Last updated: August 21, 2025
May in Rey, Iran, offers a delightful mix of warmth and vibrancy, with maximum temperatures reaching 38°C (100°F) and an average of 23°C (74°F), providing pleasant conditions for outdoor activities. While the days are generally warm, nights can be refreshingly cool, dipping to a minimum of 10°C (50°F). The month experiences a modest precipitation total of 19 mm (0.7 in) over just three days, contributing to a relatively humidity level of 64% that adds a touch of comfort to the arid surroundings. Ideal for both residents and visitors, May showcases Rey's inviting climate, perfect for exploration and enjoyment.
In Rey, Iran, May ushers in a delightful transition, featuring mild minimum temperatures that start at a pleasant 10°C (50°F) and peak with dazzling highs reaching 38°C (100°F). This month marks a significant rise from April's more temperate climate, with an average temperature soaring to 23°C (74°F), indicative of the approaching summer heat. As the days lengthen and the sun shines brighter, residents and visitors alike experience a vibrant and inviting atmosphere, making May an ideal time to explore the picturesque landscapes and rich culture of this region. This warm trend paves the way for the sweltering months ahead while providing a beautiful balance between the lingering chill of spring and the fervent warmth of summer.
In May, Rey, Iran experiences a notable reduction in precipitation, receiving only 19 mm (0.7 in) of rainfall over just 3 days. This drop is part of a broader trend as the region transitions from the wetter spring months of April and March, which collectively contributed 98 mm of rain, to the drier summer. Following May, only a meager 2 mm of rain falls in both June and July, highlighting the stark contrast in precipitation patterns. This pattern signifies the onset of the dry season, setting the stage for the arid months ahead, where rainfall becomes increasingly scarce, with August typically witnessing no precipitation at all.
In Rey, Iran, May brings a modest humidity level of 64%, marking a slight recovery from the drier spell of April at 62%. This gradual increase mirrors the overall trend of humidity during the spring months, where levels fluctuate from a robust 70% in January down to a low of 52% in July. The shift in May suggests a transition towards the average humidity conditions that dominate later in the year. As the seasons change, Rey experiences a consistent ebb and flow in humidity, setting the stage for the drier, hotter summer months that follow. The nuances of these humidity levels not only shape the local climate but also influence daily life, from agricultural practices to personal comfort.
As May rolls in, Rey, Iran, experiences a dramatic spike in UV index levels, reaching a striking 13—classified as extreme. This significant increase from the previous months is indicative of the region's intensifying sun exposure, reducing safe burn time to just 10 minutes. Compared to April's already high UV index of 9, May marks a notable leap, emphasizing the importance of sun safety measures during this time. It sets the tone for the upcoming summer months, where high UV levels persist, underlining the urgency to protect your skin. For safe sunbathing and outdoor activities, it's crucial to stay informed and prepared. Discover more about the UV index trends in Rey by visiting Rey UV Index.
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In May, Rey, Iran basks in an impressive 382 hours of sunshine, marking a peak in the region's luminous charm. Following steady growth from 225 hours in January to a robust 336 in April, May signifies the transition into a sunnier season, outshining even the months that follow. With June and July just slightly eclipsing May's total, it is evident that late spring brings a delightful burst of sunlight, inviting locals and visitors alike to embrace the outdoors. As the days grow longer into summer, May stands out as a vibrant month, showcasing the allure of Rey's radiant skies.
In May, Rey, Iran experiences a 65% chance of sunny weather, which marks a slight increase from the preceding months of April and March, where the chances hovered around 59% and 58%, respectively. As spring unfolds, the city transitions towards the sun-drenched summer months, evidenced by the rising likelihood of clear skies. This trend continues sharply into June, where the sun shines brilliantly with a 97% chance. While May may not boast the peak sunshine of summer, it still offers a delightful glimpse of warmer days ahead, making it an inviting month for outdoor enthusiasts and sun-seekers alike.
In Rey, Iran, the length of daylight exhibits a clear seasonal rhythm, gradually increasing from 10 hours in January and February to a peak of 14 hours from May to July. As spring blossoms into summer, residents bask in the longest days, enjoying extended hours of sunlight that invite outdoor activities and gatherings. However, as the year progresses into August, daylight begins to wane, shifting to 13 hours, before continuing its descent to 12 hours by September. This journey through the months culminates in the return to 10-hour days in November, ultimately reaching a minimum of 9 hours in December. The progression not only marks the changing seasons but also highlights the interplay between light and life in this fascinating region.
