Last updated: August 21, 2025
May in Qazvin, Iran presents a dynamic climate characterized by a significant temperature range. Daytime highs can soar to a sizzling 34°C (93°F), while nights offer a cooler refuge with temperatures dipping to a minimum of 4°C (40°F). The average temperature stabilizes around a comfortable 18°C (65°F), making this month quite versatile. Rainfall is notable, with approximately 48 mm (1.9 in) of precipitation spread across 10 days, contributing to a humidity level of 65%. This combination of warmth and moisture shapes a vibrant and refreshing atmosphere for both residents and visitors.
As the vibrant month of May unfolds in Qazvin, Iran, temperatures begin to reflect the transition into warmer seasons. With a minimum of 4°C (40°F) and a pleasant average of 18°C (65°F), the warmth is palpable, especially as the maximum climbs to a summery 34°C (93°F). This marks a significant shift from the chill of winter months, where January’s lows plunge to -14°C (7°F). By May, residents and visitors alike can enjoy outdoor activities in favorable conditions, making it an ideal time to experience the city's rich culture and history. As spring gives way to early summer, the rising temperatures continue a steady upward trend, hinting at the sultry heat to come in the following months.
In May, Qazvin experiences a moderate drop in precipitation, receiving 48 mm (1.9 in) over approximately 10 days of rainfall. This marks a decline from the previous month, April, which saw an impressive 90 mm (3.6 in) across 12 days. The transition to May indicates a shift towards drier conditions, setting the stage for the summer months ahead, where rainfall plummets significantly in June and continues to diminish through the summer. Despite this reduction, May’s precipitation still contributes to the region's lush spring landscape, making it a refreshing interlude before the aridness of summer takes hold.
As May arrives in Qazvin, Iran, residents experience a shift in humidity levels, which drop to 65%, continuing the trend observed since April. This slight decrease reflects the onset of warmer weather, as the city transitions into summer. Notably, the humidity levels in May are notably lower than the peaks of 75% seen earlier in the year, particularly in the winter months of January and February. As the year progresses, a pattern emerges where humidity gradually declines, reaching a low of 49% in August before rising again in the fall. This cyclical variation underscores the dynamic climate of Qazvin, making May a pleasant month characterized by clear skies and comfortable humidity.
As we transition into May in Qazvin, Iran, the UV Index escalates to a striking 13, placing it in the extreme exposure category with a burn time of just 10 minutes. This marks a significant increase from the moderate levels seen in January and February, and the very high levels of March and April. The rising temperatures signal a shift towards summer, with the sun's intensity peaking in May. As the days grow longer and sunnier, it's essential to take precautions against the sun's harsh rays. With the UV Index expected to remain high throughout the following months, staying vigilant is key to enjoying the outdoors safely. For more information, check out the detailed guide at Qazvin UV Index.
UV Risk Categories
As spring blossoms into summer in Qazvin, the city basks in a remarkable surge of sunlight, peaking in May with 387 hours of radiant sunshine. This trend reveals a steady increase from 221 hours in January, gradually elevating through the months, especially notable in March and April. June and July maintain this golden glow, matching with 398 hours, suggesting that the warmth and brightness of May set the stage for an enduring sunny season. Despite a gradual decline in August and the arrival of autumn, Qazvin continues to enjoy ample sunshine well into September, making the region a radiant destination for those seeking warmth and light.
In Qazvin, Iran, the likelihood of sunny weather in May stands at 60%, which represents a slight decline from the sunnier days of April at 59%. As spring turns to summer, the chances of sunshine begin to rebound, foreshadowing the brighter months ahead. This trend is evident as later months like June and July boast impressive probabilities of 91% and 84% sunshine, respectively. While May's weather may be somewhat overcast compared to the summer peak, it still offers a pleasant balance, making it an ideal time for outdoor activities before the intense heat of summer sets in.
In Qazvin, Iran, the daylight duration exhibits a notable trend throughout the year, marked by a gradual increase and subsequent decrease in sunlight hours. Beginning in January with only 9 hours of daylight, the days steadily lengthen, reaching a peak of 14 hours in both May and June. This extended daylight fosters a vibrant atmosphere as spring transitions into summer, ideal for outdoor activities and social gatherings. As summer wanes, daylight begins to decline, with 13 hours in August and tapering off to 12 and 11 hours in September and October respectively. By the time winter arrives, daylight shrinks back to 9 hours, creating a cyclical pattern that reflects the rhythmic dance of the seasons in this region.
