Climate averages 1991–2020
Leiden weather
in July.
A mild, moderately wet month: the 2nd warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a mild month in Leiden: daytime highs average 20.6°C and nights cool to about 14.8°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 77 mm of rain on roughly 12 days, which makes July a moderately wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 16 h 15 min on an average July day.
The nearest other city in this atlas is Zoetermeer (11 km away). In July its highs average 21.2°C, 0.5°C warmer than Leiden, with 79 mm of rain.
Among the 44 cities listed in the Netherlands, Leiden ranks 37th of 44 for the warmest July highs and joint 10th of 44 for the driest July (rainfall, lowest first). The mean July high of those 44 cities is 21.6°C; Leiden is 1.0°C cooler than that mean.
From July to August, average highs rise by 0.2°C to 20.8°C, and monthly rainfall rises from 77 mm to 90 mm.
The annual picture
July in context
Monthly rainfall
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
Leiden climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 6.0°C2.3°C | 2.3°C | 72 | 13.6 | 8.38 h |
| February | 6.4°C2.1°C | 2.1°C | 57 | 11.6 | 9.910 h |
| March | 9.0°C3.7°C | 3.7°C | 54 | 11.3 | 11.812 h |
| April | 12.5°C6.0°C | 6.0°C | 45 | 10.1 | 13.914 h |
| May | 15.8°C9.6°C | 9.6°C | 58 | 10.4 | 15.716 h |
| June | 18.4°C12.4°C | 12.4°C | 61 | 11.0 | 16.717 h |
| July, selected | 20.6°C14.8°C | 14.8°C | 77 | 12.4 | 16.216 h |
| August | 20.8°C15.1°C | 15.1°C | 90 | 13.3 | 14.715 h |
| September | 18.0°C12.9°C | 12.9°C | 87 | 13.0 | 12.713 h |
| October | 14.1°C9.6°C | 9.6°C | 93 | 14.0 | 10.711 h |
| November | 9.8°C6.1°C | 6.1°C | 83 | 15.3 | 8.99 h |
| December | 6.7°C3.3°C | 3.3°C | 84 | 14.6 | 7.88 h |
Rainfall is the average of the 30 separate monthly totals. A rain 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
July in nearby cities
- Zoetermeer in JulyThe Netherlands · 11 kmHigh 21.2°C · Low 14.6°C · 79 mm rain
- Alphen aan den Rijn in JulyThe Netherlands · 12 kmHigh 21.4°C · Low 14.4°C · 83 mm rain
- The Hague in JulyThe Netherlands · 16 kmHigh 20.5°C · Low 14.9°C · 73 mm rain
- Delft in JulyThe Netherlands · 19 kmHigh 21.1°C · Low 14.7°C · 73 mm rain
- Hoofddorp in JulyThe Netherlands · 21 kmHigh 20.5°C · Low 14.9°C · 83 mm rain
- Gouda in JulyThe Netherlands · 22 kmHigh 21.6°C · Low 14.4°C · 86 mm rain
- Rotterdam in JulyThe Netherlands · 26 kmHigh 21.7°C · Low 14.4°C · 79 mm rain
- Haarlem in JulyThe Netherlands · 27 kmHigh 20.0°C · Low 15.1°C · 79 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 Leiden) is explained once on the Leiden year overview and on the Sources, method and limits page.