Last updated: August 21, 2025
In Zanjan, Iran, May welcomes a pleasant climate, characterized by a maximum temperature reaching 32°C (90°F) and a comfortable average of 15°C (59°F). While the minimum temperature can dip to 2°C (36°F), the month brings about 60 mm (2.4 in) of precipitation over 13 days, allowing the landscape to bloom. With a humidity level hovering around 65%, the weather not only encourages outdoor activities but also enhances the rich natural beauty of the region, making it an ideal time to experience the charm of Zanjan.
In May, Zanjan, Iran begins to shake off the chill of winter, welcoming a noticeable rise in temperatures. With minimums averaging around 2°C (36°F) and maximums soaring to 32°C (90°F), this month marks a significant transition as spring fully unfolds. The average temperature reaches a comfortable 15°C (59°F), inviting both locals and visitors to enjoy the blooming landscape. The warmth of May sets the stage for the approaching summer, reflecting a consistent trend of increasing temperatures throughout the month. As the days grow longer and sunnier, Zanjan transitions seamlessly from the frosty depths of winter to the vibrant life of spring.
In Zanjan, Iran, May typically experiences a moderate level of precipitation, averaging 60 mm (2.4 in) over approximately 13 days. This amount reflects a slight decrease from the 92 mm (3.6 in) recorded in April, highlighting a seasonal transition as the region shifts toward the drier months of summer. Despite the reduction, May still maintains a healthy rainfall pattern, which is crucial for replenishing the local environment before the much drier June, where precipitation plummets to just 15 mm (0.6 in). This trend illustrates the significance of May as a crucial bridge in Zanjan's climate, sustaining both the flora and fauna as temperatures begin to rise.
As spring transitions into summer in Zanjan, Iran, May experiences a comfortable humidity level of 65%, mirroring the conditions of April and setting the stage for the drier months ahead. The trend of gradually decreasing humidity becomes evident as temperatures rise, with May marking the peak of the spring season before the summer months bring lower levels, culminating in a striking 49% in August. This consistent decline from the winter's higher humidity levels in January and February, which linger at 75%, showcases the region's shift towards a more arid climate by mid-year. As the year progresses, humidity further dips to 61% in July and stabilizes around 65% until the cooler months signal a return to a more humid environment. Overall, May stands as a pivotal month in Zanjan's yearly humidity cycle, bridging the lushness of spring to the drier heat of summer.
As May rolls into Zanjan, Iran, residents and visitors alike should brace for the intensely high UV Index of 13, categorized as extreme, with a burn time of just 10 minutes. This stark rise follows the gradual but consistent increase in UV exposure from earlier months. Starting at a moderate level in January, the UV Index climbed steadily through winter and spring, peaking at extreme levels from May onwards. With the sun's rays reaching their zenith, it's crucial to take protective measures against potential skin damage. As the summer months approach, both the intensity and the consistency of these extreme UV levels will continue, making awareness and caution essential. For detailed updates and guidance on UV exposure, check the Zanjan UV Index.
UV Risk Categories
In Zanjan, Iran, the month of May shines brightly with an impressive 385 hours of sunlight, marking a delightful peak in the annual trend of increasing daylight. Following April's already generous 334 hours, May showcases a vibrant transition into the summer months, where sunlight begins to dominate. This pattern continues into June, which records even more sunshine at 401 hours, creating a warm and inviting atmosphere perfect for outdoor activities. As the months roll into the summer, July and August maintain high levels of sunlight, although slightly tempered compared to June. The gradual decline in hours from September to December signals the shifting seasons, but May remains a standout, embodying the essence of sunny vitality that Zanjan experiences as spring unfolds.
May in Zanjan, Iran, offers a 54% chance of sunny weather, reflecting a seasonal transition that hints at warmer days ahead. This modest probability aligns closely with the trends seen in the spring months of March and April, where sunshine chances fluctuate around the mid-50s. As the region heads into summer, a notable increase can be observed, with June's chances skyrocketing to an impressive 89%. This pattern suggests that while May may still see a mix of clouds and sun, the promise of bright, sunny skies is just around the corner as Zanjan prepares to embrace the summer sun.
