Climate averages 1991–2020
Jahrom weather
by month.
See how the year changes. July has the highest average daily maximum; June has the lowest average monthly rainfall.
Pleasant-weather months by our simple rule: MarchAprilNovemberDecember
Long-term climate patterns, not a forecast for a particular trip.
Across the year Jahrom averages a daytime high of 29.0°C and a nighttime low of 16.7°C, with about 243 mm of rain on roughly 26 days. July is the warmest month (average high 40.7°C) and January the coolest (15.6°C). January is the wettest month with 65 mm; June is the driest with under 1 mm.
Months with pleasant weather by a simple rule (average high between 18°C and 29°C, average low of at least 5°C and at most 8 rain days): March, April, November and December. This looks at temperature and rain only, not humidity, wind, sea temperature or crowds.
The annual picture
A year in Jahrom
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
Jahrom climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 15.6°C5.7°C | 5.7°C | 65 | 6.1 | 10.511 h |
| February | 17.9°C7.3°C | 7.3°C | 49 | 5.1 | 11.211 h |
| March | 22.2°C10.8°C | 10.8°C | 50 | 5.0 | 12.012 h |
| April | 28.4°C16.1°C | 16.1°C | 13 | 2.1 | 12.813 h |
| May | 35.2°C21.8°C | 21.8°C | 0.9 | 0.3 | 13.614 h |
| June | 39.6°C25.2°C | 25.2°C | 0.2 | 0.1 | 13.914 h |
| July | 40.7°C26.9°C | 26.9°C | 1.0 | 0.4 | 13.814 h |
| August | 39.8°C25.9°C | 25.9°C | 2.1 | 0.8 | 13.213 h |
| September | 36.4°C22.7°C | 22.7°C | 0.6 | 0.2 | 12.412 h |
| October | 30.8°C18.0°C | 18.0°C | 0.5 | 0.2 | 11.512 h |
| November | 23.3°C12.0°C | 12.0°C | 15 | 2.2 | 10.811 h |
| December | 18.3°C7.7°C | 7.7°C | 45 | 3.6 | 10.410 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
Nearby cities
- FasāIran · 49 kmHigh 26.3°C · Low 13.3°C · 215 mm rain a year
- DārābIran · 100 kmHigh 27.9°C · Low 15.0°C · 232 mm rain a year
- ShirazIran · 159 kmHigh 24.5°C · Low 12.9°C · 396 mm rain a year
- MarvdashtIran · 170 kmHigh 24.1°C · Low 8.3°C · 248 mm rain a year
- Shahr-e ṢadrāIran · 177 kmHigh 21.8°C · Low 8.3°C · 320 mm rain a year
- KāzerūnIran · 223 kmHigh 27.8°C · Low 15.3°C · 389 mm rain a year
- SirjanIran · 232 kmHigh 23.5°C · Low 9.8°C · 171 mm rain a year
- BorāzjānIran · 244 kmHigh 32.7°C · Low 19.4°C · 233 mm rain a year
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 limitsWhat do the high and low temperatures mean?
We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.
How is a rain day counted?
A local calendar day (standard time, UTC+3:30, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.
Where do the numbers come from?
ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at 28.50°, 53.60° (4 km from the city centre), adjusted up by 2.1°C for the difference between the city's elevation (1,040 m) and the cell's (1,358 m). Rain comes from the 0.25° cell at 28.50°, 53.50°. These are model estimates, not weather-station readings; coast, hills and city streets can differ.
Does this page show sunshine, humidity or sea temperature?
No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.