Climate averages 1991–2020
Isfahan weather
in December.
A cool, very dry month: the 11th warmest and the joint 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cool month in Isfahan: daytime highs average 10.2°C and nights cool to about -1.5°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 12 mm of rain on roughly 3 days, which makes December a very dry month (the joint 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 03 min on an average December day.
The nearest other city in this atlas is Khomeynī Shahr (13 km away). In December its highs average 10.5°C, about as warm as Isfahan, with 14 mm of rain.
Among the 128 cities listed in Iran, Isfahan ranks joint 57th of 128 for the warmest December highs and joint 4th of 128 for the driest December (rainfall, lowest first). The mean December high of those 128 cities is 10.9°C; Isfahan is 0.7°C cooler than that mean.
From December to January, average highs fall by 1.8°C to 8.4°C, and monthly rainfall rises from 12 mm to 15 mm.
The annual picture
December 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
Isfahan climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.4°C-3.4°C | -3.4°C | 15 | 3.2 | 10.310 h |
| February | 12.1°C-1.6°C | -1.6°C | 12 | 2.8 | 11.011 h |
| March | 17.3°C2.3°C | 2.3°C | 15 | 3.4 | 12.012 h |
| April | 23.2°C8.2°C | 8.2°C | 9.8 | 3.0 | 13.013 h |
| May | 28.8°C13.5°C | 13.5°C | 7.1 | 1.9 | 13.814 h |
| June | 34.4°C18.6°C | 18.6°C | 0.8 | 0.3 | 14.314 h |
| July | 36.9°C21.8°C | 21.8°C | 0.2 | 0.1 | 14.114 h |
| August | 35.5°C20.4°C | 20.4°C | 0 | 0.0 | 13.413 h |
| September | 31.3°C15.5°C | 15.5°C | 0.2 | 0.1 | 12.412 h |
| October | 24.4°C9.6°C | 9.6°C | 2.6 | 0.7 | 11.411 h |
| November | 15.7°C3.0°C | 3.0°C | 15 | 2.5 | 10.511 h |
| December, selected | 10.2°C-1.5°C | -1.5°C | 12 | 3.0 | 10.010 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
December in nearby cities
- Khomeynī Shahr in DecemberIran · 13 kmHigh 10.5°C · Low -2.1°C · 14 mm rain
- Bahārestān in DecemberIran · 20 kmHigh 10.8°C · Low -1.9°C · 13 mm rain
- Shāhīn Shahr in DecemberIran · 26 kmHigh 9.8°C · Low -0.6°C · 14 mm rain
- Najafābād in DecemberIran · 29 kmHigh 10.4°C · Low -2.7°C · 19 mm rain
- Fūlād Shahr in DecemberIran · 32 kmHigh 10.5°C · Low -2.8°C · 14 mm rain
- Shahreẕā in DecemberIran · 74 kmHigh 10.2°C · Low -1.8°C · 18 mm rain
- Shahr-e Kord in DecemberIran · 85 kmHigh 6.8°C · Low -5.2°C · 56 mm rain
- Kashan in DecemberIran · 150 kmHigh 10.9°C · Low 2.9°C · 25 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 Isfahan) is explained once on the Isfahan year overview and on the Sources, method and limits page.