May weather forecast
Shiraz, Iran

Spring morphs into summer in May, with temperatures soaring into the 30s°C. The warmth gets intensified as humidity dips to the lowest for the year, making the heat more palpable. With only 7mm (0.28") of rainfall, May can be considered as the start of the arid period in Shiraz. People take advantage of 13.6 hours daylight while managing to escape the heat during peak hours. The days with intensified brightness suggest carrying a good supply of water and sun protection while venturing outdoors.

Temperature

May in Shiraz brings a rise in the average high-temperature, transitioning from April's warm 23.8°C (74.8°F) to a tropical 30.6°C (87.1°F). Shiraz, in May, displays a significant temperature downturn during the night, with an average reading of 13.2°C (55.8°F).

Humidity

In Shiraz, Iran, the average relative humidity in May is 32%.

Rainfall

In Shiraz, during May, the rain falls for 2.1 days and regularly aggregates up to 7mm (0.28") of precipitation. Throughout the year, there are 46.6 rainfall days, and 306mm (12.05") of precipitation is accumulated.

Snowfall

In Shiraz, Iran, snow does not fall in March through November.

Daylight

The average length of the day in May in Shiraz is 13h and 38min.
On the first day of the month, sunrise is at 05:16 and sunset at 18:36. On the last day of May, sunrise is at 05:00 and sunset at 18:54 +0330.

Sunshine

In Shiraz, the average sunshine in May is 10.5h.

UV index

The months with the highest UV index in Shiraz are May through August, with an average maximum UV index of 12. A UV Index value of 11, and more, symbolizes an extreme threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: In May, the maximum UV index of 12 suggests these recommendations:
Execute every important safeguard, as unprotected skin and eyes could burn within moments. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days. Use liberally and reapply a broad-spectrum SPF 30+ sunscreen every two hours, or straight away after any outdoor workout or swim.