Last updated: January 18, 2025
Fars, Iran, experiences a distinctive climate characterized by the Köppen-Geiger classifications of BWh (hot desert), BSk (cold semi-arid), and BSh (hot semi-arid) climates. The region showcases extreme temperature variations, with a minimum recorded temperature of -21°C (-6°F) in January, highlighting the potential for harsh winter conditions. Conversely, the summer months see an average temperature of 20°C (68°F), with peaks reaching a scorching 47°C (117°F) in June. Such climatic extremes underscore the unique environmental conditions prevalent in Fars, significantly influencing its ecosystem and human activities.
Fars, Iran, exhibits a striking seasonal temperature pattern, primarily characterized by significant fluctuations between winter and summer. In the depths of winter, particularly January, temperatures plummet to a minimum of -21°C (-6°F), with averages around 8°C (46°F), while maximums only reach 30°C (86°F). As the seasons progress into spring, temperatures gradually moderate, peaking in April with an average of 19°C (66°F) and maximums climbing to 39°C (102°F). The onset of summer brings dramatic heat, with averages soaring to 30°C (87°F) in June and maximums hitting a staggering 47°C (117°F). This intense warmth continues through July and August, where temperatures remain high but begin to slightly recede in September. By October, a transition towards cooler autumn weather is marked by decreasing average temperatures and the re-emergence of minimums below freezing, creating a dynamic cycle that profoundly influences the region's climate and lifestyle throughout the year.
The climate in the Fars province of Iran exhibits notable variations across different cities. In Sarvestan, temperatures range from a chilling minimum of -5°C (22°F) in February to a scorching maximum of 40°C (104°F) in July monthly temperatures in Sarvestan. Shiraz experiences even colder winters, with minimums dropping to -15°C (5°F) in January, while also reaching highs of 39°C (103°F) in July monthly temperatures in Shiraz. Pasargad records the coldest winter temperatures in the region, hitting -17°C (2°F) in January, but similarly to the others, it sees maximums of 39°C (102°F) in August monthly temperatures in Pasargad.
Precipitation in Fars, Iran, follows a distinct seasonal pattern, with the majority of rainfall concentrated in the winter months. January starts the year with 31 mm (1.2 in) of rain over about 3 days, gradually increasing in February to 69 mm (2.7 in) across 4 days. March maintains substantial rainfall, contributing 63 mm (2.5 in) over 5 days. As spring progresses into April, precipitation begins to decline significantly, dropping to 25 mm (1.0 in), followed by even less rainfall in May, with just 10 mm (0.4 in) accumulated over 2 days.
The summer months experience an almost complete cessation of rainfall, with June, July, and August recording negligible amounts, highlighting Fars' arid climate. Occasionally, only trace amounts are noted in July and August, while September and October see minimal rainfall returning, each contributing around 1 mm (0.0 in). The late autumn months bring a slight revival, with November providing 34 mm (1.4 in) of precipitation over 3 days, and December follows closely with 32 mm (1.2 in) across 2 days. This irregular precipitation pattern reflects the overarching semi-arid climate of the region, impacting agricultural practices and water resource management in Fars.
In Fars, Iran, sunshine duration showcases a remarkable seasonal trend, with hours of sunlight steadily increasing from the winter months into the summer. Starting with 244 hours of sunshine in January, days slowly lengthen, culminating in a significant leap during spring. By March, sunlight hours reach 337 and further increase to 346 hours in April. The trend peaks in May, boasting an impressive 380 hours, as the region transitions toward the hot summer. This consistent rise sets the stage for June and July, where the sunshine remains remarkably consistent at 386 hours, emphasizing the prolonged daylight typical of the warmest months.
As summer wanes into autumn, Fars continues to enjoy abundant sunshine, although a gradual decline in sunlight hours begins. August sees 374 hours of sunshine, tapering off to 345 hours by September, and further decreasing through October with 333 hours. By November, the region experiences a drop to 295 hours, reflecting the beginning of cooler temperatures and shorter days. December offers a slight recovery to 299 hours but remains lower than the peak summer months. This clear sunlight pattern underscores Fars' arid climate and its profound influence on daily life and agriculture throughout the seasons.
The UV Index in Fars, Iran, demonstrates a pronounced seasonal variation, with values peaking during the spring and summer months. In January, the UV Index registers at 7, falling into the high exposure category, which necessitates a burn time of 25 minutes for unprotected skin. However, as winter transitions into February, the index escalates to 9, indicating very high exposure levels with a reduced burn time of just 15 minutes. The real intensity of UV radiation is observed in March and April, where the index peaks at 12, classified as extreme, and maintaining a rapid burn time of 10 minutes. Such conditions underscore the importance of protective measures against UV radiation as the season progresses.
