Public transport is very limited. The island is best explored by car or bicycle. Car rental is available in Kärdla and at the ferry port; booking ahead in summer is essential. A well-maintained network of roads connects all major sites. Taxis are available but should be booked by phone. There is a local bus network, but services are infrequent, especially on weekends. Popular ride-hailing apps like Bolt operate in Kärdla. Ferries connect Hiiumaa to the mainland (Rohuküla-Heltermaa) and to Saaremaa island (Triigi-Sõru); booking vehicle transport in advance during peak season is crucial. Bicycles can be rented in Kärdla and at some guesthouses.
Late May to early September offers the warmest weather (15-22°C), long daylight hours, and the liveliest atmosphere, with most services open. July and August are peak season. June is ideal for the Midnight Sun phenomenon and nature in full bloom. The shoulder seasons of May and September are quieter, cooler, and beautiful for hiking and cycling, with fewer tourists. Winter (December-February) is cold, dark, and snowy, offering a stark, peaceful beauty for solitude-seekers, but many tourist facilities are closed.
Estonians are generally reserved but polite and honest. A handshake is a common greeting. Remove shoes when entering homes. Tipping is not obligatory but appreciated; rounding up the bill or leaving 5-10% in restaurants is customary for good service. Dress is casual but neat; more formal attire may be expected for fine dining. Respect nature: stay on marked trails, do not litter, and follow 'everyman's right' responsibly (you may roam freely but must not disturb or damage). Sauna culture is important; invitations are a sign of friendship. On Hiiumaa, the local dialect and traditions are a point of pride; showing interest is welcomed.
Hiiumaa is extremely safe with very low crime rates. Violent crime is rare. Standard precautions against petty theft (e.g., securing valuables in cars) are wise. No specific areas need to be avoided. Be cautious when driving, especially at dawn/dusk, as wildlife (moose, deer) crossing roads is common. The coastal cliffs and rocky shores can be slippery and dangerous in stormy weather. There are no notable tourist scams. The main safety concerns are related to nature: respect warning signs on beaches (strong currents), be prepared for sudden weather changes, and dress appropriately for outdoor activities.
Medical services on Hiiumaa are limited. The main facility is the Hiiumaa Hospital (Haigla) in Kärdla, which provides basic emergency and inpatient care. For serious conditions, patients are transferred to mainland Estonia (Tallinn). Travelers should ensure they have comprehensive travel health insurance valid for Estonia and the EU (European Health Insurance Card for EU citizens). No special vaccinations are required. Tick-borne encephalitis is a risk in forested and grassy areas from spring to autumn; vaccination is recommended for those planning outdoor activities. Pharmacies (Apteek) are available in Kärdla. Bring an adequate supply of any prescription medications.