In Qazvin, Iran, the wind in May gently stirs at an average speed of 2.6 m/s (6 mph), reflecting a slight increase from the preceding months. The journey from January to April reveals a consistent and calm breeze, with January recording the lowest average of 2.2 m/s (5 mph). As spring unfolds, March experiences a peak of 2.7 m/s (6 mph), hinting at the invigorating shifts of the season. However, May strikes a balance, maintaining a refreshing airflow that effortlessly transitions into the summer months, where July sees the highest winds at 3.1 m/s (7 mph). This gradual rise in wind speed illustrates the changing dynamics of Qazvin's climate, creating a delightful backdrop for outdoor activities as nature awakens from its winter slumber.
Weather in Qazvin varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Qazvin, focusing on differences in temperature, rainfall, humidity, and UV levels.
May and January exhibit strikingly different weather patterns. In May, temperatures range from a minimum of 4°C (40°F) to a maximum of 34°C (93°F), creating a warm average of 18°C (65°F), while January sees much colder conditions with temperatures ranging from -14°C (7°F) to 14°C (57°F) and an average of just 1°C (34°F). May experiences more pleasant weather with a total precipitation of 48 mm (1.9 in) over 10 days, compared to January's 41 mm (1.6 in) over only 6 days. Additionally, humidity levels are slightly lower in May at 65%, whereas January retains a higher humidity level of 75%, adding to the chill of the winter air. For more specific details on January weather patterns, check Qazvin weather in January.
May and February present dramatically contrasting weather conditions. In May, temperatures range from a minimum of 4°C (40°F) to a maximum of 34°C (93°F), with an average of 18°C (65°F), creating a warm and inviting climate. February, on the other hand, experiences much colder temperatures, with a minimum of -16°C (3°F) and a maximum of 17°C (63°F), averaging just 3°C (37°F). While May sees 48 mm (1.9 in) of precipitation over approximately 10 days, February has higher rainfall at 78 mm (3.1 in) despite only having 9 wet days. Additionally, February tends to be slightly more humid, with humidity levels at 75% compared to May's 65%. For a detailed look at February weather, you can visit Qazvin weather in February.
In comparing the weather between March and May, May boasts significantly warmer temperatures, with a minimum of 4°C (40°F) and an average of 18°C (65°F), while March starts as low as -7°C (20°F) and has a considerably cooler average of 8°C (46°F). Additionally, May can reach highs of 34°C (93°F), offering more warmth than March's maximum of 28°C (82°F). While March experiences slightly higher precipitation at 71 mm (2.8 in) over 11 days, May has milder rainfall at 48 mm (1.9 in) across 10 days, contributing to a lower humidity of 65% in May compared to 72% in March. For more details, check Qazvin weather in March.
In comparing the weather of April and May, May generally offers warmer temperatures, with a minimum of 4°C (40°F) and a maximum of 34°C (93°F), while April's temperatures range from a chilly -7°C (20°F) to a warm 29°C (84°F). The average temperature in May is 18°C (65°F), making it significantly milder than April's average of 13°C (55°F). Additionally, May experiences less precipitation, recording 48 mm (1.9 in) over 10 days compared to April's 90 mm (3.6 in) over 12 days. Both months have a consistent humidity level of 65%, but with May's warmer temperatures, the overall climate feels notably different. For more detailed information, visit Qazvin weather in April.
May and June exhibit notable differences in weather conditions. In May, temperatures range from a minimum of 4°C (40°F) to a maximum of 34°C (93°F), featuring an average of 18°C (65°F). The month experiences approximately 48 mm (1.9 in) of precipitation over about 10 days, resulting in a relatively humid environment at 65%. In contrast, June sees a significant increase in temperatures, with minimums of 10°C (51°F) and a maximum reaching up to 38°C (100°F), averaging 24°C (76°F). This month is markedly drier, receiving just 5 mm (0.2 in) of rain across only 1 day, all while maintaining the same humidity level of 65%. For more insights into the weather specifics for June, check Qazvin weather in June.
