Climate averages 1991–2020
Leiden weather
in May.
A mild, moderately wet month: the 5th warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in Leiden: daytime highs average 15.8°C and nights cool to about 9.6°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 58 mm of rain on roughly 10 days, which makes May a moderately wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 40 min on an average May day.
The nearest other city in this atlas is Zoetermeer (11 km away). In May its highs average 16.4°C, 0.6°C warmer than Leiden, with 61 mm of rain.
Among the 44 cities listed in the Netherlands, Leiden ranks joint 38th of 44 for the warmest May highs and joint 7th of 44 for the driest May (rainfall, lowest first). The mean May high of those 44 cities is 16.9°C; Leiden is 1.1°C cooler than that mean.
From May to June, average highs rise by 2.6°C to 18.4°C, and monthly rainfall rises from 58 mm to 61 mm.
The annual picture
May 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, selected | 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 | 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
May in nearby cities
- Zoetermeer in MayThe Netherlands · 11 kmHigh 16.4°C · Low 9.4°C · 61 mm rain
- Alphen aan den Rijn in MayThe Netherlands · 12 kmHigh 16.7°C · Low 9.2°C · 62 mm rain
- The Hague in MayThe Netherlands · 16 kmHigh 15.7°C · Low 9.6°C · 57 mm rain
- Delft in MayThe Netherlands · 19 kmHigh 16.4°C · Low 9.4°C · 57 mm rain
- Hoofddorp in MayThe Netherlands · 21 kmHigh 15.8°C · Low 9.7°C · 62 mm rain
- Gouda in MayThe Netherlands · 22 kmHigh 16.9°C · Low 9.3°C · 65 mm rain
- Rotterdam in MayThe Netherlands · 26 kmHigh 17.0°C · Low 9.2°C · 61 mm rain
- Haarlem in MayThe Netherlands · 27 kmHigh 15.3°C · Low 9.8°C · 58 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.