In Rey, Iran, the month of May showcases a wind speed of 2.3 m/s (5 mph), maintaining the same gentle breeze experienced in April. Interestingly, while January and November see the calmest conditions at 1.5 m/s (3 mph), the winds begin to pick up noticeably in March as spring approaches, peaking slightly in June at 2.5 m/s (6 mph). The data reveals a consistent pattern, where wind speeds hover around the 2.3 to 2.5 m/s mark from March through August, before tapering off again toward winter. This trend highlights a refreshing and mild breeze during the late spring and early summer months, perfect for outdoor activities in the region.
Weather in Rey varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Rey, focusing on differences in temperature, rainfall, humidity, and UV levels.
May and January present starkly different weather patterns. In May, temperatures range from a minimum of 10°C (50°F) to a scorching maximum of 38°C (100°F), with an average of 23°C (74°F). The month experiences relatively low precipitation of 19 mm (0.7 in) over just three days, with humidity at 64%. In contrast, January is much colder, with temperatures dipping as low as -12°C (11°F) and peaking at only 16°C (61°F). The average temperature is a mere 4°C (40°F), and the month sees more precipitation at 34 mm (1.3 in) spread over six days, accompanied by slightly higher humidity at 70%. For more details, check out Rey weather in January.
In comparing the weather between May and February, there is a stark contrast in temperatures and precipitation levels. May typically enjoys much warmer conditions, with average temperatures around 23°C (74°F) and a maximum reaching up to 38°C (100°F), while February remains quite cold, averaging just 6°C (44°F) and peaking at 19°C (67°F). Furthermore, February is marked by higher precipitation, with 53 mm (2.1 in) spread over 9 days, compared to May's lighter rainfall of 19 mm (0.7 in) over just 3 days. Humidity levels are relatively similar, hovering around 64% in May and 66% in February. For more detailed insights on February weather, you can visit Rey weather in February.
In comparing the weather between March and May, it's evident that May presents significantly warmer temperatures. With a minimum of 10°C (50°F) and an average high of 23°C (74°F), May offers a much more comfortable climate compared to March, where temperatures can drop to a minimum of -1°C (31°F) and average only 12°C (53°F). Additionally, May experiences less precipitation, with only 19 mm (0.7 in) over 3 days, contrasting with March’s 48 mm (1.9 in) spread over 8 days. Despite this, March has slightly higher humidity at 68%, compared to May's 64%. For more detailed insights, you can visit Rey weather in March.
In comparing the weather between April and May, we see a significant shift in temperature and precipitation patterns. April has cooler temperatures with a minimum of 2°C (37°F) and an average of 17°C (64°F), while May experiences a more robust warmth, reaching a minimum of 10°C (50°F) and an average of 23°C (74°F). The maximum temperatures also rise considerably, peaking at 32°C (91°F) in April compared to 38°C (100°F) in May. Interestingly, April is wetter, receiving 50 mm (2.0 in) of precipitation over 8 days, whereas May sees much less rain at 19 mm (0.7 in) over just 3 days. Humidity levels remain quite similar, with April at 62% and May slightly higher at 64%. For more detailed insights, you can check the specific conditions through this link: Rey weather in April.
May and June present notable differences in weather conditions. In May, temperatures range from a minimum of 10°C (50°F) to a maximum of 38°C (100°F), with an average of 23°C (74°F). The month sees some rainfall, averaging 19 mm (0.7 in) over 3 days, and has a humidity level of 64%. In contrast, June experiences a warmer climate, with minimum temperatures at 17°C (62°F) and a maximum of 40°C (104°F), leading to a higher average temperature of 30°C (86°F). Remarkably, June has little to no precipitation, with only 2 mm (0.1 in) recorded over the month and no rainy days, while humidity slightly decreases to 62%. For more detailed information, you can visit Rey weather in June.
