May weather forecastTehran, Iran
May
Weather in May
May greets Tehran with the full force of spring and the early onset of summer. While showers persist, they are significantly less than in April, indicating the reducing course of spring. The noticeably longer daylight allows for a smoother transition into summer, with longer, warmer, and brighter days. Temperatures start to climb higher, paving the way for the upcoming heat of the summer season. The city landscape flourishes under these conditions, making May a beautiful month to experience in Tehran.Temperature
Tehran's transition into May brings a rise in the average high-temperature, moving from a comfortable 18.1°C (64.6°F) in April to a warm 25°C (77°F). Tehran's nighttime temperature in May drops to an average of 15.7°C (60.3°F).Humidity
In May, the average relative humidity in Tehran is 29%.Rainfall
In Tehran, in May, it is raining for 12.5 days, with typically 30mm (1.18") of accumulated precipitation. Throughout the year, in Tehran, there are 93.2 rainfall days, and 244mm (9.61") of precipitation is accumulated.Snowfall
April through October are months without snowfall in Tehran.Daylight
The average length of the day in May is 14h and 4min.On the first day of May in Tehran, sunrise is at 05:11 and sunset at 18:51. On the last day of the month, sunrise is at 04:49 and sunset at 19:14 +0330.
Sunshine
In May, the average sunshine is 11.8h.UV index
In May, the average daily maximum UV index in Tehran is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: A daily maximum UV index of 6 in May translates into the following instructions:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Tehran, Iran
- Average high temperature in May: 25°C
The warmest month (with the highest average high temperature) is July (33.8°C).
The month with the lowest average high temperature is January (5.8°C).
- Average low temperature in May: 15.7°C
The month with the highest average low temperature is July (24.3°C).
The coldest month (with the lowest average low temperature) is January (-2.3°C).
Average pressure in May
Tehran, Iran
- Average pressure in May: 1012.2mbar
The month with the highest atmospheric pressure is December (1021.6mbar).
The month with the lowest atmospheric pressure is July (1007.1mbar).
Average wind speed in May
Tehran, Iran
- Average wind speed in May: 9.1km/h
The windiest month (with the highest average wind speed) is June (9.4km/h).
The calmest months (with the lowest average wind speed) are November and December (5.5km/h).
Average humidity in May
Tehran, Iran
- Average humidity in May: 29%
The month with the highest relative humidity is February (52%).
The month with the lowest relative humidity is July (19%).
Average rainfall in May
Tehran, Iran
- Average rainfall in May: 30mm
The wettest month (with the highest rainfall) is April (38mm).
The driest month (with the least rainfall) is September (6mm).
Average rainfall days in May
Tehran, Iran
- Average rainfall days in May: 12.5 days
The month with the highest number of rainy days is April (13.5 days).
The month with the least rainy days is September (2.9 days).
Average snowfall in May
Tehran, Iran
- Average snowfall in May: 0mm
The month with the highest snowfall is January (27mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in May
Tehran, Iran
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Tehran, Iran
- Average daylight in May: 14h and 6min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in May: 11h and 48min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is February (Average sunshine: 7h and 0min).
Average sunshine days in May
Tehran, Iran
- Average sunshine days in May: 10.5 days
The months with the most sunshine days are July and September (22.8 days).
The month with the least sunshine days is April (9.5 days).
Average UV index in May
Tehran, Iran
- Average UV index in May: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in May
Tehran, Iran
- Average cloud cover in May: 12
The month with the most cloud cover is March (Cloud cover 22).
The month with the least cloud cover is September (Cloud cover 4).
Average visibility in May
Tehran, Iran
- Average visibility in May: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
