What was the weather the day you were born?
Enter a date and a place in Germany. The nearest station of the German Weather Service shows your day – as one ray among all years on that calendar day, and as a poster to take away.
Your day
Before 1950 stations are often far apart – the nearest then measures the region rather than your place.
The weather on that day
Records for this calendar day
Since your birth year
What comes out
Your day among all the years.
Each of the 684 stations has at least 30 years of daily values; the oldest go back to 1881 and beyond.
- 684
- DWD weather stations with at least 30 years of daily measurements, active and closed.
- 1881
- From here on there are regional averages for Germany – and daily values at the oldest stations.
- +1.3 °C
- That much warmer is the 1996–2025 mean in Germany than the 30 years up to 1990.
A single year misleads: 2025 against 1990 gives only about half a degree. That is why we compare 30-year means, as climate science does.
How to read the sun wheel
Each ray is one year on your day.
The station’s first year of measurements starts at the top; all others follow clockwise to the present. The longer the ray, the higher the temperature rose on that calendar day; red means warmer than usual, blue colder, grey ordinary. A blue drop at the end shows rain, a white tip snow.
Your year glows white. In the middle is the moon as it looked that day. Below, the panel shows the day’s figures, the records for that calendar day and how much warmer it has become since your birth year.
Method
From measurement to poster.
- 1
The German Weather Service (DWD) publishes daily values for every climate station: temperature, precipitation, sunshine, snow depth, wind, cloud cover. We converted all stations with at least 30 years of measurements into a compact format without changing any values.
- 2
For your place we find the three nearest stations that measured in your year. Our server fetches the chosen station’s file and sends only that one calendar day from all years to your browser.
- 3
The ranking compares your maximum temperature with the maximum on the same calendar day in all other years at the station. We calculate the moon from the mean lunation with the corrections after Meeus.
- 4
Warming comes from the DWD’s regional averages for your federal state: the mean of the 30 years up to your birth year against the mean of the last 30 years.
Limits
- A station measures its own place, not yours. Before 1950 the nearest one is often 30 to 40 kilometres away; in valleys and on mountains the weather differs.
- Until March 2001 the DWD formed the daily mean from fixed observation times, and maximum and minimum ran from 21:30 the previous day; precipitation counts from 6 am to 6 am the next day.
- Stations were moved and instruments replaced. The DWD has only formally checked some days – the panel then says so. The most recent weeks are provisional.
- The regional averages combine Berlin with Brandenburg and Hamburg and Bremen with Lower Saxony.
Sources and licences
Where the data comes from.
- Data: Deutscher Wetterdienst, Climate Data Center – daily station measurements (KL) and regional averages of air temperature; licence CC BY 4.0; converted and ranked by us
- Legal notice and licence of the DWD
- Places: GeoNames (geonames.org), CC BY 4.0, selection edited
- Moon phase: J. Meeus, Astronomical Algorithms, ch. 49 (own calculation)
Questions
Frequently asked questions about birthday weather.
How do I find the weather on my birthday?
Enter the date, choose the place – done. The sun wheel shows your day among all years at the nearest station; the panel gives the high and low, rain, sunshine and the moon. If several stations are nearby, you can switch between the three nearest.
How far back does the data go?
At the oldest stations to 1881 and earlier, at most to the 1950s. For each year we only show stations that measured at the time – if none is nearby, the panel says so.
Why has it got warmer since I was born – and by how much?
We compare the mean of the 30 years up to your birth year with that of the last 30 years in your federal state. For people born around 1990 it is about 1.3 degrees in Germany. Comparing a single year with another misleads, because years vary a lot.
Can I print the poster or give it as a gift?
Yes. “Download poster” creates a high-resolution image (2400 × 3200 pixels) with date, place, your dedication and the DWD credit. It is made in your browser; the dedication never leaves your device.
What is stored?
Nothing. Date and place only appear in the link after the # sign when you share it. Our server only learns the station and the calendar day, not the year and not your place.
Measurements that tell a story?
Weather, environment, sensors, consumption: we turn long series of measurements into pictures people understand – and tools anyone can use.