May and July present distinctly different weather patterns. In May, temperatures range from a minimum of 10°C (50°F) to a maximum of 38°C (100°F), with an average of 23°C (74°F). The month experiences a moderate level of precipitation, totaling 19 mm (0.7 in) over three days, and has a humidity level of 64%. Conversely, July boasts warmer temperatures, with a minimum of 21°C (70°F), an average of 33°C (91°F), and a maximum of 42°C (109°F). July is notably drier, receiving only 2 mm (0.1 in) of precipitation over zero days and featuring lower humidity at 52%. For a detailed look at the weather in this month, you can check Rey weather in July.
May and August showcase distinct differences in weather patterns. In May, temperatures range from a minimum of 10°C (50°F) to a maximum of 38°C (100°F), with an average of 23°C (74°F) and about 19 mm (0.7 in) of precipitation spread over three days, resulting in a humidity level of 64%. In contrast, August is noticeably warmer with minimum temperatures of 20°C (67°F) and a peak of 41°C (107°F), averaging 31°C (88°F). This month is characterized by dry conditions, featuring no precipitation and a lower humidity level of 40%. For more details on the weather in August, visit Rey weather in August.
May and September present distinctly different weather profiles. In May, temperatures range from a minimum of 10°C (50°F) to a maximum of 38°C (100°F), with an average of 23°C (74°F). The month sees about 19 mm (0.7 in) of precipitation over three days, contributing to a higher humidity level of 64%. In contrast, September offers warmer temperatures, with a minimum of 16°C (61°F), an average of 27°C (80°F), and a peak of 39°C (102°F). Notably, September experiences virtually no rain, receiving only 1 mm (0.0 in) of precipitation over zero days, resulting in lower humidity at 45%. For more detailed information on weather in Rey during September, check out Rey weather in September.
In May, temperatures in Rey can soar, with minimums around 10°C (50°F) and averages peaking at 23°C (74°F), occasionally reaching as high as 38°C (100°F). The month experiences relatively low precipitation, totaling about 19 mm (0.7 in) over just 3 days, accompanied by a humidity level of 64%. In contrast, October brings cooler temperatures, with the minimum dipping to 7°C (45°F) and an average of 19°C (66°F), peaking at a milder 32°C (91°F). Precipitation slightly increases to 20 mm (0.8 in) across 4 days, while humidity remains fairly low at 61%. For more detailed insights into October weather, check out Rey weather in October.
May and November exhibit stark contrasts in weather. May boasts warmer average temperatures, ranging from a minimum of 10°C (50°F) to a maximum of 38°C (100°F), with an average high of 23°C (74°F). Additionally, it experiences relatively low precipitation, totaling just 19 mm (0.7 in) over about three days and a humidity level of 64%. In contrast, November presents a cooler climate, with temperatures dipping to a minimum of 0°C (32°F) and averaging 11°C (52°F), peaking at 26°C (80°F). Precipitation increases significantly to 50 mm (2.0 in) over seven days, accompanied by higher humidity at 72%. This shift illustrates the transition from spring warmth to the chill of late autumn. For more details, visit Rey weather in November.
May and December present strikingly different weather conditions. In May, temperatures range from a comfortable minimum of 10°C (50°F) to a sizzling maximum of 38°C (100°F), with an average of 23°C (74°F) and relatively low precipitation of 19 mm (0.7 in) over just 3 days. The humidity level is moderate at 64%. Conversely, December experiences much colder temperatures, with a minimum of -5°C (24°F) and a maximum of 19°C (67°F), averaging only 6°C (44°F). Precipitation is higher at 34 mm (1.3 in), occurring on 7 days, and the humidity rises slightly to 70%. For more detailed weather insights, check out Rey weather in December.
As May unfolds in Rey, it brings a delightful shift in weather that contrasts with the cooler temperatures of earlier months. With maximum temperatures peaking at a warm 38°C (100°F), the days become more inviting, making it ideal for outdoor activities. The average temperature hovers around a comfortable 23°C (74°F), while evenings cool down to a pleasant 10°C (50°F), providing a refreshing break. Occasional rain, with just 19 mm (0.7 in) across about three days, adds a touch of moisture to the air, keeping humidity levels around 64%. This balance between warmth and refreshing breezes makes May a vibrant and enjoyable month in Rey. For a deeper dive into the climatic nuances of this region, check out Rey Climate.