Climate averages 1991–2020
Kaunas weather
in September.
A mild, moderately wet month: the 5th warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Kaunas: daytime highs average 16.9°C and nights cool to about 9.9°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 51 mm of rain on roughly 10 days, which makes September a moderately wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 47 min on an average September day.
The nearest other city in this atlas is Vilnius (91 km away). In September its highs average 16.7°C, about as warm as Kaunas, with 54 mm of rain.
Among the 5 cities listed in Lithuania, Kaunas ranks 1st of 5 for the warmest September highs and joint 2nd of 5 for the driest September (rainfall, lowest first). The mean September high of those 5 cities is 16.6°C; Kaunas is 0.2°C warmer than that mean.
From September to October, average highs fall by 6.5°C to 10.3°C, and monthly rainfall rises from 51 mm to 57 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
Kaunas climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -1.1°C-5.5°C | -5.5°C | 44 | 10.6 | 7.98 h |
| February | 0.0°C-5.4°C | -5.4°C | 38 | 10.1 | 9.610 h |
| March | 4.7°C-2.6°C | -2.6°C | 40 | 10.0 | 11.812 h |
| April | 11.9°C2.3°C | 2.3°C | 43 | 9.6 | 14.114 h |
| May | 17.4°C7.7°C | 7.7°C | 56 | 11.1 | 16.116 h |
| June | 20.6°C11.8°C | 11.8°C | 72 | 12.3 | 17.217 h |
| July | 22.7°C14.3°C | 14.3°C | 84 | 12.0 | 16.717 h |
| August | 22.0°C13.9°C | 13.9°C | 78 | 12.4 | 15.015 h |
| September, selected | 16.9°C9.9°C | 9.9°C | 51 | 9.7 | 12.813 h |
| October | 10.3°C4.9°C | 4.9°C | 57 | 11.0 | 10.511 h |
| November | 4.5°C0.8°C | 0.8°C | 45 | 10.4 | 8.58 h |
| December | 0.5°C-3.1°C | -3.1°C | 45 | 10.9 | 7.37 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
- Vilnius in SeptemberLithuania · 91 kmHigh 16.7°C · Low 10.0°C · 54 mm rain
- Panevėžys in SeptemberLithuania · 97 kmHigh 16.8°C · Low 10.0°C · 50 mm rain
- Šiauliai in SeptemberLithuania · 121 kmHigh 16.3°C · Low 9.3°C · 51 mm rain
- Hrodna in SeptemberBelarus · 136 kmHigh 17.1°C · Low 10.0°C · 59 mm rain
- Lida in SeptemberBelarus · 145 kmHigh 16.8°C · Low 9.8°C · 57 mm rain
- Klaipėda in SeptemberLithuania · 197 kmHigh 16.5°C · Low 11.7°C · 67 mm rain
- Daugavpils in SeptemberLatvia · 198 kmHigh 16.0°C · Low 9.7°C · 59 mm rain
- Maladziečna in SeptemberBelarus · 200 kmHigh 16.4°C · Low 9.5°C · 55 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 Kaunas) is explained once on the Kaunas year overview and on the Sources, method and limits page.