Leiden weather in September
Temperature, rain and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Good
Best time to visit: May – September
What is the weather like in Leiden in September?
In September, Leiden is mild: daytime highs average 18 °C, and nights cool down to about 13 °C. Expect around 5 hours of sunshine a day. Rain is frequent, with about 12 rainy days and 82 mm in total. All in all, September is a good month for a holiday in Leiden.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 72 | 70 | 42 |
| Day | 21° | 18° | 15° |
| Night | 15° | 13° | 10° |
| Sun | 7 h | 5 h | 4 h |
| Rain days | 14 | 12 | 15 |
More details for September
- Daylight
- 12 h 45 min07:15 – 20:00
- UV index
- 4 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 24 km/haverage daily peakAll months
- Cloud cover
- 64 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+2Europe/Amsterdam
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %38 %
- Few rainy daysweight 30 %41 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in September
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Leiden in September: quick answers
Is Leiden hot in September?
No. In September, Leiden is mild: daytime highs average 18 °C and nights drop to about 13 °C.
Does it rain much in Leiden in September?
Rain is frequent, with about 12 rainy days and 82 mm in total.
Leiden month by month
The whole year in LeidenAll destinations: NetherlandsWhere to go in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences