Siófok weather in September
Averages, precipitation and records for every September since 2000
What is September like in Siófok?
In September, daytime highs in Siófok average 21.6 °C and night-time lows 13.2 °C, giving a monthly mean of 17.3 °C. Expect about 70 mm of precipitation on 9 wet days.
September is the 4th warmest month of the year here: 5.2 °C cooler than August and 5.2 °C warmer than October.
An average September brings 0.6 hot days (30 °C or more), 6.9 summer days (25 °C or more).
The warmest September was in 2023 (20.4 °C), the coolest in 2001 (14.6 °C). The wettest was 2010 (175 mm), the driest 2009 (14 mm). September in 2016–2025 averaged 18.1 °C, compared with 16.6 °C in 2000–2009 (+1.5 °C).
September records: 33.1 °C (7 September 2008) and 4.6 °C (26 September 2018). The average topsoil temperature (0–7 cm) is 18.0 °C.
Planning a trip? Check the 7-day forecast for Siófok and the current weather. See also the full climate of Siófok and Hungary in September.
September mean temperature by year
Red: warmer than the average (17.3 °C), blue: cooler.
September precipitation by year
Monthly total (mm).
Every September in Siófok, 2000–2025
Highlighted: the warmest and the coolest year. Click a year for its daily data.
| Year | Mean | Highest | Lowest | Precip. |
|---|---|---|---|---|
| September 2025 | 18.5 °C | 27.6 °C | 7.2 °C | 48 mm |
| September 2024 | 18.2 °C | 33.0 °C | 8.2 °C | 134 mm |
| September 2023 | 20.4 °C | 29.0 °C | 12.3 °C | 40 mm |
| September 2022 | 16.2 °C | 27.7 °C | 5.9 °C | 160 mm |
| September 2021 | 17.9 °C | 29.8 °C | 7.3 °C | 66 mm |
| September 2020 | 18.5 °C | 28.1 °C | 7.3 °C | 49 mm |
| September 2019 | 18.0 °C | 31.6 °C | 7.8 °C | 49 mm |
| September 2018 | 17.9 °C | 27.8 °C | 4.6 °C | 84 mm |
| September 2017 | 16.1 °C | 30.0 °C | 8.2 °C | 101 mm |
| September 2016 | 19.1 °C | 28.2 °C | 9.4 °C | 31 mm |
| September 2015 | 17.8 °C | 31.6 °C | 8.6 °C | 64 mm |
| September 2014 | 16.9 °C | 25.1 °C | 8.3 °C | 119 mm |
| September 2013 | 15.8 °C | 25.9 °C | 7.7 °C | 71 mm |
| September 2012 | 19.0 °C | 30.1 °C | 8.0 °C | 47 mm |
| September 2011 | 19.8 °C | 30.4 °C | 9.6 °C | 27 mm |
| September 2010 | 14.8 °C | 22.4 °C | 7.6 °C | 175 mm |
| September 2009 | 19.4 °C | 29.9 °C | 10.1 °C | 14 mm |
| September 2008 | 15.9 °C | 33.1 °C | 5.8 °C | 64 mm |
| September 2007 | 14.9 °C | 25.5 °C | 6.6 °C | 62 mm |
| September 2006 | 18.1 °C | 28.3 °C | 10.1 °C | 26 mm |
| September 2005 | 17.1 °C | 27.1 °C | 9.9 °C | 58 mm |
| September 2004 | 16.4 °C | 25.7 °C | 8.0 °C | 33 mm |
| September 2003 | 17.0 °C | 28.1 °C | 7.4 °C | 33 mm |
| September 2002 | 16.0 °C | 27.5 °C | 6.7 °C | 51 mm |
| September 2001 | 14.6 °C | 25.0 °C | 6.4 °C | 152 mm |
| September 2000 | 16.4 °C | 26.6 °C | 8.2 °C | 73 mm |
September in nearby towns
| Town | Avg high | Avg low | Precip. | Wet days |
|---|---|---|---|---|
| Siófok | 21.6 °C | 13.2 °C | 70 mm | 9 |
| Balatonboglár | 21.2 °C | 14.9 °C | 73 mm | 9 |
| Balatonföldvár | 21.2 °C | 14.2 °C | 72 mm | 9 |
| Balatonlelle | 21.3 °C | 13.9 °C | 72 mm | 9 |
| Barcs | 22.2 °C | 13.0 °C | 80 mm | 10 |
| Csurgó | 21.8 °C | 13.3 °C | 88 mm | 10 |
| Fonyód | 21.6 °C | 13.6 °C | 75 mm | 9 |
| Igal | 21.7 °C | 13.0 °C | 77 mm | 9 |
| Kadarkút | 21.8 °C | 13.1 °C | 82 mm | 10 |
Other months in Siófok
Frequently asked questions
What is the weather like in Siófok in September?
Average highs of 21.6 °C and lows of 13.2 °C, with about 70 mm of precipitation on 9 wet days.
How hot does it get in Siófok in September?
The September record is 33.1 °C (7 September 2008); there are 0.6 days of 30 °C or more in an average September.
How much does it rain in Siófok in September?
70 mm on average; the wettest September (2010) brought 175 mm.
What was the warmest September in Siófok?
2023, with a mean of 20.4 °C (data 2000–2025).
Source: Meteon's own daily dataset built from the ERA5-Land reanalysis (Copernicus / ECMWF), 2000–2025, about 9 km grid resolution. Values describe the town's surroundings and can differ slightly from a single weather station. Hot day: maximum ≥ 30 °C; summer day: ≥ 25 °C; frost day: minimum < 0 °C; wet day: ≥ 1 mm.