There's been below-average rainfall earlier this year, which is bad news after last year's drought. It came as wildfires gripped parts of Germany during a spring heatwave.
Unless significant rain falls in May, experts say there is little chance of decent crops.
“If the dry weather continues in the coming months, the drought of 2018 could be repeated or even exceeded,” warned Udo Busch, head of the German Weather Service's (DWD) agricultural section.
A lack of rain has turned some forests into potential tinderboxes.
Over the past few days, German firefighters have tackled blazing forest fires in the states of Hesse, Brandenburg and Thuringia.
A senior fire chief has even asked authorities, including the army, to lend helicopters in order to “react adequately”.
Scandinavia has also been hit, with Swedish firefighters currently tackling 10 to 15 forest fires a day after precious little rain this month.
The most serious blaze broke out over 300 hectares in the southern district of Hassleholm, forcing 49 people to be evacuated.
'Decisive month is May'
Dry conditions are a headache for northern Europe's farmers.
Phil Hogan, the European Union's agriculture commissioner, on Thursday promised farmers and rural communities in member states will get EU support should drought strike again.
In the German state of Brandenburg, surrounding Berlin, barren fields resemble desert landscapes.
There are fears of a repeat of last year's poor harvest, when crops were down between 30 to 80 percent, threatening the livelihoods of many German farmers.
Across Brandenburg's 780 farms, reported losses for 2018 topped €93 million euros and the state had to provide 72 million euros in aid.
Rain is forecast for the coming days. But it is expected to be far insufficient for what is needed to mitigate a worrying situation.
“We sincerely hope for rain — the decisive month for us is May,” said farmers' association spokesman Tino Erstling.
In neighbouring Austria, the first signs of drought have already appeared in the east and north, raising fears of another bleak harvest.
Rainfall is already down to just a quarter of the 10-year average in recent weeks.
'Signs point to suffering'
Potato growers are demanding a relaxation of pesticide regulations to better control numbers of wireworm, which they say are flourishing because of drought.
“The current signs point to suffering for agriculture,” said Hagelversicherung, a specialist insurance company.
The situation is even more shocking in the Czech Republic, which borders Germany, where 99 percent of the country has already been hit by drought over the last five weeks.
A third of the country is classed among the worst two drought categories on a six-level scale, according to the Intersucho (Interdrought) portal, which monitors drought in central Europe.
The drought has come a month earlier than last year.
Hardest hit will be the regions northwest of Prague, where hops crucial to the Czech beer industry are grown, and in the southeast, famous for its wine and grain.
The drought is also devastating Czech forests as it encourages breeding of the bark beetle with damage this year projected to top one billion euros.
The Czech Republic has been grappling with bark beetle infestation for several years and experts say the current situation is the worst in Czech history.