Tehran Climate by Month
Tehran, Iran
Very hot summers and cool winters, with little rain, mostly from November to March.
Very hot summers and cool winters, with little rain, mostly from November to March: that's Tehran's climate in short. Expect highs of 97°F (36°C) in July and 48°F (9°C) in January, with the coldest nights (January) near 36°F (2°C). It gets only 9.7 in (247 mm) of rain a year. June to September are almost completely dry. The air is dry, averaging 42% relative humidity.
- Warmest month
- 97°F(36°C)
- Average high, July
- Coldest nights
- 36°F(2°C)
- Average low, January
- Rain per year
- 9.7 in(247 mm)
- Wettest: January
- Humidity
- 42%
- Sunniest: June
Best and worst months in Tehran
Best for weatherOctober is the best time for weather in Tehran: highs near 75°F (24°C) and about 0.7 in (18 mm) of rain a month.
Least pleasantJanuary is the least pleasant month: it's the coldest, with highs of only 48°F (9°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in October.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Tehran weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 48°F(9°C) | 36°F(2°C) | 1.5 in(37 mm) | 67% | 2.3 |
| FebFebruary | 53°F(12°C) | 39°F(4°C) | 1.4 in(36 mm) | 57% | 3.1 |
| MarMarch | 63°F(17°C) | 47°F(9°C) | 1.4 in(36 mm) | 41% | 4.0 |
| AprApril | 72°F(22°C) | 56°F(14°C) | 1.1 in(29 mm) | 39% | 4.9 |
| MayMay | 82°F(28°C) | 64°F(18°C) | 0.5 in(12 mm) | 32% | 6.1 |
| JunJune | 93°F(34°C) | 73°F(23°C) | 0.2 in(5 mm) | 26% | 7.1 |
| JulJuly | 97°F(36°C) | 77°F(25°C) | 0.1 in(3 mm) | 27% | 6.9 |
| AugAugust | 95°F(35°C) | 75°F(24°C) | 0.1 in(2 mm) | 29% | 6.4 |
| SepSeptember | 87°F(31°C) | 68°F(20°C) | 0.1 in(2 mm) | 31% | 5.4 |
| OctOctoberBest | 75°F(24°C) | 58°F(15°C) | 0.7 in(18 mm) | 41% | 4.0 |
| NovNovember | 59°F(15°C) | 46°F(8°C) | 1.3 in(32 mm) | 59% | 2.9 |
| DecDecember | 50°F(10°C) | 39°F(4°C) | 1.4 in(35 mm) | 60% | 2.2 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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