In Zanjan, Iran, the daylight duration showcases a beautiful cyclical trend across the months. The year begins with 9 hours of daylight in January, gradually increasing to 10 hours in February and reaching a vibrant 11 hours by March. As spring settles in, April witnesses a more significant leap to 13 hours, paving the way for a radiant 14 hours in both May and June. This peak in daylight is sustained throughout July, before the days gradually shorten, with August seeing a slight decline back to 13 hours. As autumn approaches, daylight hours progressively decrease to 12 hours in September and drop further to 11 and 10 hours in October and November, respectively, before the cycle completes with another 9 hours in December. This rhythm of daylight reveals the seasonal charm of Zanjan, inviting residents and visitors alike to appreciate the varying light throughout the year.
In May, Zanjan experiences a gentle average wind speed of 2.7 m/s (6 mph), mirroring the calm yet pleasant conditions of earlier months like January and February. As spring unfolds, the winds remain relatively consistent, reflecting a mild transition from the brisker gusts of March. The persistent tranquility, with wind speeds fluctuating moderately throughout the season, creates a serene atmosphere perfect for outdoor activities. As summer approaches, Zanjan continues to enjoy this gentle breeze, making May an ideal time to savor the region's natural beauty.
Weather in Zanjan varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Zanjan, focusing on differences in temperature, rainfall, humidity, and UV levels.
In May, temperatures typically range from a chilly 2°C (36°F) at night to a warm 32°C (90°F) during the day, with an average of 15°C (59°F). This month experiences about 60 mm (2.4 in) of precipitation over 13 days and maintains a humidity level of 65%. In contrast, January presents a starkly different climate, with temperatures plummeting to a minimum of -24°C (-11°F) and a maximum of 14°C (58°F), averaging -2°C (28°F). With only 42 mm (1.6 in) of precipitation over 7 days and higher humidity at 75%, January is considerably colder and drier, marking a significant seasonal shift. For a more detailed look at January weather, visit Zanjan weather in January.
May and February present stark contrasts in weather. In May, temperatures range from a chilly minimum of 2°C (36°F) to a warm maximum of 32°C (90°F), with an average of 15°C (59°F), while February experiences much colder weather with temperatures dipping to a minimum of -23°C (-10°F) and peaking at 17°C (64°F), averaging around 0°C (32°F). Precipitation in May totals 60 mm (2.4 in) over 13 days, compared to February's 75 mm (3.0 in) over just 10 days. Additionally, February has higher humidity at 75%, as opposed to May's 65%. For a more detailed look at February weather patterns, you can visit Zanjan weather in February.
In comparing the weather of May and March, there is a noticeable shift in temperatures and conditions. May experiences a broader range of temperatures, with a minimum of 2°C (36°F) and a maximum reaching as high as 32°C (90°F), while March is significantly cooler, with temperatures ranging from a minimum of -11°C (13°F) to a maximum of 25°C (77°F). Precipitation levels in March are slightly higher at 69 mm (2.7 in), but both months see a similar number of rainy days, with March having 14 days compared to May's 13 days. Additionally, humidity in March is a bit higher at 72% versus May's 65%. For a detailed look at March weather specifics, you can visit Zanjan weather in March.
In comparing the weather of April and May, we see a marked increase in temperatures as spring progresses. April experiences a minimum temperature of -5°C (22°F) and an average of 10°C (50°F), while May boasts a minimum of 2°C (36°F) and averages 15°C (59°F), peaking at a warmer 32°C (90°F). Although April has slightly higher precipitation at 92 mm (3.6 in) over 14 days, May sees less rain, totaling 60 mm (2.4 in) over 13 days. Both months maintain a consistent humidity level of 65%, but the overall warming trend in May offers a more pleasant climate for outdoor activities. For more details on April's weather, you can visit Zanjan weather in April.
May and June present contrasting yet complementary weather patterns. In May, temperatures range from a chilly minimum of 2°C (36°F) to a warm maximum of 32°C (90°F), with an average temperature of 15°C (59°F). The month is relatively wet, with 60 mm (2.4 in) of precipitation over 13 days, contributing to a humidity level of 65%.
In contrast, June brings a noticeable increase in warmth, with temperatures ranging from a minimum of 7°C (44°F) to a maximum of 36°C (97°F) and an average of 21°C (69°F). The month sees considerably less precipitation, only 15 mm (0.6 in) over just 4 days, while maintaining the same humidity level of 65%.
For more specific insights into the weather in June, you can visit Zanjan weather in June.
In May, the weather in Zanjan is characterized by a broad temperature range, with minimums dipping to 2°C (36°F) and maximums reaching up to 32°C (90°F), resulting in an average temperature of around 15°C (59°F). Despite the pleasant warmth, May experiences considerable precipitation, with 60 mm (2.4 in) over approximately 13 days, and a relatively high humidity level of 65%.
