Farce Of The Week: Germany’s Weather Site Donnerwetter.de Attempts To Measure The Rhine River’s Temperature!

By P Gosselin

A weather site’s amazingly sloppy measuremnt goes viral across Germany…

Much of Europe has been enduring a heat wave and below normal precipitation. Not surprisingly, the media are busy using the hot weather to further promote climate alarm and get more clicks however they can.

One way to accomplish this is to use sompletely bogus measurements to get viewers to believe the end of the world is near. The latest example is brought to you by Germany’s donnerwetter.de – a weather site no less!

Likely with the aim of magnifying the drama of Germany’s drought situation and the recent hot weather, donnerwetter here at Facebook posted a video showing the Rhine River’s alleged dire situation:

“28°C water temperature”, proclaims the gentleman from donnerwetter.de, after dipping his thermometer in the Rhine yesterday. Germany is cooking!

That footage of the Rhine’s temperature measurement has since gone viral across Germany, but not because of the Rhine’s 28°C temperature.  The video has made a splash across the German Internet because of the obviously totally shoddy manner the measurement was performed!

2 cm depth

Firstly, the measuremnet was made in ridiculously shallow water — so shallow in fact that the man was able to walk to the spot with his running shoes on. Perhaps he didn’t want to bother taking them off. Maybe he forgot to bring boots along. No need! 2 cm depth is close enough!

The 1 sec. dip

Next, he dips the end of the thermometer in the water, but holds it there for just a second, second and a half, never allowing the instrument a real chance to react. The 28°C reading was probably the air temperature- This would make sense judging from the shadow the man casts–indicating the measurement was performed on the East side of the Rhine and the time being around 10 – 11 a.m. The video itself was posted on Facebook at 12:32 pm.

Time to heat up

The extremely shallow and still water had ample to time to heat up for hours under the bright morning sun.

Shoddy quality on display

According to its website, donnerwetter is located in Bonn, so the measurement was probably taken at the Rhine there.

Donnerwetter.de is run by meteorologist Dr. Karsten Brandt, a man we could expect to have good knowledge on how to properly take accurate measurements. It’s a real mystery how such shoddy quality got passed him. Brandt’s partner at donnerwetter.de is Michael Hoffmüller-Klein.

As of 3 pm today, donnerwetter.de still has yet to take down this embarassing video at Facebook.

At Facebook, donnerwetter.de wrote:

#Rhine: The low water levels are at 26–29 degrees Celsius—Impact on the Economy
Our forecast: The prolonged low water levels on the #Danube and especially the #Rhine will have a massive economic impact on the German economy, as they are expected to persist for weeks.
Unless the weather changes, it may not be until September that water levels reach their lowest point, well below current levels.
www.donnerwetter.de
Welcome to the new “normal” in #Europe”

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42 Comments
MrGrimNasty
August 4, 2026 10:49 pm

Yer, but I bet your trainers and shirt don’t match that well.

Walter Sobchak
Reply to  MrGrimNasty
August 5, 2026 5:02 am

Clearly shopped at a clown supply store.

missoulamike
August 4, 2026 11:03 pm

They aren’t even trying anymore

SxyxS
Reply to  missoulamike
August 5, 2026 7:13 am

Puddle science will create millions of well paid jobs in the future.

Reply to  missoulamike
August 5, 2026 9:50 pm

The true believers will still believe them though.

August 4, 2026 11:17 pm

I grew up on Boca Ciega bay in Florida. If I took a measurement in shallow water like that in summer it would probably be 100F or more. Either they are stupid, think we are, or both.

Sparta Nova 4
Reply to  Shoki
August 5, 2026 5:27 am

Similar to what occurred at Manatee Bay a few years back.

Reply to  Sparta Nova 4
August 5, 2026 7:22 am

I remember that. I actually went to the NOAA buoy website and downloaded, like, a week or so of data. IIRC, temp was taken at low tide in an enclosed (or restricted) bay, with the temp. sensor barely above the bay bottom after the sun had been heating it all day. And then it was reported as a record sea temperature.

Sparta Nova 4
Reply to  Phil R
August 5, 2026 9:43 am

I reviewed that same data, but it also include above surface air temperatures that were lower. Also noted the seabed was black muck.

Reply to  Sparta Nova 4
August 5, 2026 1:07 pm

And the riverbed is dark.

