Hay fever sufferers are reporting particularly bad symptoms this year (Image: Getty Images/Cultura RF)

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The summer months have finally arrived and while Brits are enjoying the sun, many hay fever sufferers are reporting particularly bad symptoms this year.

Grass pollen is in its peak season and some parts of the country are experiencing very high levels of it.

The Met Office has now introduced a daily pollen forecast for the whole country and its most recent map shows levels will remain pretty high all week.

Regions including London, the South East and South West, the Midlands, North East and North West have been very badly affected, especially due to types of weed pollen, such as nettle.

Northern Scotland has experienced low levels of grass pollen, while other parts of the country have seen medium levels in recent days.

The Met Office's pollen forecast for today
(Image: Met Office)

Meanwhile, in Northern Ireland pollen levels have been medium and will remain that way for the rest of the week.

The main symptoms of hay fever include sneezing and coughing, a runny or blocked nose, itchy eyes or throat, and loss of smell.

Hay fever is particularly bad for many at the moment as the UK experienced predominantly wet weather in the past months, which led to a decrease in pollen concentration in the air.

Sneezing is one of the most common symptoms of hay fever
(Image: Getty Images)

But now that temperatures have gone up amid the country's heatwave, with the mercury reaching 29C on Monday, hay fever sufferers are seeing their symptoms worsen.

It happens because warm temperatures, largely between 18C and 28C, prompt more pollen to be released in the air.

The Met Office told National World : "We are seeing high and very high grass pollen counts in many places which will be having an impact on sufferers.

Grass pollen is in its peak season
(Image: Getty Images)

"Weather doesn't in itself trigger hay fever symptoms, but it can help increase the pollen count. Different weather types have different influences on the pollen count.

"We are currently in the peak grass pollen season when we will see high, or very high, counts during any dry, warm weather.

"There are other species in flower too, such as some weeds, but the majority of hay fever sufferers are allergic to grass pollen."

The hay fever season will start at different times depending on where you live in the UK.

The Met Office explains: "There’s a later start and shorter season in the north of the UK, where generally there is less pollen. Urban areas have lower counts than the countryside, and places inland have higher counts than around the coast.

"If we look at grass pollen, the peak across England and Wales, for example, usually starts in the first two weeks of June.

"There are two peaks though, with the second, lower peak occurring in the first two weeks of July, after which things tail off slowly."