Monthly climate guide
Tehran weather in May
Expect hot weather in Tehran in May: afternoons reach about 29°C (85°F), while nights drop to around 15°C (59°F). Around 15 mm of rain falls over the month (very dry), and skies are a mix of sun and cloud. Daytime highs are 7°C warmer than April and 6°C cooler than June.
What stands out in May
- It warms up quickly from here: by June highs are about 6°C higher.
- Seasonally, May counts as late spring in Tehran.
- Rain is well below Tehran's usual level (around 52% less).
- Evenings cool off sharply: the daily range is around 14°C, so pack a layer.
Avg high
29°C
85°F
Avg low
15°C
59°F
Rainfall
15 mm
very dry
Humidity
40%
relative
Sky
48%
cloud · a mix of sun and cloud
Tehran weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 10°C / 49°F | -1°C / 31°F | 36 mm | 58% | 51% |
| February | 12°C / 53°F | 0°C / 32°F | 43 mm | 57% | 52% |
| March | 17°C / 62°F | 4°C / 40°F | 43 mm | 53% | 58% |
| April | 22°C / 72°F | 9°C / 49°F | 36 mm | 50% | 58% |
| May | 29°C / 85°F | 15°C / 59°F | 15 mm | 40% | 48% |
| June | 36°C / 96°F | 21°C / 69°F | 6 mm | 26% | 31% |
| July | 38°C / 101°F | 24°C / 74°F | 11 mm | 23% | 35% |
| August | 37°C / 98°F | 23°C / 73°F | 12 mm | 24% | 25% |
| September | 32°C / 90°F | 19°C / 66°F | 21 mm | 29% | 24% |
| October | 24°C / 75°F | 12°C / 54°F | 54 mm | 45% | 37% |
| November | 15°C / 59°F | 5°C / 40°F | 60 mm | 58% | 55% |
| December | 11°C / 51°F | 1°C / 33°F | 38 mm | 60% | 49% |
What to pack for May
- Light, breathable clothing (cotton or linen)
- A sun hat and high-SPF sunscreen
- A refillable water bottle
- An extra layer — evenings are noticeably cooler than afternoons
Is May a good time to visit Tehran?
Compare the months in the chart above to find your ideal window.
Best time to visit Tehran →Other Iran cities in May
Cite or embed this data
Writing about this destination? Copy a ready-made citation or embed a live widget — free, just keep the link.
Tehran weather in May. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/iran/tehran/may
<a href="https://weathercompare.eu/weather/iran/tehran/may">Tehran weather in May</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/iran/tehran" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Tehran weather in May"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/iran/tehran/may">Tehran weather in May</a> – WeatherCompare</p>
Tehran in May: quick answers
Is May a good time to visit Tehran?
May is a reasonable time for Tehran: highs around 29°C and about 15 mm of rain, though not one of the three best months.
How warm is Tehran in May?
Average highs are about 29°C (85°F) and average lows about 15°C (59°F), based on 10 years of daily data.
Does it rain a lot in Tehran in May?
Tehran typically gets around 15 mm of rain in May — very dry.
Figures are long-term averages for the area around Tehran (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.