Climate averages 1991–2020
Schiedam weather
by month.
See how the year changes. July has the highest average daily maximum; April has the lowest average monthly rainfall.
Long-term climate patterns, not a forecast for a particular trip.
Across the year Schiedam averages a daytime high of 13.7°C and a nighttime low of 7.8°C, with about 772 mm of rain on roughly 146 days. July is the warmest month (average high 21.6°C) and January the coolest (6.0°C). July (tied with August) is the wettest month with 79 mm; April is the driest with 48 mm.
The annual picture
A year in Schiedam
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
Schiedam climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 6.0°C1.9°C | 1.9°C | 62 | 12.2 | 8.38 h |
| February | 6.8°C1.7°C | 1.7°C | 52 | 10.9 | 9.910 h |
| March | 9.8°C3.4°C | 3.4°C | 53 | 11.3 | 11.812 h |
| April | 13.5°C5.7°C | 5.7°C | 48 | 10.9 | 13.914 h |
| May | 16.9°C9.4°C | 9.4°C | 61 | 11.5 | 15.616 h |
| June | 19.5°C12.2°C | 12.2°C | 64 | 11.0 | 16.617 h |
| July | 21.6°C14.6°C | 14.6°C | 79 | 13.4 | 16.216 h |
| August | 21.5°C14.7°C | 14.7°C | 79 | 13.0 | 14.715 h |
| September | 18.5°C12.3°C | 12.3°C | 69 | 12.1 | 12.713 h |
| October | 14.4°C9.0°C | 9.0°C | 68 | 12.6 | 10.711 h |
| November | 9.8°C5.5°C | 5.5°C | 66 | 13.5 | 8.99 h |
| December | 6.6°C2.7°C | 2.7°C | 71 | 13.5 | 7.98 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
Nearby cities
- VlaardingenThe Netherlands · 3 kmHigh 13.6°C · Low 7.9°C · 777 mm rain a year
- RotterdamThe Netherlands · 6 kmHigh 13.7°C · Low 7.5°C · 772 mm rain a year
- SpijkenisseThe Netherlands · 9 kmHigh 13.8°C · Low 7.6°C · 751 mm rain a year
- DelftThe Netherlands · 10 kmHigh 13.5°C · Low 7.9°C · 777 mm rain a year
- ZoetermeerThe Netherlands · 17 kmHigh 13.5°C · Low 7.8°C · 772 mm rain a year
- The HagueThe Netherlands · 19 kmHigh 13.2°C · Low 8.3°C · 777 mm rain a year
- DordrechtThe Netherlands · 23 kmHigh 13.9°C · Low 7.3°C · 757 mm rain a year
- GoudaThe Netherlands · 24 kmHigh 13.7°C · Low 7.5°C · 792 mm rain a year
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 limitsWhat do the high and low temperatures mean?
We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.
How is a rain day counted?
A local calendar day (standard time, UTC+1, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.
Where do the numbers come from?
ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at 51.90°, 4.40° (2 km from the city centre). Rain comes from the 0.25° cell at 52.00°, 4.50°. Rotterdam and Zoetermeer lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells. These are model estimates, not weather-station readings; coast, hills and city streets can differ.
Does this page show sunshine, humidity or sea temperature?
No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.