Tehran weather in May
May in Tehran: warm, dry — one of the best months to visit.
#1 of 12 months in Tehran · #16 of 604 destinations to visit in May · comfort 94/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
Tehran climate normals — May
| Daytime high | 28°C / 82°F | 🌤 warm |
|---|---|---|
| Nighttime low | 14°C / 57°F | |
| Feels like (high) | 26°C / 79°F | |
| Rainfall | 17 mm / 0.7 in | ☀️ dry |
| Rainy days | 5 days | |
| Humidity | 31% | 🌵 dry |
| Dew point | 1°C / 35°F | |
| Sunshine | 12.5 h/day | |
| Daylight | 14.1 h | |
| Wind | 12 km/h / 7 mph | |
| Air quality (US AQI) | 74 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Tehran in May — FAQ
- Is May a good time to visit Tehran?
- May in Tehran: warm, dry — one of the best months to visit. It ranks #1 of 12 months for Tehran on SeasonMap's comfort score (94/100).
- What is the weather like in Tehran in May?
- In May, Tehran averages a daily high of 27.5°C and a low of 13.9°C, with about 16.9 mm of rain over roughly 5 rainy days.
- What is the air quality in Tehran in May?
- Tehran has a mean US Air Quality Index of about 74 in May.