Climate data De Bilt; temperature, precipitation, sunshine 1800-2014
| Periods | Temperature Ice days (days) | Temperature Frost days (days) | Temperature Summery days (days) | Temperature Tropical days (days) | Temperature Heating degree days (degree Celsius) | Precipitation Days with precipitation (days) | Precipitation Snow days (days) | Precipitation Dry days (days) | Precipitation Days with fog (days) | Sunshine Sunless days (days) |
|---|---|---|---|---|---|---|---|---|---|---|
| 2014 | 0 | 26 | 23 | 2 | 2,385 | 124 | 3 | 130 | 88 | 42 |
| Source: CBS. | ||||||||||
Table explanation
This table presents climate data from the Dutch weather station De Bilt (source: KNMI).
The average winter and summer temperatures, which started in 1800, are the longest current series shown in the table.
The series on the average year temperature and on hours of sunshine per year started in 1900. For the number of days below of above a certain temperature (ice days, summery days) the ranges started between 1940 and 1950. The complete set of climate data is available from 1980 onwards.
Data available from: 1800-2014.
Status of the figures:
All data are definite.
Changes as of 19 April 2016:
Not. This table has been discontinued.
When will new figures be published?
Not applicable anymore.
Data on the weather and climate in The Netherlands can be found on the website of the Royal Netherlands Meteorological Institute KNMI
Description topics
- Temperature
- Air temperature in degrees Celsius.
- Ice days
- Number of days in the year with a maximum temperature below 0.0 degrees Celsius
- Frost days
- Number of days in the year with a minimum temperature below 0.0 degrees Celsius
- Summery days
- Number of days in the year with a maximum temperature of 25.0 degrees Celsius or higher.
- Tropical days
- Number of days in the year with a maximum temperature of 30.0 degrees Celsius or higher.
- Heating degree days
- Heating degree days (HDD):
The sum per year of average daily temperatures below 18 degrees Celsius.
For example:
-a day with an average temperature of 20 degrees Celsius: no HDD
-a day with an average temperature of 10 degrees Celsius: 18-10 = 8 HDD
-a day with an average temperature of -4 degrees Celsius: 18 - (- 4) = 22 HDD
The sum of these three days is thus 30 heating degree days .
- Precipitation
- Includes rain, snow, hail, sleet, dew and frost.
- Days with precipitation
- The number of days with at least 1.0 mm precipitation
- Snow days
- A day on which at least one snow flake has been observed.
- Dry days
- Day without measurable precipitation.
- Days with fog
- Days on which visibility is less than 1,000 metres at some time.
- Sunshine
- Radiation of the sun (=global radiation). The duration of sunshine is calculated from the global radiation.
- Sunless days
- Days with zero hours of sunshine.