Ilirska Bistrica Climate

Last updated: January 18, 2025

Ilirska Bistrica, Slovenia, experiences a Cfb climate classification, characterized by its temperate maritime conditions. This region showcases a remarkable temperature range, with winter lows plummeting to a frigid -14°C (7°F) in March, while summer peaks can soar to a scorching 35°C (95°F) in June. The annual average temperature stands at a mild 11°C (53°F), underscoring the area's transitional climate, which contributes to vibrant seasonal variations and diverse ecological landscapes.

Ilirska Bistrica temperature by month

Ilirska Bistrica, Slovenia, exhibits distinct seasonal temperature trends, beginning with cold winters where January and March see minimums dropping to -14°C (8°F) and -14°C (7°F), respectively. As spring approaches, conditions gradually warm, with average temperatures rising from 1°C (34°F) in January to a pleasant 10°C (51°F) in April. May signals the onset of warmer weather, showcasing a mix of mild nights and daytime highs reaching 26°C (79°F). The summer months of June, July, and August feature peak temperatures, with June hitting a maximum of 35°C (95°F), while average temperatures hover around 20°C (68°F) to 21°C (71°F). As autumn sets in, temperatures decrease, evidenced by September’s mild averages of 16°C (62°F), transitioning into the cooler months of October and November, which see average highs tapering to 12°C (53°F) and 7°C (45°F), respectively. The year concludes with the chill of December, where minimums dip to around -8°C (18°F), encapsulating the cyclical nature of Ilirska Bistrica's climate.

Monthly Temperatures in Ilirska Bistrica, Slovenia

The chart illustrates Ilirska Bistrica's temperature patterns throughout the year, with values aggregated from various locations across the region. It highlights seasonal variations and temperature changes across the months.
JanFebMarAprMayJunJulAugSepOctNovDec343943505868707061534537
Data source: Ilirska Bistrica temperature data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

Ilirska Bistrica, Dolnji Zemon, and Podgrad all experience a temperature range from a minimum of -14°C (7°F) in March to a maximum of 35°C (95°F) in June. For detailed monthly temperatures in these regions, you can explore the following links: monthly temperatures in Ilirska Bistrica, monthly temperatures in Dolnji Zemon, and monthly temperatures in Podgrad.

Precipitation Patterns in Ilirska Bistrica

Ilirska Bistrica, Slovenia, experiences a distinctive precipitation pattern throughout the year, with January receiving 91 mm (3.6 in) of rain over an average of 8 days, marking the driest month. February is notably wetter, as precipitation escalates to 175 mm (6.9 in) over 13 days, hinting at the transition towards spring. The spring months of March and April see moderate rainfall, with March recording 128 mm (5.0 in) and April slightly increasing to 136 mm (5.4 in). The peak of precipitation occurs in May, reaching 214 mm (8.4 in) over 21 days, illustrating the onset of a wet season that sustains the region’s lush landscapes.

As summer unfolds, rainfall begins to stabilize, with June, July, and August featuring relatively lower totals of 110 mm (4.3 in), 117 mm (4.6 in), and 120 mm (4.7 in), respectively. However, the transition to autumn and winter brings a return to heavier precipitation, as September records the highest monthly total of 219 mm (8.6 in), followed closely by November and December with 217 mm (8.5 in) and 205 mm (8.1 in) respectively. This seasonal shift is characterized by frequent rainy days, particularly in the latter months, enhancing the region's lush greenery and contributing to its vibrant climate.

Monthly Average Precipitation in Ilirska Bistrica, Slovenia

The average monthly precipitation in Ilirska Bistrica, providing insights into seasonal rainfall patterns and the region's precipitation trends throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec91175128136214110117120219170217205
Data source: Ilirska Bistrica precipitation data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.
Choose your preferred precipitation unit

Sunshine Duration in Ilirska Bistrica

Ilirska Bistrica, Slovenia, showcases an interesting progression of sunshine duration throughout the year, reflecting the region's distinct seasonal changes. The year begins with 179 hours of sunshine in January, gradually increasing to 224 hours in February. This upward trend continues into spring, where March experiences a notable leap to 313 hours, followed by 337 hours in April, and reaches 365 hours in May. This steady escalation not only signifies the arrival of warmer weather but also highlights the burgeoning daylight that accompanies the transition from winter to spring.

As summer arrives, Ilirska Bistrica enjoys its sunniest months, with June basking in 413 hours and July peaking at an impressive 429 hours of sunshine, making it the sunniest month of the year. Even August maintains a robust 397 hours, ensuring a rich summer experience before the gradual decline into autumn. September’s sunshine duration drops to 322 hours, followed by a further decline to 295 hours in October, and tapering down to 222 hours in November. Notably, December experiences 211 hours, marking the return to shorter days and less sunlight. The overall pattern vividly illustrates the region's vibrant summer months contrasted with the subdued light of winter, contributing to Ilirska Bistrica's dynamic seasonal climate.

