Climate averages 1991–2020
Graz weather
in December.
A cold, moderately wet month: the 11th warmest and the joint 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cold month in Graz: daytime highs average 3.6°C and nights cool to about -4.0°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 45 mm of rain on roughly 8 days, which makes December a moderately wet month (the joint 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 8 h 35 min on an average December day.
The nearest other city in this atlas is Maribor (59 km away). In December its highs average 4.8°C, 1.2°C warmer than Graz, with 62 mm of rain.
Among the 6 cities listed in Austria, Graz ranks joint 5th of 6 for the warmest December highs and 2nd of 6 for the driest December (rainfall, lowest first). The mean December high of those 6 cities is 3.9°C; Graz is 0.2°C cooler than that mean.
From December to January, average highs fall by 0.3°C to 3.4°C, and monthly rainfall falls from 45 mm to 27 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
Graz climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 3.4°C-5.3°C | -5.3°C | 27 | 6.2 | 9.09 h |
| February | 5.6°C-4.3°C | -4.3°C | 33 | 7.0 | 10.210 h |
| March | 10.0°C-0.6°C | -0.6°C | 45 | 8.4 | 11.912 h |
| April | 15.0°C3.6°C | 3.6°C | 54 | 9.9 | 13.614 h |
| May | 19.0°C8.3°C | 8.3°C | 85 | 13.0 | 15.015 h |
| June | 22.6°C11.9°C | 11.9°C | 90 | 13.5 | 15.816 h |
| July | 24.4°C13.8°C | 13.8°C | 84 | 12.8 | 15.515 h |
| August | 24.0°C13.8°C | 13.8°C | 89 | 11.8 | 14.214 h |
| September | 19.2°C9.7°C | 9.7°C | 83 | 10.1 | 12.613 h |
| October | 14.3°C5.4°C | 5.4°C | 64 | 9.3 | 10.911 h |
| November | 8.6°C1.2°C | 1.2°C | 59 | 8.5 | 9.49 h |
| December, selected | 3.6°C-4.0°C | -4.0°C | 45 | 7.8 | 8.69 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
- Maribor in DecemberSlovenia · 59 kmHigh 4.8°C · Low -1.9°C · 62 mm rain
- Szombathely in DecemberHungary · 91 kmHigh 3.8°C · Low -2.1°C · 41 mm rain
- Klagenfurt am Wörthersee in DecemberAustria · 99 kmHigh 3.6°C · Low -2.8°C · 80 mm rain
- Ljubljana in DecemberSlovenia · 134 kmHigh 4.3°C · Low -1.9°C · 90 mm rain
- Vienna in DecemberAustria · 145 kmHigh 3.8°C · Low -1.7°C · 38 mm rain
- Zagreb in DecemberCroatia · 145 kmHigh 5.1°C · Low -1.2°C · 68 mm rain
- Linz in DecemberAustria · 163 kmHigh 3.9°C · Low -1.6°C · 57 mm rain
- Bratislava in DecemberSlovakia · 173 kmHigh 3.6°C · Low -1.7°C · 40 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 Graz) is explained once on the Graz year overview and on the Sources, method and limits page.