Reply to  Sparta Nova 4
August 5, 2026 7:39 am

Just found my old data file. the reported temp. that everyone was having the vapors over was 101.4°F, but the temp. at about the same time the day before was 100.1°F. Guess some really intense global warming kicked in over a 24-hour period.

Russell Cook
Reply to  Sparta Nova 4
August 5, 2026 10:18 pm

The PBS NewsHour news outlet reported it like it was the end of the world at the time:
Coral reefs off coast of Florida bleached as water temperatures top 100 degrees Fahrenheit

Sceptic-Al
August 5, 2026 12:08 am

The PT100 sensor embedded inside a protective lining would need a minute to reach 99.99% of the water temperature.Body temperature thermometers need one minute up one’s a— to settle down. Did he test the instrument on himself first to check its accuracy? It seems that that thing was just bought from a cheap shop on the spur of the momentJournalists are now the ned normal for meteorologists and climate scientistsAfter having lost the few scientists who were pushing the lie, they then found Greta, elevated her to goddess level, goddess of climate change, but who now has migrated to other types of lies having discovered that climate change does not make money for her anymore.

August 5, 2026 12:09 am

Did he once work for the Met Office !! 😉

IRheaterGuy
Reply to  bnice2000
August 5, 2026 7:51 am

…as a janitor?

Reply to  bnice2000
August 5, 2026 8:00 am

Trust the science.

I like how he used a pool thermometer.

August 5, 2026 12:13 am

The BBC did something similar a few weeks ago. Showing a digital thermometer on a rock in full sun to demonstrate how hot it was. This is their response to my 2nd complaint. As usual they dismissed the 1st out of hand.

Thank you for getting back in touch about BBC News at One broadcast on 23 June. Apologies for the delay in replying.

We’re sorry to learn that you weren’t satisfied with our earlier response. We raised your complaint with the programme’s senior editor.

It had been mentioned several times in the programme that temperatures were forecast to go above 35 degrees Celsius. We don’t believe it was misleading to include the shot of a thermometer resting on a rock/stone reading 34.1C – particularly when shortly after this report, we heard from BBC weather meteorologist Ben Rich, holding a different thermometer, explain that:

“We measure the temperature in the shade but if you are standing in the sun, that is what you would be getting right now [41.9C]. But in the shade, those temperatures rapidly rising through the 30s, we’re going to get quite close to beating that UK temperature record of 35.6 Celsius.”

We’re sorry if you remain unhappy. As we’ve indicated above, the senior editor of BBC News at One has seen your complaint

Reply to  Ben Vorlich
August 5, 2026 1:54 am

These hot rocks are well for a quick BBQ 🥩 🍷 🤗 👍

Reply to  Krishna Gans
August 5, 2026 4:43 am

The BBC missed a trick – they should have tried to fry an egg on the rock.

strativarius
Reply to  Ben Vorlich
August 5, 2026 4:31 am

We’re sorry to learn that you weren’t satisfied with our earlier response.

No, they’re not. They’re only sorry you won’t go away and shut up.

Reply to  Ben Vorlich
August 5, 2026 7:24 am

We’re sorry if you remain unhappy, now, f**k off. Love it…

August 5, 2026 12:46 am

Life skills: matching togs and trainers, posting on Facebook. That’s it.

Ed Zuiderwijk
August 5, 2026 12:48 am

“We are in the age of boiling rivers”, says UN satrap Guterres.

But Dr Brandt only need to start worrying when the hunger stones appear at the central river channel.

Sparta Nova 4
Reply to  Ed Zuiderwijk
August 5, 2026 9:45 am

But, but, but, this drought is UNPRECIDENTAED (media emphasis added).
/sarc

Decaf
August 5, 2026 12:56 am

Even with the warning here how lame the video on FB was, I was caught off-guard. So ridiculous.

Len Werner
August 5, 2026 1:04 am

Having done a fair number of stream measurements in a career that included mineral and geothermal exploration–temperature, pH, dithizone–the white pants and sneakers says volumes. But it is indeed strange that an adult considers this useful data.

