Weather Alerts

The season for walking the GR20 is fairly short.  In-fact, the refuges stay open all year round but the guardians are only present, from the end of May, through to the end of September.

If you want to do the hike without having to use special alpine equipment, crampons, rope and ice axe, the trail becomes accessible in early June. 

There are a lot of micro-climates in Corsica.  No matter what period you choose to hike the GR20, you must be ready to confront wide ranging weather conditions. It is not unusual to come up against a host of different temperatures in the same day (thunderstorms, cold, fog, heat and sunshine.)

Whatever the season, bring the appropriate equipment and clothing.  The weather can change quickly and the nights can be cold.

GR20 in the snow

There are 3 main   levels of weather warnings given by ‘Meteo France,’ they should always be taken seriously.



Other articles

Weather Alerts

Recognise the different warnings

Equipment on the GR20

List of equipment to bring to do GR20.

Eat and drink on the GR20

All the information you need, to find where to eat and drink on the GR20, restaurants, small shops, shepherds with cheese and sausage.

In which direction?

In Which Direction. North to South, or South to North.

The Best Shoes on the GR20

The single most important equipment choice you make before leaving has got to be the choice of shoes.

Join the departure of the GR20 : train, plane, bus, ferry or taxi

Planes, buses, taxis: transport to join the departure of the GR20.

How much does it cost?

How to calculate the price for your GR20, how much does it all cost, the refuges, the food, a coffee...

IphiGénie and maps

The best maps of the route are produced by the IGN (Institut Géographique National) at a scale of 1:25,000.

Is the GR20 for you?

The GR20 is certainly one of the hardest long distance walks out there. Several factors contribute to this, the rough rocky terrain, the unpredictable weather and micro climates.

State of the Refuges

The stone base layer, is what exists today of Carrozzu refuge. The above floor is the proposed design for the modernization.

Authorised or not on the GR20

The GR20 is protected by the Parc Naturel Régional de Corse. With such a large volume of people every year, there are certain rules in place to protect the area.

Electricity on the GR20

How about electricity on the GR20?