Pollen Calendar UK | Track Peak Pollen Seasons
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Pollen Calendar

UK Pollen Calendar

Arm yourself with pollen timelines to help manage hay fever symptoms during peak allergy seasons.

Use this UK pollen calendar to understand when different types of pollen are most active throughout the year. Tree, grass and weed pollen tend to follow seasonal patterns, making it easier to predict when hay fever symptoms may flare up. By tracking peak pollen periods, you can plan ahead, manage pollen allergies more effectively, and take steps to reduce exposure during high pollen count days.

Pollen calendar for hay fever relief. showing peak months by type: tree pollen February to July, grass pollen June to July, and weed pollen May to August.
Pollen Calendar
Allergyuk.org. (2024). Birch Pollen and Allergies | Allergy UK | National Charity. [online] Available at: https://www.allergyuk.org/birch-pollen-and-allergies/.


UK pollen seasons at a glance

In the UK, pollen season usually begins in early spring and can continue into autumn. Different plants release pollen at different times:

Tree pollen season

Tree pollen is usually the first to appear, often from late winter to spring, depending on the weather. Common triggers include birch, alder, hazel, and oak. For many people, tree pollen marks the start of hay fever season.

Grass pollen season

Grass pollen is one of the most common causes of hay fever in the UK and typically peaks from late spring to mid-summer. This is often the most difficult period for people with pollen allergies, as grass pollen levels can become very high.

Weed pollen season

Weed pollen tends to be more common from late summer into early autumn. Nettle, mugwort, and dock are among the weeds that may trigger symptoms during this time.

Dymista® Control nasal spray. For moderate to severe hay fever symptoms when intranasal antihistamines or corticosteroids are insufficient. Always read the label.

UK-DTC-2026-00075 April 2026

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