Monthly Sunshine in Ilirska Bistrica, Slovenia

Monthly sunshine duration represents the total hours of direct sunlight Ilirska Bistrica receives each month, excluding periods when the sun is obscured by clouds or other obstructions.
JanFebMarAprMayJunJulAugSepOctNovDec179h224h313h337h365h413h429h397h322h295h222h211h
Data source: Ilirska Bistrica sunshine duration data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.

Ilirska Bistrica UV Index Trends

The UV Index in Ilirska Bistrica, Slovenia, exhibits distinct seasonal variations, reflecting the changes in sunlight exposure throughout the year. Starting in January, the UV Index is relatively low at 2, indicating minimal risk for sunburn with a burn time of 45 minutes. As winter transitions to spring, the index increases, reaching 3 in February and 5 in March, categorizing the exposure as moderate. By April, the UV Index jumps to 7, indicating high exposure levels, and necessitating increased sun protection, particularly as individuals can expect a burn time of only 25 minutes.

Summer months in Ilirska Bistrica present the highest UV Index readings, with June and July peaking at 9, classified as very high, requiring heightened precautions against sunburn, with a minimal burn time of just 15 minutes. August follows closely behind with an index of 8, maintaining the need for protective measures. As autumn arrives, the UV Index gradually declines to 7 in September and drops further to 5 in October. By November, the category returns to moderate levels with a UV Index of 3, and December concludes the year with a low index of 2, illustrating the cyclical nature of solar exposure in the region and the importance of seasonal sun safety measures.

Monthly Maximum UV Index for Ilirska Bistrica, Slovenia

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Ilirska Bistrica. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec235789987532
Data source: Ilirska Bistrica UV Index data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.

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.

Daylight Hours in Ilirska Bistrica

In Ilirska Bistrica, Slovenia, daylight duration demonstrates significant seasonal variability, reflective of the region's temperate climate. Beginning in January, daylight lasts about 9 hours, with a gradual increase as spring approaches. By February, this extends to 10 hours, and further increases to 11 hours in March. April marks a noticeable shift, with 13 hours of daylight, effectively heralding the arrival of longer days as the region transitions into the warmer months, culminating in May's 14 hours of daylight.

The height of summer in Ilirska Bistrica occurs in June and July, where the daylight peaks at 15 hours, providing ample opportunities for outdoor activities and exploration. As summer wanes, daylight hours start to decrease, with August featuring 14 hours, followed by a drop to 12 hours in September. October and November see a further reduction, with daylight available for only 10 hours and 9 hours, respectively. By December, daylight is at its lowest, recorded at just 8 hours, emphasizing the region's cyclical nature of light throughout the year, which significantly influences local lifestyle and activities.

Average Monthly Daylight Hours in Ilirska Bistrica, Slovenia

This chart shows the total daylight hours Ilirska Bistrica receives each month, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec549h623h716h812h893h935h913h840h749h653h569h526h
Data source: Ilirska Bistrica daylight hours, calculated based on aggregated data for various regional locations, determined by the times between sunrise and sunset.

Climate Highlights of Ilirska Bistrica's Popular Destinations

The climate in Dolnji Zemon, Slovenia, is characterized by cold winters and warm summers. January sees temperatures ranging from -14°C to 12°C, with significant precipitation peaking in May at 214 mm. The region experiences ample sunshine, especially in the summer months, with July recording up to 429 hours of sunlight. Overall, the area enjoys a well-defined seasonal variation, making it suitable for various outdoor activities year-round. For more detailed information, visit Dolnji Zemon climate.

Ilirska Bistrica experiences a continental climate characterized by cold winters and warm summers. January sees temperatures ranging from -14°C to 12°C with significant precipitation peaking in May at 214 mm and September at 219 mm. Sunshine increases from 179 hours in January to a high of 429 hours in July, providing a pleasant summer atmosphere. The transitional months of spring and autumn bring moderate temperatures and varying rainfall, making it an interesting locale for seasonal weather. For more detailed information, visit Ilirska Bistrica climate.

Podgrad, Slovenia experiences a continental climate with cold winters and warm summers. January temperatures range from a minimum of -14°C to a maximum of 12°C, while July sees milder conditions with averages around 21°C. Precipitation is highest in May and September, reaching up to 214 mm, with the sunniest months being June and July, enjoying over 400 hours of sunshine each. The region's diverse weather patterns make it ideal for various outdoor activities throughout the year. For more details, visit Podgrad climate.

Conclusion

In conclusion, Ilirska Bistrica, Slovenia, experiences a rich tapestry of climatic and environmental changes throughout the year, marked by notable variations in temperature, precipitation, sunshine duration, UV Index, and daylight. The region transitions from the cold, shorter days of winter to the warm, sunlit expanses of summer, ultimately cycling back to the cooler months. Each season contributes uniquely to the overall climate profile, offering residents and visitors alike a diverse array of weather experiences. Understanding these patterns is essential for promoting outdoor activities, ensuring sun safety, and appreciating the region's ecological richness. As such, Ilirska Bistrica exemplifies how climate shapes both the natural environment and human engagement with it throughout the year.

Discover the Climate of Ilirska Bistrica's Places

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