John Gavlas
August 5, 2026 3:21 am

“…amazingly sloppy measuremnt…” – yes – your subtitle actually says that. Oh, the irony!

alacran
August 5, 2026 3:32 am

When it comes to fueling “German Angst” about so-called “man-made” climate change, no tactic employed by the mostly left-wing, green alarmists in the media is too absurd or too stupid to further amplify it! After all, a justification must be provided for the completely senseless and expensive CO2 reduction agenda, which is causing catastrophic economic consequences due to the shift to unreliable “renewables”with extreme energy costs!
The gullible must be convinced that CO₂ is a kind of main regulator for the Earth’s temperature and that Germany can make a significant contribution to CO₂ reduction by phasing out energy production with fossil fuels, promoting electromobility, etc. – which is of course absurd when one considers the developments in India and China!

Sparta Nova 4
Reply to  alacran
August 5, 2026 9:46 am

As always, the end justifies the means.
Sadly, there is no adjudication on the definition of the end, just hyperbole..

atticman
August 5, 2026 4:23 am

Did anyone else notice that he also held the sensor beween his finger and thumb whilst lifting the thermometer up to the camera?

strativarius
August 5, 2026 4:29 am

Achtung! Show the wasser to the thermometer.

Now place hand over thermomometer….

Good grief. A complete, total and utter buffoon. What worries me is how many might have swallowed that claptrap wholesale?

Reply to  strativarius
August 5, 2026 8:12 am

ow many might have swallowed that claptrap wholesale?

From the responses on the FB post, they’re at least in a minority. There’s a lot of criticism there.

Sparta Nova 4
August 5, 2026 5:27 am

When one lacks facts, all one has to do is make sh*t up.

Reply to  Sparta Nova 4
August 5, 2026 7:15 am

Like TFK_bams09 et al.

Sparta Nova 4
Reply to  Nicholas Schroeder
August 5, 2026 9:47 am

🙂

Sparta Nova 4
August 5, 2026 5:30 am

Not sure, but it looks like he is wearing all of the pride colors.

SxyxS
Reply to  Sparta Nova 4
August 5, 2026 7:19 am

Most likely.

The weird colors of his shoes match that of his shirt.
Doubt a straight guy would do that.
At least not these colors and white trousers on top.

Dude doesn’t know what a constipation is.

August 5, 2026 6:49 am

No different from using an over-the-counter IR thermometer to measure the sky’s & cloud’s imaginary downwelling power flux, W/m^2.

Sparta Nova 4
Reply to  Nicholas Schroeder
August 5, 2026 9:48 am

Your sarcasm is noted.

Randle Dewees
August 5, 2026 9:04 am

Oh, how funny. I spent a fair fraction of my youth in rivers, creeks, and oceans. I could have told him, based on my childhood experiences, that one inch deep water on a river edge would be pretty warm.

I just went through an exercise in bootstrap calibration of temperature sensors. I noticed my evening ice cream bars were kind of soft, and that there was a good chance some of it would end up in my lap before finishing it. This awareness was late coming because, before her recent death, my dog Madeliene would get that last melty bit. I went on a freezer measurement campaign with a cheap Chinese made bimetallic frig thermometer, two different mercury thermometers, a cheap IR thermometer, and lasty, an ancient Omega 871 “digital thermometer” with wire thermal couples.

I’ve never been great at experiment design, and this one was the usual random process. None of thermometers agreed, of course. I could immediately eliminate the IR unit as the readings were all over the place based on, I guess, content emissivity. Likewise, the frig thermometer was just way out from the others, I guess that is why it’s been in a drawer all these years. The mercury thermometers were exceedingly difficult to read, misting or frosting over immediately, along with the indicated temperature shooting up as I tried to read them. The Omega is a nice bit of kit; it has been very useful over the years. But its 30 years past calibration. I did a lengthy ice water cal, and it seems to read low by 1.3F. Now I was getting somewhere. One of the mercury thermometers, a lab grade VWR 0-300F, read 32F on the dot. The other, a cheap commercial unit read 34. So now I have a calibrated thermal couple unit and I adjusted my frig freezer. Actually, I turned it down the one last remaining cold increment. My wife, (49 years now), pointed out this course of action right away.

I did purchase a Rubbermaid “Commercial Products Thermometer”, for the princely sum of $14.37. A gamble as it looks pretty much like all the other Chinese made frig thermometers. But it seems to be spot on, reading about a degree more than the Omega. At room temp it matches the VWR too. Seems we were running our frig compartment a little on the warm side of the safe zone.

Reply to  Randle Dewees
August 5, 2026 12:56 pm

Did this expert never hear of a thermocline?

Nik
August 5, 2026 1:35 pm

He’s dressed like a medieval fool, and he plays the part.