Last updated: January 18, 2025
Chaharmahal and Bakhtiari, located in Iran, exhibits a diverse climate characterized by the Köppen-Geiger climate classes of Csa (Mediterranean) and Dsa (Continental). The region experiences significant temperature variation throughout the year, with a frigid minimum of -24°C (-11°F) recorded in December. Conversely, the summer months can soar to a scorching maximum of 38°C (101°F) in August, contributing to an overall average temperature of 12°C (53°F). This climatic variability not only influences the local ecology but also poses unique challenges and opportunities for the inhabitants of this mountainous province.
The temperature patterns in Chaharmahal and Bakhtiari, Iran, reveal a distinct seasonal progression marked by extreme variations. Winter months, particularly January and February, are characterized by frigid conditions, with minimum temperatures plummeting to around -24°C and average temperatures hovering near -2°C. As the season transitions to spring, temperatures gradually rise, peaking in April with averages of 10°C and maximums reaching 26°C. The late spring through summer months, especially June to August, are notably warm, showcasing maximum temperatures that can soar up to 38°C. In contrast, the onset of autumn brings a cooling trend, with September and October experiencing average temperatures around 21°C and 13°C, respectively. By November and December, the chill returns, with minimum temperatures once again dipping below freezing, thereby emphasizing the region's dynamic climate influenced by its mountainous terrain.
Borujen experiences a minimum temperature of -17°C (1°F) in January and a maximum of 36°C (98°F) in July, making it a region of significant seasonal temperature variation. In contrast, Lordegan records even lower January temperatures, dropping to -23°C (-10°F), while it can reach up to 38°C (101°F) in August. Similarly, Shahr-e Kord has a minimum temperature of -18°C (0°F) in February and a summer high of 36°C (96°F) in July. For further details, you can check the monthly temperatures in Borujen, Lordegan, and Shahr-e Kord through the provided links: monthly temperatures in Borujen, monthly temperatures in Lordegan, and monthly temperatures in Shahr-e Kord.
Chaharmahal and Bakhtiari experiences a seasonal variation in precipitation that aligns closely with its temperature patterns. The winter months, particularly January and February, receive substantial rainfall, totaling 82 mm and 89 mm, respectively, with precipitation occurring over about 7 days each month. March sees a peak in rainfall at 99 mm across 8 days, marking the transition into spring. April demonstrates a notable decrease to 71 mm, followed by a significant decline in May with only 30 mm. This trend indicates a shift towards drier weather as spring advances.
As the region transitions into summer, precipitation dramatically drops, reaching a minimal 3 mm in June and virtually ceasing in July and August, recorded at 0 mm. September sees a slight recovery with 1 mm, maintaining the dry conditions. In stark contrast, October experiences an uptick with 13 mm over 2 days, while November returns to significant rainfall at 83 mm across 6 days, followed by December’s 68 mm. This annual cycle underscores a clear seasonal rhythm, heavily influenced by the local geography and climate dynamics.
In Chaharmahal and Bakhtiari, the sunshine duration exhibits a clear seasonal trend, marked by a steady increase from the winter months into summer. January starts the year with 235 hours of sunshine, which gradually rises to 284 hours in February. March and April reflect this trend further, as daylight hours climb to 337 hours and 346 hours, respectively. The ascent reaches its pinnacle in May, with an impressive 386 hours of sunshine, setting the stage for the sunniest months of the year.
As summer unfolds, June witnesses a peak in sunshine at 397 hours, closely followed by July at 392 hours and August at 377 hours. This summer abundance of sunlight significantly enhances the region’s warmth and agricultural viability. However, as autumn approaches, a slight decline in sunshine is observed, with September and October recording 348 hours and 330 hours, respectively. The year's end brings another decrease, as November and December drop to 282 hours and 289 hours of sunshine, marking a clear transition back to the winter months. Overall, the increasing sunshine from winter through to summer not only highlights the climatic diversity of the region but also its potential for solar energy and agricultural productivity.
In Chaharmahal and Bakhtiari, the UV Index reflects a significant seasonal variation, beginning the year with a moderate rating of 5 in December, which increases rapidly as winter fades. January experiences a high UV Index of 7, necessitating a burn time of 25 minutes for unprotected skin. February further escalates to a very high index of 10, where individuals should limit their sun exposure to just 15 minutes. The trend then shifts dramatically in March, with an extreme UV Index of 13, accentuating the need for heightened sun protection as burn time decreases to a mere 10 minutes.
As the region transitions into the summer months, UV Index values reach their peak, with both May and June recording an astonishing 14, indicating extreme levels of ultraviolet radiation and a consistent burn time of just 10 minutes. This high risk category persists through July and August, slightly diminishing to 12 in August and 11 in September. The UV Index gradually declines as autumn approaches, with a very high index of 9 in October before returning to 6 in November and a moderate level of 5 in December. This seasonal fluctuation underscores the importance of sun safety measures, particularly during the spring and summer months when UV exposure is at its most intense.
