Climate in Aveiro

Average daytime and nighttime temperatures

All climatic diagrams on this site result from the collected data from 2 measuring stations in Aveiro.
All data correspond to the average monthly values of the last 20 years.

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Aveiro is one of the coldest regions in Portugal with an average daily high temperature of only 20 degrees centigrade. This country would not be the best destination for a beach holiday. The maximum of summerly 18 degrees of water temperature gives little cause for joy. Due to the warmer temperatures the best time for traveling is from July to August. Nearly unattractive for tourists 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 Aveiro
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 11 hours per day, July is the sunniest month in the region of Aveiro. In December the sun shines the shortest.
Rainy days per monthRainy days per month in Aveiro
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 11 rainy days, October offers the most number of rainy days, and in July the least.
Precipitation in mm/dayPrecipitation in Aveiro
The amount of precipitation is measured in millimeters per square meter. Thus, at 2 mm/day, 2 liters of water fall on one square meter within 24 hours. With only 0.44 mm, the least rain falls in July. October, on the other hand, has the most rain.
Water temperatureWater temperatures in Aveiro
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 Aveiro are in September, when the water is 18 °C.
Relative humidity in %Relative humidity in Aveiro
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 only 73% humidity on average, it is quite dry in August. The highest value of 81% is experienced here in November.
Absolute humidity in g/m³Absolute humidity in Aveiro
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 Aveiro, although these are always average values.
Humidex in °CHumidex in Aveiro
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.
Map of Aveiro

Most important cities in the region »Aveiro«

The region has a west-east extension of about 30 km and over 80 km from north to south.

Aveiro54,16240° 38' 39"N8° 38' 44"W
São João da Madeira22,07940° 54' 8"N8° 29' 23"W
Ovar18,45240° 51' 31"N8° 37' 30"W
Ílhavo17,23640° 35' 60"N8° 40' 2"W
Feira16,37640° 55' 31"N8° 32' 34"W
Gafanha da Nazaré14,84040° 38' 10"N8° 42' 48"W
Águeda11,94140° 34' 38"N8° 26' 40"W
Oliveira de Azemeis11,77140° 50' 28"N8° 28' 32"W
Esmoriz11,39340° 57' 28"N8° 37' 39"W
Cucujães11,08740° 52' 27"N8° 30' 25"W
Lourosa9,61940° 59' 3"N8° 33' 5"W
São João de Ver9,56840° 57' 19"N8° 33' 4"W
Espinho9,56641° 0' 27"N8° 38' 28"W
Argoncilhe8,74341° 1' 31"N8° 32' 20"W
Fiães8,70840° 59' 40"N8° 31' 31"W
Beduido8,20140° 45' 51"N8° 33' 40"W
Albergaria-a-Velha7,97440° 41' 35"N8° 28' 48"W
Vale de Cambra7,64940° 50' 59"N8° 23' 38"W
Aradas7,29540° 37' 15"N8° 38' 31"W
Silvalde7,18840° 59' 38"N8° 37' 34"W
Oiã7,11840° 32' 34"N8° 32' 19"W
Válega7,00540° 50' 11"N8° 34' 50"W
Arrifana6,92740° 54' 56"N8° 29' 48"W
São João6,76240° 52' 5"N8° 36' 24"W
Arcos6,72540° 26' 52"N8° 26' 30"W
Avanca6,54040° 48' 28"N8° 34' 20"W
Oliveira do Bairro6,23940° 30' 53"N8° 29' 38"W
Lobão6,04940° 59' 12"N8° 29' 8"W
Eixo5,97840° 37' 39"N8° 34' 9"W
Branca5,63240° 45' 60"N8° 28' 57"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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