In contrast, July sees a shift to warmer conditions, as temperatures rise significantly. The minimum temperature increases to 8°C (47°F) and the maximum can soar to 38°C (101°F), leading to a much higher average of 22°C (73°F). Additionally, July is much drier, with only 11 mm (0.4 in) of precipitation falling over just 3 days, and humidity lowers slightly to 61%.
For more detailed insights into the weather during this month, you can visit Zanjan weather in July.
May and August present distinctly different weather patterns. In May, temperatures range from a chilly 2°C (36°F) to a warm 32°C (90°F), with an average of 15°C (59°F). The month also sees considerable precipitation, totaling 60 mm (2.4 in) over 13 days, and a humidity level of 65%. In contrast, August boasts milder conditions, with temperatures ranging from a minimum of 5°C (42°F) to a peak of 36°C (97°F) and an average of 21°C (70°F). Notably, August experiences significantly lower precipitation at just 8 mm (0.3 in) over only 2 days, along with a reduced humidity of 49%. For more insights, you can check Zanjan weather in August.
May and September present distinct weather patterns, reflecting the transition of seasons. In May, temperatures range from a cooler minimum of 2°C (36°F) to a warm maximum of 32°C (90°F), with an average temperature of 15°C (59°F). The month experiences moderate precipitation, totaling 60 mm (2.4 in) over about 13 days, coupled with a humidity level of 65%. In contrast, September showcases slightly warmer conditions with an average temperature of 18°C (65°F), a minimum of 4°C (39°F), and a maximum reaching 35°C (95°F). The month is notably drier, receiving only 8 mm (0.3 in) of precipitation on just one day, and features lower humidity at 58%. For more detailed weather information, you can refer to Zanjan weather in September.
May and October present contrasting weather patterns, showcasing the transition from spring to autumn. In May, temperatures range from a minimum of 2°C (36°F) to a maximum of 32°C (90°F), with an average of 15°C (59°F). This month experiences about 60 mm (2.4 in) of precipitation over 13 days, coupled with a humidity level of 65%. In contrast, October sees a cooler temperature range, with lows dropping to -2°C (29°F) and highs reaching 28°C (83°F), averaging at 12°C (54°F). Precipitation in October is lighter, totaling 37 mm (1.4 in) across only 7 days, while humidity slightly increases to 73%. For more details on the climate during this month, visit Zanjan weather in October.
May and November present contrasting weather patterns. In May, temperatures range from a comfortable 2°C (36°F) at night to a warm 32°C (90°F) during the day, with an average of 15°C (59°F). The month experiences a moderate level of precipitation, totaling 60 mm (2.4 in) over about 13 days, accompanied by a humidity level of 65%. In contrast, November brings cooler temperatures, with nighttime lows reaching -9°C (16°F) and daytime highs averaging 22°C (73°F), resulting in an average temperature of just 5°C (41°F). Precipitation is slightly higher at 62 mm (2.5 in) spread over 11 days, and humidity increases to 75%. For more specifics on November weather, refer to Zanjan weather in November.
In May, temperatures range from a chilly minimum of 2°C (36°F) to a warm maximum of 32°C (90°F), with an average of 15°C (59°F), showcasing a clear transition into summer. The month receives about 60 mm (2.4 in) of precipitation over 13 days, and humidity averages around 65%. In contrast, December experiences much colder temperatures, with a minimum of -13°C (9°F) and a maximum of 18°C (64°F), resulting in an average of just 1°C (34°F). Though it has slightly less precipitation at 49 mm (1.9 in) over 9 days, December's humidity is higher at 72%. The stark differences in temperature and overall weather clearly highlight the seasonal shift between these two months. For more detailed information, check Zanjan weather in December.
May in Zanjan offers a delightful transition into warmer weather, with temperatures climbing notably compared to the cooler months earlier in the year. While the days can reach a pleasant 32°C (90°F), the evenings remain refreshingly cool, balancing the heat with an average of 15°C (59°F). However, it's also a month where rain makes its presence felt, with about 60 mm (2.4 in) of precipitation spread over 13 days. This combination of warmth and humidity—hovering around 65%—creates a vibrant atmosphere conducive to outdoor activities. For a deeper understanding of what to expect throughout the year, visit Zanjan Climate.