Climate averages 1991–2020
Tarnów weather
in September.
A mild, moderately wet month: the joint 4th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Tarnów: daytime highs average 18.7°C and nights cool to about 10.4°C. By daytime temperature it is the joint 4th warmest of the 12 months.
Expect about 73 mm of rain on roughly 11 days, which makes September a moderately wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 40 min on an average September day.
The nearest other city in this atlas is Nowy Sącz (48 km away). In September its highs average 18.2°C, 0.5°C cooler than Tarnów, with 78 mm of rain.
Among the 60 cities listed in Poland, Tarnów ranks joint 11th of 60 for the warmest September highs and joint 51st of 60 for the driest September (rainfall, lowest first). The mean September high of those 60 cities is 18.3°C; Tarnów is 0.4°C warmer than that mean.
From September to October, average highs fall by 5.5°C to 13.2°C, and monthly rainfall falls from 73 mm to 59 mm.
The annual picture
September in context
Monthly precipitation
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
Tarnów climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 1.0°C-4.8°C | -4.8°C | 46 | 11.1 | 8.69 h |
| February | 2.9°C-4.1°C | -4.1°C | 45 | 10.6 | 10.010 h |
| March | 7.7°C-1.0°C | -1.0°C | 50 | 11.1 | 11.812 h |
| April | 14.0°C3.9°C | 3.9°C | 60 | 11.2 | 13.714 h |
| May | 18.7°C9.0°C | 9.0°C | 89 | 14.1 | 15.415 h |
| June | 21.9°C12.9°C | 12.9°C | 86 | 12.9 | 16.316 h |
| July | 23.9°C14.9°C | 14.9°C | 104 | 14.3 | 15.916 h |
| August | 23.9°C14.5°C | 14.5°C | 70 | 11.3 | 14.514 h |
| September, selected | 18.7°C10.4°C | 10.4°C | 73 | 11.1 | 12.713 h |
| October | 13.2°C5.9°C | 5.9°C | 59 | 10.1 | 10.811 h |
| November | 7.3°C1.6°C | 1.6°C | 48 | 10.3 | 9.19 h |
| December | 2.3°C-2.8°C | -2.8°C | 44 | 10.6 | 8.28 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet 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
September in nearby cities
- Nowy Sącz in SeptemberPoland · 48 kmHigh 18.2°C · Low 9.8°C · 78 mm rain
- Rzeszów in SeptemberPoland · 72 kmHigh 18.5°C · Low 10.8°C · 78 mm rain
- Kraków in SeptemberPoland · 75 kmHigh 18.6°C · Low 10.1°C · 73 mm rain
- Kielce in SeptemberPoland · 99 kmHigh 18.1°C · Low 10.1°C · 63 mm rain
- Ostrowiec Świętokrzyski in SeptemberPoland · 106 kmHigh 18.5°C · Low 10.6°C · 64 mm rain
- Prešov in SeptemberSlovakia · 114 kmHigh 18.9°C · Low 10.2°C · 65 mm rain
- Jaworzno in SeptemberPoland · 124 kmHigh 18.1°C · Low 10.0°C · 70 mm rain
- Mysłowice in SeptemberPoland · 132 kmHigh 18.5°C · Low 10.4°C · 70 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 Tarnów) is explained once on the Tarnów year overview and on the Sources, method and limits page.