UV Risk Categories
In Chaharmahal and Bakhtiari, the daylight duration showcases distinct seasonal trends, beginning with approximately 10 hours in January. As February arrives, the days gradually lengthen, reaching 11 hours of daylight, which remains consistent into March. This period marks the transition toward spring, with daylight increasing to 12 hours in April and further extending to 13 hours in May. The arrival of summer in June brings the longest days of the year, peaking at 14 hours of daylight—a remarkable increase that supports increased outdoor activities and agricultural growth.
As summer wanes, daylight duration begins to decline, with July, August, and September consistently offering 13 hours, 13 hours, and 12 hours, respectively. In October, daylight reduces to 11 hours, signaling the approach of autumn. November experiences a further decrease back to 10 hours, maintaining the same duration as January and December. This cyclical pattern reflects the region's geographical position and highlights how daylight duration influences local lifestyles, energy dynamics, and ecological rhythms throughout the year.
Ardal, Iran experiences a diverse climate characterized by cold winters and warm summers. January has temperatures ranging from -19°C to 14°C, while July sees highs up to 35°C. Precipitation is highest in early months, peaking in March at 91 mm, and drops significantly during the summer months. The region enjoys ample sunshine, particularly from April to June with over 300 hours per month. For more detailed information, visit Ardal climate.
Borujen, Iran experiences a diverse climate characterized by cold winters and warm summers. January temperatures range from a frigid -17°C to a mild 15°C, while July can reach up to 36°C. The region sees the most precipitation from November to March, peaking in March with 44 mm, and minimal rainfall during the summer months. Sunshine is abundant, particularly in May and June, offering over 380 hours of sunlight. For more detailed insights, visit Borujen climate.
Chelgard, Iran experiences a continental climate marked by significant temperature variations throughout the year. Winters are harsh, with January temperatures averaging -5°C (22°F) and high precipitation, reaching up to 204 mm (8.0 in) in March. In contrast, summers are warm, with average temperatures peaking at 23°C (74°F) in July and minimal rainfall, particularly in June and July. The region enjoys ample sunshine, particularly from May to August, which sees over 370 hours of sun per month. For more detailed climate data, visit Chelgard climate.
Farrokh Shahr, Iran experiences a diverse climate marked by cold winters and warm summers. January is characterized by low temperatures, with minimums dropping to -13°C (9°F) and average highs around 15°C (60°F), alongside significant precipitation peaking at 39 mm (1.5 in) in February. As the year progresses, temperatures rise, with July seeing maximums hit 37°C (99°F) and minimal rainfall, particularly in the summer months. The region benefits from ample sunshine, with the highest recorded in May at 387 hours, contributing to its warm and dry summers. For more detailed climate information, visit Farrokh Shahr climate.
Farsan, Iran experiences a continental climate characterized by significant seasonal temperature variations. Winters are cold, with January and December recording minimums as low as -24°C (-11°F) and average temperatures around -1°C (30°F). In contrast, summer months like July and August have average temperatures near 24°C (75°F) to 23°C (73°F). The region also sees substantial precipitation, particularly from December to March, with a peak in March at 108 mm (4.3 in), followed by a dry period during the summer. For more details, visit Farsan climate.
The climate in Lordegan, Iran, is characterized by cold winters and hot summers. January and February experience harsh temperatures, with lows reaching -23°C (-10°F) and -22°C (-8°F), while July and August see highs of 38°C (101°F). Precipitation peaks in the early months, with March recording 132 mm (5.2 in), while the summer months see little to no rain. Sunshine is abundant throughout the year, especially from May to July, with over 385 hours recorded in May alone. For more detailed information, visit Lordegan climate.
Shahr-e Kord, Iran, experiences a continental climate characterized by cold winters and warm summers. January and February are particularly chilly, with minimum temperatures dropping as low as -18°C (0°F) and average highs around 15°C (60°F). The city enjoys significant sunshine throughout the year, peaking in May and June with nearly 400 hours. Precipitation is heaviest in the winter months, while summer sees minimal rainfall. For more detailed information, visit Shahr-e Kord climate.
Shalamzar, Iran experiences a continental climate characterized by harsh winters and warm summers. January and February are notably cold, with average temperatures around -3°C (27°F) and -2°C (29°F), respectively, while July and August see average highs reaching 25°C (77°F) and 24°C (75°F). Precipitation is highest in the winter months, particularly in March with 91 mm (3.6 in), tapering off significantly in summer. Sunshine hours peak in the warmer months, with June enjoying 397 hours, contributing to the region's dry spells. For more detailed information, visit Shalamzar climate.
In conclusion, Chaharmahal and Bakhtiari's climate, characterized by temperature fluctuations, precipitation patterns, sunshine duration, UV index, and daylight duration, paints a rich tapestry of environmental dynamics. The region experiences striking seasonal variations that impact not only its weather but also the daily lives and activities of its inhabitants. From the frigid winters with limited daylight and moderate UV exposure to the sun-soaked summers with prolonged daylight and heightened UV risks, understanding these climatic facets is essential for effective resource management, health considerations, and agricultural planning. As climate change continues to shape global weather patterns, the need to adapt and respond to such regional specifics has never been more crucial, ensuring the resilience and sustainability of both the environment and the communities that thrive within it.