Climate averages 1991–2020
Tehran weather
in July.
A very hot, very dry month: the warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a very hot month in Tehran: daytime highs average 35.6°C and nights cool to about 24.5°C. By daytime temperature it is the warmest month of the year.
Expect about 4.6 mm of rain on roughly 1 day, which makes July a very dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 19 min on an average July day.
The nearest other city in this atlas is Tajrīsh (12 km away). In July its highs average 32.3°C, 3.3°C cooler than Tehran, with 4.6 mm of rain.
Among the 128 cities listed in Iran, Tehran ranks 59th of 128 for the warmest July highs and joint 99th of 128 for the driest July (rainfall, lowest first). The mean July high of those 128 cities is 35.7°C; Tehran is 0.1°C cooler than that mean.
From July to August, average highs fall by 1.0°C to 34.6°C, and monthly rainfall falls from 4.6 mm to 4.2 mm.
The annual picture
July in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Tehran climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 5.3°C-5.3°C | -5.3°C | 42 | 7.6 | 10.010 h |
| February | 7.4°C-3.5°C | -3.5°C | 49 | 8.5 | 10.911 h |
| March | 13.3°C1.6°C | 1.6°C | 62 | 9.5 | 11.912 h |
| April | 20.0°C8.0°C | 8.0°C | 51 | 9.5 | 13.113 h |
| May | 26.6°C14.0°C | 14.0°C | 22 | 5.0 | 14.014 h |
| June | 32.9°C20.4°C | 20.4°C | 5.8 | 1.6 | 14.515 h |
| July, selected | 35.6°C24.5°C | 24.5°C | 4.6 | 1.2 | 14.314 h |
| August | 34.6°C23.4°C | 23.4°C | 4.2 | 0.8 | 13.514 h |
| September | 29.9°C18.6°C | 18.6°C | 4.7 | 0.9 | 12.412 h |
| October | 22.6°C12.0°C | 12.0°C | 21 | 4.1 | 11.311 h |
| November | 13.4°C3.8°C | 3.8°C | 45 | 7.1 | 10.310 h |
| December | 7.6°C-2.2°C | -2.2°C | 43 | 7.5 | 9.810 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
July in nearby cities
- Tajrīsh in JulyIran · 12 kmHigh 32.3°C · Low 23.0°C · 4.6 mm rain
- Eslamshahr in JulyIran · 23 kmHigh 37.1°C · Low 23.3°C · 1.7 mm rain
- Bāghestān in JulyIran · 27 kmHigh 36.8°C · Low 22.3°C · 2.7 mm rain
- Golestān in JulyIran · 29 kmHigh 37.4°C · Low 23.2°C · 1.7 mm rain
- Qarchak in JulyIran · 33 kmHigh 38.1°C · Low 24.6°C · 1.3 mm rain
- Shahrīār in JulyIran · 33 kmHigh 35.9°C · Low 21.9°C · 1.4 mm rain
- Pākdasht in JulyIran · 34 kmHigh 37.2°C · Low 24.9°C · 1.2 mm rain
- Pardīs in JulyIran · 36 kmHigh 30.4°C · Low 20.5°C · 5.2 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Tehran) is explained once on the Tehran year overview and on the Sources, method and limits page.
Tajrīsh lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.