Climate averages 1991–2020
Hamadān weather
in January.
A cold, moderately wet month: the coolest and the joint 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a cold month in Hamadān: daytime highs average 3.6°C and nights cool to about -4.6°C. By daytime temperature it is the coolest month of the year.
Expect about 48 mm of rain on roughly 9 days, which makes January a moderately wet month (the joint 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 06 min on an average January day.
The nearest other city in this atlas is Malāyer (62 km away). In January its highs average 3.2°C, about as warm as Hamadān, with 48 mm of rain.
Among the 128 cities listed in Iran, Hamadān ranks 104th of 128 for the warmest January highs and joint 78th of 128 for the driest January (rainfall, lowest first). The mean January high of those 128 cities is 8.6°C; Hamadān is 5.0°C cooler than that mean.
From January to February, average highs rise by 1.9°C to 5.5°C, and monthly rainfall rises from 48 mm to 55 mm.
The annual picture
January 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, selected | 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 | 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
January in nearby cities
- Malāyer in JanuaryIran · 62 kmHigh 3.2°C · Low -6.5°C · 48 mm rain
- Nahāvand in JanuaryIran · 69 kmHigh 3.5°C · Low -5.8°C · 64 mm rain
- Qorveh in JanuaryIran · 76 kmHigh 1.9°C · Low -7.9°C · 37 mm precipitation
- Borūjerd in JanuaryIran · 103 kmHigh 3.3°C · Low -4.8°C · 71 mm rain
- Arāk in JanuaryIran · 134 kmHigh 5.1°C · Low -6.3°C · 32 mm rain
- Kermanshah in JanuaryIran · 143 kmHigh 6.4°C · Low -2.6°C · 74 mm rain
- Khorramabad in JanuaryIran · 147 kmHigh 7.1°C · Low -2.6°C · 96 mm rain
- Sanandaj in JanuaryIran · 149 kmHigh 2.0°C · Low -6.9°C · 64 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.