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Climate and meteorology

Geography | Geology | Climate and meteorology


Collserola lies fully within the area of Mediterranean influence, characterised by mild winters, hot, dry summers, moderate annual thermal oscillation and seasonal rainfall which is, overall, low and highly irregular.


According to data from the Fabra Observatory (432 m), mean annual temperature is around 15°C. In winter (usually not a particularly cold season here), average temperature rarely falls below 5°C, whilst in summer it is around 21°C.


As for rainfall, the annual average is relatively high, over 620 mm, with two wet seasons: autumn (October, 83.1 mm) and spring (May, 60.4 mm) and an intensely dry summer period (July, 10.6 mm).


According to data gathered over the last ten years at the Consortium weather station, mean average temperature is 14.1°C and average annual rainfall 526 mm.


Microclimates (significant local climate variations) clearly exist in Collserola, influenced by the topography of the terrain, the sea’s thermoregulatory effect, variations in altitude, the amount of insolation received by different mountainsides, plant cover, etc. As a result of all this, temperature differences of up to 10°C or more can exist from one place to another in winter.


The risk of fire is highest from May to September, above all in July and August, when water lost due to evaporation exceeds rainfall.

Consorci del Parc Natural de la Serra de Collserola
Ctra. de l'Església, 92. 08017 Barcelona. T: 932 803 552


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