Climate averages 1991–2020
Hamadān weather
in December.
A cold, moderately wet month: the 10th warmest and the joint 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cold month in Hamadān: daytime highs average 7.0°C and nights cool to about -1.3°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 48 mm of rain on roughly 8 days, which makes December a moderately wet month (the joint 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 52 min on an average December day.
The nearest other city in this atlas is Malāyer (62 km away). In December its highs average 6.7°C, about as warm as Hamadān, with 47 mm of rain.
Among the 128 cities listed in Iran, Hamadān ranks joint 98th of 128 for the warmest December highs and joint 85th of 128 for the driest December (rainfall, lowest first). The mean December high of those 128 cities is 10.9°C; Hamadān is 4.0°C cooler than that mean.
From December to January, average highs fall by 3.4°C to 3.6°C, and monthly rainfall stays at 48 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
Hamadān climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 3.6°C-4.6°C | -4.6°C | 48 | 9.0 | 10.110 h |
| February | 5.5°C-3.3°C | -3.3°C | 55 | 9.8 | 10.911 h |
| March | 11.4°C1.1°C | 1.1°C | 77 | 12.0 | 11.912 h |
| April | 17.6°C6.3°C | 6.3°C | 69 | 13.2 | 13.013 h |
| May | 23.8°C11.9°C | 11.9°C | 39 | 9.3 | 14.014 h |
| June | 30.9°C17.5°C | 17.5°C | 4.9 | 1.5 | 14.414 h |
| July | 34.9°C20.9°C | 20.9°C | 1.6 | 0.5 | 14.214 h |
| August | 34.4°C20.8°C | 20.8°C | 1.4 | 0.6 | 13.513 h |
| September | 29.4°C16.6°C | 16.6°C | 2.0 | 0.7 | 12.412 h |
| October | 21.9°C10.6°C | 10.6°C | 26 | 5.8 | 11.311 h |
| November | 12.8°C3.5°C | 3.5°C | 49 | 8.2 | 10.410 h |
| December, selected | 7.0°C-1.3°C | -1.3°C | 48 | 7.8 | 9.910 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
- Malāyer in DecemberIran · 62 kmHigh 6.7°C · Low -3.0°C · 47 mm rain
- Nahāvand in DecemberIran · 69 kmHigh 7.1°C · Low -2.4°C · 62 mm rain
- Qorveh in DecemberIran · 76 kmHigh 5.5°C · Low -4.4°C · 34 mm rain
- Borūjerd in DecemberIran · 103 kmHigh 7.3°C · Low -1.2°C · 67 mm rain
- Arāk in DecemberIran · 134 kmHigh 8.3°C · Low -3.1°C · 31 mm rain
- Kermanshah in DecemberIran · 143 kmHigh 9.1°C · Low -0.1°C · 64 mm rain
- Khorramabad in DecemberIran · 147 kmHigh 10.6°C · Low 0.5°C · 88 mm rain
- Sanandaj in DecemberIran · 149 kmHigh 6.1°C · Low -3.2°C · 57 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 Hamadān) is explained once on the Hamadān year overview and on the Sources, method and limits page.