The intensity remains extreme throughout May, reaching a peak of 15 before slightly moderating to 14 in June. The summer months in Fars typically see the UV Index hovering between 13 and 14, highlighting significant risks associated with prolonged sun exposure, as the burn time consistently remains at 10 minutes. As autumn approaches, the index gradually declines; October sees values dropping to 10 with very high exposure, indicative of changing conditions. By November and December, the UV Index stabilizes again in the high exposure category, at 7 and 6, respectively, allowing for longer burn times of 25 minutes. Such fluctuations in UV levels throughout the year emphasize the necessity for sun safety awareness, particularly during the months of highest radiation exposure.
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In Fars, Iran, daylight duration exhibits a clear seasonal progression, with hours of sunlight increasing steadily from winter into spring and peaking during the summer months. January begins the year with approximately 10 hours of daylight, providing a gradual transition into February and March, where daylight extends to 11 hours. As the region moves into April, daylight increases to 12 hours, marking the onset of spring. In May, the days continue to grow longer, reaching 13 hours. This trend persists into the summer months of June, July, and August, where Fars enjoys a consistent 13 hours of daylight, allowing ample opportunity for outdoor activities and agricultural pursuits.
As autumn approaches, the duration of daylight begins to recede, with September seeing a slight decrease to 12 hours. This diminishes further in October back to 11 hours, signaling the transition toward winter. By November and December, daylight shrinks to 10 hours, mirroring the time at the start of the year. This cyclical pattern of daylight duration is emblematic of Fars’ climatic rhythm, highlighting the region's distinct seasonal changes while also impacting daily life, agriculture, and energy consumption throughout the year.
Marvdasht, Iran experiences a diverse climate characterized by distinct seasonal variations. Winter months, particularly January and February, see low temperatures ranging from -6°C to -5°C (21°F to 24°F) and significant precipitation, while summers are hot and dry, with maximum temperatures soaring up to 41°C (107°F) in July and August. The region records the highest sunshine hours from May to July, peaking at 389 hours in July. Rainfall is scarce during the summer months, contributing to the arid conditions typical of the season. For more detailed information, visit Marvdasht climate.
Pasargad, Iran, experiences a continental climate with significant temperature variation throughout the year. Winters are cold, with January lows reaching -17°C (2°F) and high averages around 3°C (38°F), while summers are hot, peaking in July and August with average temperatures of 28°C (82°F) and 26°C (79°F) respectively. Rainfall is concentrated from January to March, peaking in March with 62 mm, while the summer months typically see little to no precipitation. Abundant sunshine is a feature year-round, with May and June offering the most, both exceeding 380 hours. For a detailed overview, visit Pasargad climate.
Sarvestan, Iran experiences a diverse climate with significant temperature variations throughout the year. Winter months, particularly January and February, can see minimum temperatures drop to -5°C (22°F), while July and August reach highs of around 40°C (104°F). Precipitation is heaviest in February and March, totaling 61 mm (2.4 in) and 58 mm (2.3 in) respectively, while June and September typically receive little to no rain. The region enjoys abundant sunshine, with May and June receiving around 380 hours of sunshine each, making it a bright destination. For more details, visit Sarvestan climate.
Shiraz, Iran experiences a diverse climate characterized by cold winters and hot summers. January temperatures range from a frigid -15°C to a pleasant average of 5°C, while July sees much higher averages around 29°C, peaking at 39°C. Precipitation is most significant in the early months, with February and March recording 80 mm and 91 mm, respectively, before tapering off to dry conditions in summer. The city enjoys abundant sunshine throughout the year, with May and June boasting nearly 400 hours. For more detailed climate information, visit Shiraz climate.
In conclusion, the climate of Fars, Iran, is marked by its distinct seasonal variations in temperature, precipitation, sunshine duration, UV Index, and daylight hours. The region experiences extreme temperatures, from frigid winters to blistering summers, alongside a unique precipitation pattern that favors the winter and spring months. The abundance of sunshine, particularly during the summer, coupled with high UV indices, underscores the need for proactive sun protection measures. As daylight hours fluctuate throughout the year, residents must adapt their lifestyles and agricultural practices accordingly. Understanding these climatic trends is essential for optimizing resource management and enhancing quality of life in Fars, reflecting the profound interplay between environment and human activity.