Isaszeg weather in September
Averages, precipitation and records for every September since 2000
What is September like in Isaszeg?
In September, daytime highs in Isaszeg average 21.5 °C and night-time lows 12.6 °C, giving a monthly mean of 17.0 °C. Expect about 63 mm of precipitation on 8 wet days.
September is the 4th warmest month of the year here: 5.2 °C cooler than August and 5.5 °C warmer than October.
An average September brings 0.6 hot days (30 °C or more), 6.7 summer days (25 °C or more).
Compared with the September average of Hungarian towns (17.3 °C), Isaszeg is 0.3 °C cooler — the 252nd warmest of 348.
The warmest September was in 2023 (20.4 °C), the coolest in 2001 (14.2 °C). The wettest was 2010 (144 mm), the driest 2011 (11 mm). September in 2016–2025 averaged 17.8 °C, compared with 16.2 °C in 2000–2009 (+1.6 °C).
September records: 33.0 °C (7 September 2008) and 3.9 °C (26 September 2018). The average topsoil temperature (0–7 cm) is 18.1 °C.
Planning a trip? Check the 7-day forecast for Isaszeg and the current weather. See also the full climate of Isaszeg and Hungary in September.
September mean temperature by year
Red: warmer than the average (17.0 °C), blue: cooler.
September precipitation by year
Monthly total (mm).
Every September in Isaszeg, 2000–2025
Highlighted: the warmest and the coolest year. Click a year for its daily data.
| Year | Mean | Highest | Lowest | Precip. |
|---|---|---|---|---|
| September 2025 | 18.6 °C | 29.6 °C | 6.7 °C | 55 mm |
| September 2024 | 18.3 °C | 32.2 °C | 7.1 °C | 93 mm |
| September 2023 | 20.4 °C | 30.0 °C | 11.2 °C | 56 mm |
| September 2022 | 15.7 °C | 27.7 °C | 5.6 °C | 104 mm |
| September 2021 | 17.5 °C | 28.5 °C | 6.4 °C | 50 mm |
| September 2020 | 18.6 °C | 29.1 °C | 8.1 °C | 56 mm |
| September 2019 | 17.1 °C | 31.0 °C | 6.1 °C | 55 mm |
| September 2018 | 17.9 °C | 29.9 °C | 3.9 °C | 48 mm |
| September 2017 | 15.9 °C | 30.8 °C | 5.9 °C | 124 mm |
| September 2016 | 18.1 °C | 28.2 °C | 6.6 °C | 36 mm |
| September 2015 | 18.0 °C | 31.7 °C | 8.6 °C | 97 mm |
| September 2014 | 17.0 °C | 27.1 °C | 5.6 °C | 124 mm |
| September 2013 | 14.9 °C | 24.6 °C | 7.0 °C | 37 mm |
| September 2012 | 19.4 °C | 31.2 °C | 6.7 °C | 57 mm |
| September 2011 | 19.7 °C | 29.8 °C | 9.2 °C | 11 mm |
| September 2010 | 14.4 °C | 21.7 °C | 6.4 °C | 144 mm |
| September 2009 | 18.9 °C | 29.8 °C | 10.0 °C | 24 mm |
| September 2008 | 15.5 °C | 33.0 °C | 5.4 °C | 52 mm |
| September 2007 | 14.6 °C | 25.7 °C | 6.0 °C | 60 mm |
| September 2006 | 18.1 °C | 27.1 °C | 9.5 °C | 21 mm |
| September 2005 | 16.8 °C | 26.5 °C | 9.7 °C | 56 mm |
| September 2004 | 16.0 °C | 26.7 °C | 7.3 °C | 31 mm |
| September 2003 | 16.7 °C | 27.9 °C | 8.6 °C | 31 mm |
| September 2002 | 15.5 °C | 27.2 °C | 7.1 °C | 47 mm |
| September 2001 | 14.2 °C | 23.6 °C | 5.8 °C | 112 mm |
| September 2000 | 15.4 °C | 26.1 °C | 6.8 °C | 51 mm |
September in nearby towns
| Town | Avg high | Avg low | Precip. | Wet days |
|---|---|---|---|---|
| Isaszeg | 21.5 °C | 12.6 °C | 63 mm | 8 |
| Abony | 22.7 °C | 13.6 °C | 61 mm | 9 |
| Albertirsa | 22.0 °C | 13.3 °C | 63 mm | 9 |
| Aszód | 21.7 °C | 12.4 °C | 62 mm | 8 |
| Biatorbágy | 21.2 °C | 12.3 °C | 64 mm | 9 |
| Budakalász | 21.1 °C | 12.2 °C | 65 mm | 9 |
| Budakeszi | 21.1 °C | 12.3 °C | 64 mm | 9 |
| Budaörs | 21.4 °C | 12.5 °C | 64 mm | 9 |
| Cegléd | 22.4 °C | 13.4 °C | 62 mm | 9 |
Other months in Isaszeg
Frequently asked questions
What is the weather like in Isaszeg in September?
Average highs of 21.5 °C and lows of 12.6 °C, with about 63 mm of precipitation on 8 wet days.
How hot does it get in Isaszeg in September?
The September record is 33.0 °C (7 September 2008); there are 0.6 days of 30 °C or more in an average September.
How much does it rain in Isaszeg in September?
63 mm on average; the wettest September (2010) brought 144 mm.
What was the warmest September in Isaszeg?
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.