Climate in Algarve

Average daytime and nighttime temperatures

All climate diagrams on this page result from the collected data of the official weather station in Algarve in a height of 8m above sea level. All data correspond to the average monthly values of the last 20 years.
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A beach holiday can also be enjoyed in the warmer season, but water temperatures will not reach much more than 20 °C. Due to the warmer temperatures the best time for traveling is in July. Less attractive are the cold months from November to March.
Overview: Climate in Portugal
Daylengths and sun positions in Portugal
Compare climate with other regions or countries
Hours of sunshine per daySunshine hours per day in Algarve
The number of hours of sunshine refers to the time when the sun is actually visible. That is, without any obstruction of visibility by clouds, fog or mountains. With 13 hours per day, July is the sunniest month in the region of Algarve. In December the sun shines the shortest.
Rainy days per monthRainy days per month in Algarve
A rainy day is a day on which at least an amount of 0.1 mm precipitation (=0.1 liter) per square meter falls. This can be rain, snow, hail or even dew. So it does not have to rain the whole day. With 9 rainy days, October offers the most number of rainy days, and in July the least.
Precipitation in mm/dayPrecipitation in Algarve
The amount of precipitation is measured in millimeters per square meter. Thus, at two mm/day, two liters of water fall on one square meter within 24 hours. With only 0.0 mm, the least rain falls in July. December, on the other hand, has the most rain.
Water temperatureWater temperatures in Algarve
Water temperature depends not only on solar radiation within the same region, but also on ocean currents. For example, depending on the season, cold or warm water masses are moved from other areas. The warmest temperatures in Algarve are in August, when the water is 20 °C.
Relative humidity in %Relative humidity in Algarve
Warm air can absorb more moisture than cold air. The relative humidity indicates how much moisture of the physically possible is actually contained in the air. At high humidity, the person feels uncomfortable and perceives this as oppressive. In general, a relative humidity of 40-60% gives as pleasant. With humidity averaging 79%, December is the most uncomfortable. In July, on the other hand, it is easier to endure.
Absolute humidity in g/m³Absolute humidity in Algarve
In warm months, there is also a higher absolute humidity almost everywhere. At a temperature of 25°C, air can absorb up to 23 grams of water per cubic meter. At 20°C, it is only 17.3 grams. A relative humidity of 40% at 25°C thus corresponds to an absolute humidity of 9.2 grams of water. From a proportion of approx. 13.5 grams, humans perceive the air as muggy. This limit is only reached in a few months in Algarve, although these are always average values.
Humidex in °CHumidex in Algarve
The "Humidex" (humidity index) is an index of well-being in warmer areas, calculated from the air temperature, relative humidity and dew point. The index corresponds approximately to the temperature felt. At high temperatures, the body transports heat away by sweating. At high humidity the ambient air can only absorb a small amount of sweat and thus one feels uncomfortable. An index of 20-29 is considered comfortable. Up to 39, people perceive the air as slightly uncomfortable, and above 40, as very uncomfortable. Values above 45 are dangerous in the long run and often lead to heat stroke.
Climate charts for other regions in Portugal

Map of Algarve

Most important cities in the region »Algarve«

Only very small villages are located here. The two biggest are Faro and Portimão. The region has a west-east extension of about 140 km and over 40 km from north to south.

CityPopulationGeo position
Faro41,35537° 1' 10"N7° 55' 56"W
Portimão38,48737° 8' 19"N8° 32' 16"W
Olhão29,23937° 1' 43"N7° 50' 28"W
Loulé23,10937° 8' 16"N8° 1' 11"W
Laranjeiro20,47337° 4' 6"N7° 47' 37"W
Lagos18,83137° 6' 7"N8° 40' 27"W
Quarteira18,78337° 4' 10"N8° 6' 2"W
Albufeira15,85137° 5' 17"N8° 15' 1"W
Tavira13,87137° 7' 38"N7° 38' 55"W
Vila Real de Santo António11,56037° 11' 42"N7° 25' 4"W
São Brás de Alportel11,15337° 9' 11"N7° 53' 15"W
Silves10,91737° 11' 21"N8° 26' 18"W
Almancil9,89837° 5' 13"N8° 1' 51"W
Estômbar8,59037° 8' 47"N8° 29' 6"W
Moncarapacho8,54537° 5' 19"N7° 47' 14"W
São Bartolomeu de Messines8,38137° 15' 37"N8° 17' 12"W
Lagoa6,30137° 8' 7"N8° 27' 11"W
Monchique5,42137° 19' 4"N8° 33' 19"W
Alvor5,27237° 7' 48"N8° 35' 30"W
Ferreiras5,15737° 7' 45"N8° 14' 15"W
Castro Marim5,08937° 13' 14"N7° 26' 37"W
Boliqueime4,47037° 8' 14"N8° 9' 30"W
Monte Gordo4,28237° 10' 55"N7° 27' 8"W
Guia4,17337° 7' 47"N8° 17' 59"W
Aljezur4,12237° 19' 9"N8° 48' 12"W
Santa Bárbara de Nexe4,08737° 6' 22"N7° 57' 59"W
Armação de Pêra4,03037° 6' 9"N8° 21' 25"W
Luz3,62737° 5' 32"N7° 42' 16"W
Carvoeiro2,78437° 5' 26"N8° 27' 14"W
Sagres1,93937° 0' 31"N8° 56' 35"W

Data basis: German Weather Service, individual values averaged and supplemented by own elements. Data on cities and inhabitants:, United Nations Statistics Division and own research.
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