Climate averages 1991–2020
Shiraz weather
in December.
A cool, moderately wet 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 Shiraz: daytime highs average 13.7°C and nights cool to about 4.1°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 69 mm of rain on roughly 5 days, which makes December a moderately wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 17 min on an average December day.
The nearest other city in this atlas is Shahr-e Ṣadrā (21 km away). In December its highs average 11.5°C, 2.2°C cooler than Shiraz, with 58 mm of rain.
Among the 128 cities listed in Iran, Shiraz ranks 33rd of 128 for the warmest December highs and 102nd of 128 for the driest December (rainfall, lowest first). The mean December high of those 128 cities is 10.9°C; Shiraz is 2.8°C warmer than that mean.
From December to January, average highs fall by 3.0°C to 10.7°C, and monthly rainfall rises from 69 mm to 98 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
Shiraz climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 10.7°C1.0°C | 1.0°C | 98 | 7.5 | 10.510 h |
| February | 13.2°C2.7°C | 2.7°C | 71 | 6.9 | 11.111 h |
| March | 17.4°C6.0°C | 6.0°C | 75 | 7.6 | 12.012 h |
| April | 23.1°C11.1°C | 11.1°C | 36 | 5.7 | 12.913 h |
| May | 30.0°C16.8°C | 16.8°C | 7.6 | 2.2 | 13.614 h |
| June | 35.4°C21.4°C | 21.4°C | 0.4 | 0.1 | 14.014 h |
| July | 37.2°C23.8°C | 23.8°C | 0.7 | 0.2 | 13.814 h |
| August | 36.1°C23.4°C | 23.4°C | 0.8 | 0.2 | 13.213 h |
| September | 32.4°C20.0°C | 20.0°C | 0.5 | 0.2 | 12.412 h |
| October | 26.5°C15.2°C | 15.2°C | 3.3 | 1.0 | 11.511 h |
| November | 18.8°C8.8°C | 8.8°C | 34 | 4.1 | 10.711 h |
| December, selected | 13.7°C4.1°C | 4.1°C | 69 | 5.2 | 10.310 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
- Shahr-e Ṣadrā in DecemberIran · 21 kmHigh 11.5°C · Low 0.3°C · 58 mm rain
- Marvdasht in DecemberIran · 39 kmHigh 13.1°C · Low -0.3°C · 45 mm rain
- Kāzerūn in DecemberIran · 85 kmHigh 17.0°C · Low 7.5°C · 80 mm rain
- Fasā in DecemberIran · 132 kmHigh 15.5°C · Low 4.4°C · 36 mm rain
- Borāzjān in DecemberIran · 133 kmHigh 21.5°C · Low 10.8°C · 58 mm rain
- Yasuj in DecemberIran · 149 kmHigh 9.9°C · Low -1.4°C · 133 mm rain
- Jahrom in DecemberIran · 159 kmHigh 18.3°C · Low 7.7°C · 45 mm rain
- Bushehr in DecemberIran · 179 kmHigh 20.4°C · Low 15.8°C · 71 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 Shiraz) is explained once on the Shiraz year overview and on the Sources, method and limits page.