Continental Croatia covers the north-western part of the country with Zagreb at its centre, along with Hrvatsko zagorje, Međimurje, Podravina and Moslavina. Pollen allergy in Continental Croatia affects a large share of the population - pollen from birch, oak, grasses and ragweed regularly reaches high and extreme levels. The allergy season in Zagreb, Varaždin, Čakovec, Sisak and Bjelovar runs from February to October, and the Štampar monitoring station in Zagreb is one of the most important in Croatia.
Main allergens: Birch (April - May) · Grasses (May - July) · Ragweed (August - October)
Covers: Zagreb, Varaždin, Čakovec, Sisak, Bjelovar
Detailed forecast for Continental Croatia →Littoral Croatia covers the Kvarner Bay with Rijeka at its centre, along with Crikvenica, Senj and the coastal settlements of the northern Adriatic. Pollen allergy in Littoral Croatia has a mixed profile - it combines Mediterranean species (olive, cypress) with an interior that grades into sub-Mediterranean and continental vegetation. The season is long and starts in February.
Main allergens: Olive (May - June) · Cypress (February - April) · Oak (April - May)
Covers: Rijeka, Crikvenica, Senj, Opatija, Bakar
Detailed forecast for Littoral Croatia →Highland Croatia covers Gorski kotar and Lika, with Karlovac, Ogulin and Delnice as the main centres. Pollen allergy in Highland Croatia has a distinctive profile - the cold mountain climate slows the season down and concentrations are lower than in the continental regions, but the season lasts longer because of the later flowering. It is an ideal location for allergy sufferers who want a break from the season.
Main allergens: Grasses (June - July) · Birch (May) · Pine (May - June)
Covers: Karlovac, Ogulin, Delnice, Senj, Otočac
Detailed forecast for Highland Croatia →Dalmatia covers the coastal part of Croatia from Zadar through Šibenik and Split down to Dubrovnik, along with the Dalmatian islands (Hvar, Brač, Korčula, Vis, Mljet, Dugi otok). Pollen allergy in Dalmatia has a distinctly Mediterranean profile - olive, cypress and holm oak pollen dominate in spring, while ragweed and birch matter far less than in the continental part of the country.
Main allergens: Olive (May - July) · Cypress (February - April) · Holm oak (April - May)
Covers: Split, Zadar, Šibenik, Dubrovnik, Trogir
Detailed forecast for Dalmatia →Istria and Kvarner cover the western Adriatic peninsula with Pula, Rovinj, Pazin and Poreč, along with the islands of Cres and Krk. Pollen allergy in Istria is a Mediterranean-continental mix - it combines olive, cypress and holm oak (a Mediterranean profile) with birch and oak in the interior. The season starts early (as soon as February) and runs until October.
Main allergens: Olive (May - June) · Cypress (February - April) · Grasses (May - June)
Covers: Pula, Rovinj, Poreč, Pazin, Umag
Detailed forecast for Istria & Kvarner →Slavonia covers the eastern part of Croatia, with Osijek, Slavonski Brod, Vinkovci, Vukovar and Požega as its main cities. Pollen allergy in Slavonia is particularly severe - because of the vast spread of ragweed and the climate, this region has the worst symptoms for allergy sufferers in Croatia. The season runs from March to October, peaking in late summer when ragweed reaches extreme concentrations in Osijek, Slavonski Brod and Vinkovci.
Main allergens: Ragweed (August - October) · Grasses (May - July) · Birch (April - May)
Covers: Osijek, Slavonski Brod, Vinkovci, Vukovar, Požega
Detailed forecast for Slavonia →