TempoLife › Outdoor risk and season guide › forest-fire
Forest and wildfire risk: season and precautions
May to August, during dry spells.
These are general seasonal patterns for the Nordic and Baltic region, not a live forecast. Always check the current local advisory — the weather service, health authority or water-quality notice — before you head out.
The risk
After a run of dry days the forest floor, heath and peat dry out and ignite easily. A discarded barbecue, a cigarette or a spark can start a fire that spreads fast in wind, and peat fires can smoulder underground for weeks. Authorities issue a fire-danger warning during these periods and frequently ban all open flames in nature.
How to stay safe
Check the fire-danger index before you go, and during a warning light no open fire, camping stove or barbecue in or near forest — use only marked, permitted fire sites when they are open. Never leave a fire unattended and drown it completely, stirring the ashes, before you leave. Report smoke or flames to the emergency number without delay.
Good to know
Everyone shares the duty of care here; a single careless fire can burn hundreds of hectares.
Other seasonal risks
Ticks (Lyme disease and TBE)
Ticks wait on grass and low vegetation in forests, meadows and gardens and attach to skin as you brush past.
Mosquitoes
Mosquitoes breed in still water and are at their fiercest around bogs, lakes and wet forest, particularly in the long northern twilight.
Blue-green algae (cyanobacteria)
In warm, still water, cyanobacteria can multiply into a bloom that looks like spilled paint, greenish streaks or a scummy film on the surface.
Pollen and hay fever
The northern pollen season is compressed and intense.
Thin ice
Ice on lakes, rivers and the sea forms and melts unevenly.
Source: Seasonal patterns follow standard public-health and safety guidance for the region; confirm with the current local advisory. · checked 2026-09-04
Frequently asked questions
When is forest and wildfire risk worst?
Long hot, dry, windy periods in high summer.
How do I reduce the risk from forest and wildfire risk?
Check the fire-danger index before you go, and during a warning light no open fire, camping stove or barbecue in or near forest — use only marked, permitted fire sites when they are open.
Enjoy the outdoors year round
TempoLife helps you keep an outdoor habit going safely through every season.