Climate - Aveiro (Portugal)
Average weather, temperature, rainfall, sunshine hours
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Climate chart - Aveiro (Portugal)
The climate of Aveiro is temperate oceanic, with mild, rainy winters and pleasantly warm, sunny summers.
The city is located on the coast of Portugal, 55 km (35 miles) south of Porto. Indeed, the climate is similar to that of Porto.
Between the city and the sea lies a coastal lagoon, the Ria de Aveiro.
The average temperature of the coldest month (January) is of 10.4 °C (50.7 °F), that of the warmest month (August) is of 20.3 °C (68.5 °F). Here are the average temperatures.
Aveiro - Average temperatures (1981-2010) | Month | Min (°C) | Max (°C) | Mean (°C) | Min (°F) | Max (°F) | Mean (°F) |
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| January | 6.3 | 14.4 | 10.4 | 43 | 58 | 50.6 |
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| February | 7.3 | 15.4 | 11.4 | 45 | 60 | 52.4 |
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| March | 9.1 | 17.5 | 13.3 | 48 | 64 | 55.9 |
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| April | 10.3 | 18.2 | 14.2 | 51 | 65 | 57.6 |
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| May | 12.5 | 20.2 | 16.4 | 54 | 68 | 61.4 |
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| June | 15 | 22.8 | 18.9 | 59 | 73 | 66 |
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| July | 16.1 | 24 | 20 | 61 | 75 | 68.1 |
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| August | 16.2 | 24.4 | 20.3 | 61 | 76 | 68.5 |
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| September | 15.2 | 23.7 | 19.4 | 59 | 75 | 67 |
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| October | 13 | 21.1 | 17 | 55 | 70 | 62.7 |
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| November | 9.8 | 17.4 | 13.6 | 50 | 63 | 56.5 |
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| December | 7.8 | 15.2 | 11.5 | 46 | 59 | 52.7 |
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| Year | 11.6 | 19.5 | 15.55 | 52.8 | 67.2 | 60 |
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Precipitation amounts to 905 millimeters (35.6 inches) per year: so, it is at an intermediate level. It ranges from 10 mm (0.4 in) in the driest month (July) to 130 mm (5.1 in) in the wettest ones (November, December). Here is the average precipitation.
Aveiro - Average precipitation| Month | Millimeters | Inches | Days |
|---|
| January | 110 | 4.3 | 11 |
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| February | 85 | 3.3 | 10 |
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| March | 45 | 1.8 | 7 |
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| April | 90 | 3.5 | 12 |
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| May | 90 | 3.5 | 10 |
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| June | 30 | 1.2 | 4 |
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| July | 10 | 0.4 | 2 |
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| August | 20 | 0.8 | 2 |
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| September | 55 | 2.2 | 5 |
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| October | 110 | 4.3 | 10 |
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| November | 130 | 5.1 | 12 |
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| December | 130 | 5.1 | 13 |
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| Year | 905 | 35.6 | 99 |
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Winter, from December to February, is mild: daytime temperatures hover around 14/15 °C (57/59 °F). The rains occur in periods of bad weather.
Occasionally there may be cold periods, with highs below 10 °C (50 °F). Snow in Aveiro is extremely rare, actually, in practice it never snows.
On the coldest nights of the year, the temperature typically drops to around 0 °C (32 °F). The coldest record is -3 °C (27 °F), recorded in December 1980 and in January 1985.
Summer, from June to mid-September, is mild or pleasantly warm. In fact, there are quite cool periods, with highs around 20/23 °C (68/73 °F), and sometimes even lower in June, and warmer periods, with temperatures hovering between 26 °C and 30 °C (79 and 86 °F). Fog can form at night and early in the morning.
Sometimes, from mid-June to early September, heat waves can occur, usually of short duration, in which the temperature can reach 36/37 °C (97/99 °F). However, this happens less often than in south-central Portugal. The highest temperature is 39 °C (102 °F), recorded in July 1993.
On average, there are around 2,750 sunshine hours per year: therefore, the amount of sunshine is very good. Here are the average sunshine hours per day.
Aveiro - Sunshine hours| Month | Average | Total |
|---|
January | 4.5 | 140 | February | 5 | 145 | March | 6.5 | 210 | April | 8 | 235 | May | 9.5 | 290 | June | 10 | 305 | July | 11 | 345 | August | 10.5 | 330 | September | 8.5 | 250 | October | 6.5 | 210 | November | 5 | 155 | December | 4.5 | 145 | Year | 7.5 | 2755 |
The sea temperature ranges between 14 °C (57 °F) and 19 °C (66 °F). So, it never becomes warm for swimming. Here are the average sea temperatures.
Aveiro - Sea temperature| Month | Celsius (°C) | Fahrenheit (°F) |
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January | 14.5 | 58 | February | 14 | 57 | March | 14 | 57 | April | 14.5 | 58 | May | 15.5 | 60 | June | 17.5 | 63 | July | 18.5 | 65 | August | 19 | 66 | September | 18.5 | 65 | October | 17.5 | 64 | November | 16.5 | 62 | December | 15.5 | 60 | Year | 16.3 | 61.4 |
Best Time
The best time to visit Aveiro runs from June to September, since it is the warmest and the least rainy period of the year. July and August are the warmest months, but the heat is rarely excessive, and in addition, they are the driest. However, in September too, the rains are still quite rare. In May, you can go, but cool and rainy days are more frequent.
Even in summer, it's better to bring a sweatshirt, and maybe a light jacket for the evening.
Those who want to avoid hot periods (which are quite rare, but possible) can choose the period from early May to mid-June and from mid-September to early October, although it rains more often.
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