Climate averages 1991–2020
Fasā weather
in December.
A mild, 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 mild month in Fasā: daytime highs average 15.5°C and nights cool to about 4.4°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 36 mm of rain on roughly 4 days, which makes December a fairly dry month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 20 min on an average December day.
The nearest other city in this atlas is Jahrom (49 km away). In December its highs average 18.3°C, 2.8°C warmer than Fasā, with 45 mm of rain.
Among the 128 cities listed in Iran, Fasā ranks 25th of 128 for the warmest December highs and joint 52nd of 128 for the driest December (rainfall, lowest first). The mean December high of those 128 cities is 10.9°C; Fasā is 4.6°C warmer than that mean.
From December to January, average highs fall by 2.7°C to 12.8°C, and monthly rainfall rises from 36 mm to 51 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
Fasā climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 12.8°C2.7°C | 2.7°C | 51 | 5.7 | 10.511 h |
| February | 15.1°C4.4°C | 4.4°C | 45 | 5.2 | 11.211 h |
| March | 19.4°C7.6°C | 7.6°C | 47 | 5.8 | 12.012 h |
| April | 25.5°C12.5°C | 12.5°C | 15 | 3.2 | 12.813 h |
| May | 32.3°C17.7°C | 17.7°C | 3.0 | 0.8 | 13.614 h |
| June | 36.9°C21.7°C | 21.7°C | 0.3 | 0.1 | 14.014 h |
| July | 38.2°C24.2°C | 24.2°C | 1.3 | 0.3 | 13.814 h |
| August | 37.2°C23.0°C | 23.0°C | 1.9 | 0.5 | 13.213 h |
| September | 33.7°C19.2°C | 19.2°C | 0.3 | 0.1 | 12.412 h |
| October | 28.0°C14.2°C | 14.2°C | 1.0 | 0.3 | 11.511 h |
| November | 20.3°C8.5°C | 8.5°C | 13 | 2.2 | 10.711 h |
| December, selected | 15.5°C4.4°C | 4.4°C | 36 | 3.5 | 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
- Jahrom in DecemberIran · 49 kmHigh 18.3°C · Low 7.7°C · 45 mm rain
- Dārāb in DecemberIran · 89 kmHigh 16.9°C · Low 5.6°C · 39 mm rain
- Shiraz in DecemberIran · 132 kmHigh 13.7°C · Low 4.1°C · 69 mm rain
- Marvdasht in DecemberIran · 132 kmHigh 13.1°C · Low -0.3°C · 45 mm rain
- Shahr-e Ṣadrā in DecemberIran · 147 kmHigh 11.5°C · Low 0.3°C · 58 mm rain
- Sirjan in DecemberIran · 205 kmHigh 13.2°C · Low 1.1°C · 26 mm rain
- Kāzerūn in DecemberIran · 208 kmHigh 17.0°C · Low 7.5°C · 80 mm rain
- Borāzjān in DecemberIran · 239 kmHigh 21.5°C · Low 10.8°C · 58 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 Fasā) is explained once on the Fasā year overview and on the Sources, method and limits page.