
Data source: Idrija April wind data, generated using information from the Copernicus Climate Change Service.

How April Weather in Idrija Compares to Other Months

Weather in Idrija varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Idrija, focusing on differences in temperature, rainfall, humidity, and UV levels.

In comparing the weather of April and January, April typically brings milder temperatures and increased variability, with lows around -9°C (16°F) and highs reaching up to 25°C (78°F), resulting in an average of 10°C (50°F). This month also sees significant precipitation, accumulating to 137 mm (5.4 in) over about 12 days, accompanied by a humidity level of 73%. In contrast, January features much colder temperatures, with a minimum of -12°C (11°F) and a maximum of just 10°C (51°F), leading to a much lower average of 1°C (34°F). Precipitation is also less in January, totaling 70 mm (2.8 in) across 7 days, but the humidity is higher at 88%. For more details on January weather, you can check Idrija weather in January.

April weather is generally milder than February, featuring a wider temperature range with a minimum of -9°C (16°F) and a pleasant average of 10°C (50°F), peaking at a warm 25°C (78°F). In contrast, February tends to be colder, with temperatures dropping to a minimum of -12°C (12°F) and an average of only 3°C (38°F), though it reaches a maximum of 19°C (66°F). Precipitation levels are similar, with April receiving 137 mm (5.4 in) across 12 days, while February records 132 mm (5.2 in) over 11 days. Furthermore, April has a slightly lower humidity level at 73%, compared to February's higher humidity of 82%. For a more detailed comparison, you can explore Idrija weather in February.

In comparing the weather of April and March, it’s clear that April generally experiences milder temperatures and increased warmth. April's minimum temperature of -9°C (16°F) and maximum of 25°C (78°F) offer a significant improvement over March's lower minimum of -17°C (2°F) and maximum of 21°C (71°F). The average temperature in April rises to 10°C (50°F), compared to March's 6°C (42°F). Additionally, April sees slightly more rainfall with 137 mm (5.4 in) over 12 days, compared to March's 103 mm (4.1 in) over 11 days. Despite the increased precipitation, both months have the same humidity level at 73%. For more detailed insights on March weather, visit Idrija weather in March.

April and May exhibit noticeable differences in weather patterns. April experiences a broader temperature range with minimums dropping to -9°C (16°F) and average temperatures around 10°C (50°F), while May's temperatures are milder, with a minimum of 1°C (35°F) and an average of 14°C (57°F). Both months see maximum temperatures reaching similar highs, with April peaking at 25°C (78°F) and May slightly higher at 26°C (79°F). However, May is significantly wetter, with precipitation totaling 223 mm (8.8 in) over 21 days, compared to April's 137 mm (5.4 in) over 12 days. Humidity levels are relatively consistent, with April at 73% and May slightly lower at 70%. For a detailed look into May weather specifics, you can refer to Idrija weather in May.

April and June present distinctly different weather experiences. In April, temperatures can range from a chilly -9°C (16°F) at night to a mild 25°C (78°F) during the day, with an average temperature of 10°C (50°F). The month sees significant precipitation of 137 mm (5.4 in) over approximately 12 days, contributing to a humidity level of 73%. In contrast, June offers a much warmer climate, with minimum temperatures of 6°C (43°F), peaking at 35°C (95°F) and averaging 19°C (67°F). The precipitation in June is slightly lower at 128 mm (5.0 in) over the same number of rainy days, and humidity dips to 69%. For a more detailed overview of what to expect, check out Idrija weather in June.

April and July present distinctly different weather patterns. In April, temperatures range from a chilly minimum of -9°C (16°F) to a pleasant average of 10°C (50°F) and can reach a maximum of 25°C (78°F). This month experiences significant precipitation, with 137 mm (5.4 in) falling over 12 days, contributing to a higher humidity level of 73%. In contrast, July is much warmer, with temperatures starting at a minimum of 10°C (50°F), averaging 20°C (68°F), and peaking at 33°C (93°F). While July also sees the same total precipitation of 137 mm (5.4 in), it occurs over 16 days, leading to a lower humidity level of 63%. For more details on the weather during this month, you can visit Idrija weather in July.

