Reason hay fever can get worse when it rains revealed - and it will surprise you

Brits have seen in much of the country over the past few days after a long hot and dry spell, yet sufferers may have seen their symptoms worsen.

Many people with the condition could well be wondering why they still are even in the wet and an expert has revealed exactly why. Pharmacist Allan Green said that while light rain can bring relief by clearing pollen from the air, heavy rain can actually stir up pollen, particularly when it is windy or later in the day.

Low pressure symptoms have been sweeping in from the Atlantic bringing wet especially for the west of the UK. And according to Weldricks Pharmacy, searches for “why is my hay fever worse when it rains?” increased by 3,450% in the last week alone.

Mr Green explained: “Sunshine also plays a big part. Plants rely on light for photosynthesis, so cloudy spells may temporarily reduce pollen levels — but once the sun returns, expect a sharp rise.

“That’s why it’s so important for hay fever sufferers, especially parents of children with allergies, to stay alert to the weather forecast and plan accordingly.”

Around 13 million people in the UK are thought to suffer from hay fever. Mr Green advised those struggling to avoid locations such as open fields, grasslands or areas with lots of trees, reported the

He added: “Urban parks with more paved areas than trees or flowerbeds can also be a good option, or areas with natural windbreaks such as hills or mountains can help reduce the pollen in the air, regardless of the weather.

“If the rain gets heavy and you’re staying indoors, remember to close the windows fully to prevent pollen stirred up by the rain from being blown inside. Using an air purifier and drying laundry indoors can also help reduce exposure.

“By keeping an eye on weather changes and adjusting your routine accordingly, you can significantly ease hay fever symptoms — even on unpredictable spring and summer days.”

Pollen levels remained low over the bank holiday weekend but are expected to rise in some regions this week.

As of Wednesday, the forecast was predicting high pollen levels in the South West, London and South East, and the East of England on Saturday and Sunday. There is a divide developing across the country with north and west set for cooler conditions for the end of the week while the south east could see highs of 25C.