Spring has sprung, and with it comes the annual surge in sneezing, wheezing, and asthma flare-ups as unsettled weather drives pollen into the air.

This year’s season is already proving unsettled, with strong winds and fluctuating temperatures stirring up allergens - and more change is on the way.

Asthma and Respiratory Foundation NZ chief executive Letitia Harding said these shifting conditions make spring one of the hardest times of year for people with respiratory conditions.

“Pollen loves warm, dry weather, and when the wind picks up, it gets everywhere, which is why this time of year can be so tough for people with respiratory conditions.

“For people with asthma and allergies, that can quickly trigger symptoms.”

It is important for asthma patients to ensure their medication is up to date - and is always on hand, Harding said.

“Being prepared and taking some simple steps can make all the difference.”

Earth Sciences NZ principal scientist Chris Brandolino said this spring will be a season of two halves - typical of La Niña weather conditions.

“The first part will be a bit like a teenager - lots of mood swings and ups and downs.

“We’ll see plenty of windy days, and a blend of cooler and warmer-than-usual days, and a fair bit of rain,” he said.

“But the second part of spring will pivot and bring more settled weather across the country.”

La Niña will bring high pressure, which Brandolino calls “happy weather” in the second half of spring - less wind and rain, more sunshine, and warmer temperatures.

Up to 80% of asthma is associated with allergies, with one in eight adults and one in eight children in New Zealand affected.

Top tips for the spring allergy season

Avoid going outside when the pollen count is very high (midday is usually peak)

Keep windows closed - at home and in the car - to avoid pollen coming inside with the breeze

Dry your clothes indoors because pollen will stick to them if they are outside

Invest in an air purifier with a Hepa (High-Efficiency Particulate Air) filter

Keep your medication to hand in case of an emergency

Do a spring clean using allergy-friendly products

Take a shower at night to wash the pollen off