April and August weather in Idrija can be quite contrasting. In April, temperatures fluctuate significantly, with lows reaching -9°C (16°F) and highs peaking at 25°C (78°F), resulting in a mild average of 10°C (50°F). The month experiences considerable precipitation, totaling 137 mm (5.4 in) over 12 days, combined with a relatively high humidity of 73%. In contrast, August brings warmer conditions, with minimum temperatures of 9°C (48°F) and maximums soaring to 34°C (93°F), averaging 21°C (69°F). While precipitation is slightly lower at 131 mm (5.2 in) across 15 days, humidity drops to a more comfortable 51%. For more insights on August weather, you can refer to Idrija weather in August.

April and September present contrasting weather patterns. In April, temperatures can swing from a chilly -9°C (16°F) at night to a warm 25°C (78°F) during the day, with an average temperature of around 10°C (50°F). The month sees considerable precipitation, totaling 137 mm (5.4 in) over 12 days, contributing to a relatively high humidity of 73%.

In contrast, September offers milder temperatures, ranging from a low of 2°C (36°F) to a pleasant high of 29°C (85°F), with an average of 16°C (60°F). While precipitation increases slightly to 194 mm (7.6 in) across 13 days, the humidity drops to 64%, creating a more comfortable atmosphere. For a closer look at September weather specifics, check out Idrija weather in September.

April and October weather exhibits notable similarities and differences. In April, temperatures range from a chilly -9°C (16°F) to a pleasant 25°C (78°F), with an average of 10°C (50°F). The month experiences significant rainfall, totaling 137 mm (5.4 in) across about 12 days, coupled with a humidity level of 73%. In contrast, October has a milder temperature spectrum, with a minimum of 0°C (33°F) and a maximum of 23°C (73°F), leading to an average of 11°C (52°F). The precipitation is slightly lower at 134 mm (5.3 in) over 11 days, but humidity increases to 83%. For a more detailed look at October conditions, visit Idrija weather in October.

In comparing the weather of April and November, April tends to be slightly milder, with average temperatures reaching 10°C (50°F) and a maximum of 25°C (78°F), although it can also experience colder temperatures as low as -9°C (16°F). In contrast, November offers cooler conditions, with an average temperature of 6°C (44°F) and a maximum of 18°C (64°F), as well as a nearly consistent chill with minimum temperatures around -6°C (22°F). Precipitation is more frequent in November, totaling 193 mm (7.6 in) over 13 days, compared to April's 137 mm (5.4 in) over 12 days. Additionally, November is characterized by higher humidity levels at 89%, compared to April's 73%. For more specific information on weather patterns in November, you can visit Idrija weather in November.

April and December present contrasting weather patterns. In April, temperatures range from a minimum of -9°C (16°F) to a comfortable maximum of 25°C (78°F), with an average temperature of 10°C (50°F). Precipitation in April totals 137 mm (5.4 in) over 12 days, while humidity sits at 73%. In contrast, December experiences colder temperatures, with a minimum of -11°C (13°F) and a maximum of 12°C (55°F), yielding an average of just 2°C (36°F). This month sees slightly higher precipitation at 169 mm (6.7 in) over 11 days, coupled with increased humidity of 88%. For more specifics on December weather conditions, you can refer to Idrija weather in December.

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Conclusion: What to Expect From April Weather in Idrija

As April arrives in Idrija, the weather exhibits a remarkable transition, showcasing mild temperatures that peak around 25°C (78°F) yet also dip to chilling lows of -9°C (16°F). This month is characterized by an average temperature of 10°C (50°F), offering a refreshing charm distinct from the harsher winter months. While precipitation is frequent, with about 137 mm (5.4 in) of rain over approximately 12 days, this moisture nurtures the budding flora and invigorates the landscape. With a relative humidity of 73%, April heralds a vibrant awakening from the dry spells of winter, providing both challenges and beauty that are unique to this time of year. To explore more about the weather patterns, visit Idrija Climate.