May typically features a wider temperature range, with minimums dipping to 4°C (40°F) and highs reaching up to 34°C (93°F), resulting in an average of 18°C (65°F). This month also sees more precipitation, accumulating 48 mm (1.9 in) over about 10 days and maintaining a humidity level of 65%. In contrast, July offers warmer weather, with temperature lows of 13°C (56°F) and highs soaring to 40°C (104°F), averaging 27°C (80°F). Notably, July is much drier, with only 4 mm (0.1 in) of precipitation over just one day and humidity at a slightly lower 61%. For more details, you can check Qazvin weather in July.
May and August present contrasting weather patterns. In May, temperatures range from a chilly 4°C (40°F) at night to a warm 34°C (93°F) during the day, with an average of 18°C (65°F). The month sees frequent rainfall, with about 48 mm (1.9 in) of precipitation spread over 10 days, resulting in a humidity level of 65%. In contrast, August is significantly warmer, with a minimum temperature of 10°C (51°F) and a blazing maximum of 38°C (101°F), averaging 25°C (78°F). Rainfall is scarce in August, totaling just 3 mm (0.1 in) across only 1 day, leading to a lower humidity of 49%. For more detailed information, you can check Qazvin weather in August.
May and September each offer distinct weather patterns, showcasing the transitions of spring and early autumn. In May, temperatures range from a minimum of 4°C (40°F) to a maximum of 34°C (93°F), with an average of 18°C (65°F) and experiencing 48 mm (1.9 in) of precipitation over approximately 10 days. The humidity at this time is around 65%, which can make the warmth feel more intense.
In contrast, September brings slightly higher temperatures, with a minimum of 6°C (43°F) and a maximum of 37°C (99°F), alongside an average of 22°C (72°F). This month is notably drier, receiving just 3 mm (0.1 in) of rainfall over only 1 day, and the humidity drops to 58%, making the heat feel more comfortable. For more detailed insights, you can explore Qazvin weather in September.
In comparing the weather patterns of May and October, we see notable differences. May typically boasts a wider temperature range with minimums around 4°C (40°F) and maximums reaching up to 34°C (93°F), averaging 18°C (65°F). This month experiences around 48 mm (1.9 in) of precipitation over approximately 10 days, accompanied by a humidity level of 65%. In contrast, October experiences cooler temperatures with minimums of 2°C (37°F) and maximums of 31°C (87°F), averaging 15°C (59°F). The month sees slightly less precipitation at 37 mm (1.5 in) over just 6 days, but the humidity rises to 73%. For more detailed information, you can check the Qazvin weather in October.
In May, the weather typically ranges from a minimum of 4°C (40°F) to a maximum of 34°C (93°F), with an average temperature of 18°C (65°F). This month experiences around 48 mm (1.9 in) of precipitation over about 10 days and has a humidity level of 65%. In contrast, November sees cooler temperatures, with a minimum of -5°C (23°F) and a maximum of 24°C (75°F), averaging at 8°C (46°F). The month has slightly higher precipitation at 53 mm (2.1 in) over 9 days, accompanied by increased humidity at 75%. For a detailed look at November weather patterns, you can visit Qazvin weather in November.
May and December present stark contrasts in weather. In May, temperatures range from a minimum of 4°C (40°F) to a maximum of 34°C (93°F), with an average temperature of 18°C (65°F). The month typically brings about 48 mm (1.9 in) of precipitation over roughly 10 days, accompanied by a humidity level of 65%. In contrast, December features a chillier climate, with temperatures dropping to a minimum of -13°C (8°F) and reaching an average of only 3°C (38°F), peaking at 17°C (63°F). This month sees a bit more precipitation at 54 mm (2.1 in) over 8 days, and humidity is noticeably higher at 72%. For more details on December specifics, check out Qazvin weather in December.
As spring gives way to summer, May in Qazvin brings a significant increase in temperatures compared to the cooler months that precede it. With maximum highs reaching 34°C and an average of 18°C, the city transforms into a warm oasis, inviting outdoor activities and frequent outings. However, it still retains traces of spring as the humidity sits at a moderate 65%, making the mornings and evenings particularly pleasant. Although precipitation occurs on about 10 days, the total rainfall remains relatively low, adding to the overall allure of the month. For those curious about the general climate trends throughout the year, more information can be found here: Qazvin Climate.