Climate averages 1991–2020
Bīrjand weather
in December.
A cool, fairly dry month: the 10th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cool month in Bīrjand: daytime highs average 12.3°C and nights cool to about 1.1°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 22 mm of rain on roughly 5 days, which makes December a fairly dry month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 02 min on an average December day.
The nearest other city in this atlas is Torbat-e Ḩeydarīyeh (268 km away). In December its highs average 8.7°C, 3.6°C cooler than Bīrjand, with 17 mm of rain.
Among the 128 cities listed in Iran, Bīrjand ranks 43rd of 128 for the warmest December highs and joint 23rd of 128 for the driest December (rainfall, lowest first). The mean December high of those 128 cities is 10.9°C; Bīrjand is 1.3°C warmer than that mean.
From December to January, average highs fall by 2.6°C to 9.7°C, and monthly rainfall rises from 22 mm to 37 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
Bīrjand climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 9.7°C-1.1°C | -1.1°C | 37 | 6.9 | 10.210 h |
| February | 12.0°C0.7°C | 0.7°C | 45 | 7.8 | 11.011 h |
| March | 17.2°C4.9°C | 4.9°C | 45 | 7.8 | 12.012 h |
| April | 23.9°C10.0°C | 10.0°C | 20 | 4.6 | 13.013 h |
| May | 29.7°C14.7°C | 14.7°C | 5.7 | 1.7 | 13.814 h |
| June | 33.7°C18.7°C | 18.7°C | 0.6 | 0.2 | 14.314 h |
| July | 34.0°C20.3°C | 20.3°C | 0.1 | 0.0 | 14.114 h |
| August | 32.5°C18.0°C | 18.0°C | 0.3 | 0.1 | 13.413 h |
| September | 29.9°C13.8°C | 13.8°C | 0.6 | 0.2 | 12.412 h |
| October | 24.7°C10.2°C | 10.2°C | 3.0 | 0.7 | 11.411 h |
| November | 17.3°C5.0°C | 5.0°C | 10 | 2.8 | 10.511 h |
| December, selected | 12.3°C1.1°C | 1.1°C | 22 | 4.6 | 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
- Torbat-e Ḩeydarīyeh in DecemberIran · 268 kmHigh 8.7°C · Low -0.4°C · 17 mm rain
- Kāshmar in DecemberIran · 273 kmHigh 10.1°C · Low 0.9°C · 15 mm rain
- Zābol in DecemberIran · 296 kmHigh 16.0°C · Low 3.6°C · 7.3 mm rain
- Herāt in DecemberAfghanistan · 321 kmHigh 12.2°C · Low -0.1°C · 28 mm rain
- Marāgheh (Razavi Khorasan), Iran in DecemberIran · 332 kmHigh 7.7°C · Low -2.1°C · 23 mm rain
- Kerman in DecemberIran · 352 kmHigh 13.4°C · Low 2.6°C · 14 mm rain
- Neyshābūr in DecemberIran · 374 kmHigh 9.2°C · Low -1.2°C · 23 mm rain
- Mashhad in DecemberIran · 383 kmHigh 9.8°C · Low -1.5°C · 20 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 Bīrjand) is explained once on the Bīrjand year overview and on the Sources, method and limits page.