Tallinn is close to mosquito-free. The bog forests bite, and Saaremaa is tick country.

Yes, in the countryside. Tallinn and its Old Town are close to mosquito-free, and Estonia has never reported a local case of dengue, chikungunya, West Nile or malaria. The mosquitoes live in the forests and bogs of Lahemaa and Soomaa, worst in June and early July. The bite-borne illness to know is tick-borne encephalitis, most common on Saaremaa and in the west.

Bog trails in June and early July

Estonia has 34 mosquito species. The most common in a 2008–2020 survey, about 30% of more than 24,000 adults collected, was Aedes communis, a forest mosquito that breeds in snow-melt pools, the journal Zootaxa reported in 2022. Forum posters say the season is worst in late spring and early summer, heavier after a snowy winter with a slow melt or a wet spring, and eases by late July, when horse flies take over.

On the bog trails, the forest is the buggy part. Reviewers of the Viru Bog trail in Lahemaa National Park say the mosquitoes wait in the trees before the open bog and drop away once you're out on the boardwalk, and some met none at all. Soomaa National Park, with its floodplain forest and rivers, is the buggiest of the main parks. Reviews run from a bog-shoe tour whose reviewer was "eaten alive" to visitors who saw almost no mosquitoes in late August. Put on picaridin or DEET before you set out, pick a windy day if you can, and wear long sleeves through the forest stretches. Our picaridin vs. DEET comparison helps you choose.

Tallinn is the easy part. Estonian towns have far fewer mosquitoes, mostly Culex, which bite in the evening and at night. A cruise day in the Old Town needs no bug plan, and Pärnu's beach and town tend to be light as well, with Soomaa a day trip away.

Ticks and TBE, highest on Saaremaa

Tick-borne encephalitis (TBE) is Estonia's real bite-borne risk. The European Centre for Disease Prevention and Control counted 140 confirmed cases in 2022, 10.5 per 100,000 people, the second-highest rate in the EU after Lithuania. The Health Board (Terviseamet) counted about 130 cases in January–October 2025 in its monthly bulletin, roughly level with a year earlier. Most cases occur in western Estonia. Estonian broadcaster ERR reported in 2026, citing a Health Board tick study, that TBE is most common on Saaremaa, and earlier ERR reporting put the island's rate at about five times the national average and Pärnu County's at about two and a half times.

For travelers to TBE-endemic areas, CDC's Estonia page says: "TBE vaccine is recommended for persons who will have extensive exposure to ticks based on their planned outdoor activities and itinerary. TBE vaccine may be considered for persons who might engage in outdoor activities in areas ticks are likely to be found." Hiking, camping or a cottage stay on Saaremaa or elsewhere in the west are the plans to take to a travel clinic 4–6 weeks before you fly. Ticks live in forest, meadow and coastal scrub. For any walk there, CDC advises a repellent with 20% or more DEET when you need protection from ticks as well as mosquitoes, and a check of your entire body for ticks afterward.

Where you're going

How the main stops compare for a June–September trip.

Adding Helsinki or Riga? Our Finland briefing covers Helsinki, Lapland and the Turku archipelago's ticks, and our Latvia briefing covers Riga, Jūrmala and the Ķemeri bog boardwalk.

What travelers report

Paraphrased from TripAdvisor forum threads and linked so you can read them in full. None is dated to this season, and a snowy winter, a wet spring or a windy day changes the picture.

• Tallinn · summer

  Replies said mosquitoes are mainly a countryside problem and you are unlikely to see one in Tallinn; a poster with a mosquito allergy said they never get bitten there. TripAdvisor ↗

• Estonia (camping) · July

  Asked whether July mosquitoes are too bad for camping, a reply said they are not a big enough problem to stop you tenting, but to bring repellent. TripAdvisor ↗

• Estonia (countryside) · summer

  In a thread on mosquitoes and large flies, a poster said horse flies usually arrive when the mosquito season is almost over. TripAdvisor ↗

CDC recommends no malaria medicine and no yellow fever vaccine for Estonia. A fever or headache in the weeks after a tick bite needs a doctor, and any fever during or after your trip means a doctor visit, and you tell them you were in Estonia.

Traveler questions