UV Index
UV Index
Today's UV index in Tehran, Iran 
will be up to 11.8, indicating a extreme level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-06-01
UV index at 11.8 in Tehran means extreme risk: limit outdoor time especially from 10 a.m. to 4 p.m., actively seek shade, wear protective clothing, broad-brimmed hat, apply SPF 30+ sunscreen every 2 hours, and wear UV-blocking sunglasses. Watch for bright surfaces like water and snow increasing UV exposure.
Tehran's UV index varies throughout the year, typically ranging from moderate in winter to very high in summer months, especially in May and June. The highest UV levels often occur around midday during clear skies.
Tehran experiences hot, dry summers with temperatures often above 30°C (86°F) and cold winters that can drop below freezing. Spring and autumn are short, with mild and pleasant weather. Rain is more common in winter and early spring.
Compared to other Iranian cities, Tehran is hotter than northern coastal areas but cooler than the desert regions to the south. Its UV index is usually higher than in mountainous western Iran but lower than in southern parts near the Persian Gulf. Neighboring countries like Iraq and Afghanistan often have similar or higher summer UV levels.
See the UV index hour by hour for Tehran, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.