Weather Portugal
Portugal actual weather and longterm weather forecast for Portugal in December and January. You can view actual weather in Portugal thru online Portugal webcams.
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Portugal is defined as a Mediterranean climate and is one of the warmest European countries: the annual average temperature in mainland Portugal varies from 12 °C (53.6 °F) in the mountainous interior north to over 18 °C (64.4 °F) in the south and on the Guadiana river basin. The Algarve, separated from the Alentejo region by mountains reaching up to 900 metres in Pico da Foia, has a climate similar to that of the southern coastal areas of Spain or Southern California.
In some areas, such as the Guadiana basin, annual average temperatures can be as high as 20 °C (68 °F), but summer highest temperatures may be over 45 °C (113 °F). The record high of 47.4 °C (117.3 °F) was recorded in Amareleja, although this might not be the hottest spot in summer, according to satellite readings.
Snowfalls occur regularly in the interior North and Center of the country in particular in the districts of Vila Real, Bragança, Viseu and Guarda. In winter temperatures may drop below −10 °C (14.0 °F) in particular in Serra da Estrela, Serra do Gerês and Serra de Montesinho. In these places snow can fall any time from October to May. In the south of the country snowfalls are rare but still occur in the highest elevations.
The sea surface temperature on the west coast of mainland Portugal varies from 13 °C (55.4 °F)-15 °C (59.0 °F) in winter to 18 °C (64.4 °F)-20 °C (68.0 °F) in the summer while on the south coast it ranges from 15 °C (59.0 °F) in Winter and rises in the summer to about 23 °C (73.4 °F) occasionally reaching 26 °C (78.8 °F).
Both the archipelagos of the Azores and Madeira have a subtropical climate, although variations between islands exist, making weather predictions very difficult (owing to rough topography). The Madeira and Azorean archipelagos have a narrower temperature range, with annual average temperatures exceeding 20 °C (68 °F) along the coast (according to the Portuguese Meteorological Institute). Some islands in Azores do have drier months in the summer. Consequently, the island of the Azores have been identified as having a Mediterranean climate (both Csa and Csb types), while some islands (such as Flores or Corvo) are classified as Maritime Temperate or Humid subtropical, respectively, according to Koppen-Geiger classification. Porto Santo island in Madeira has a semi-arid Steppe climate (BSh). The Savage Islands, which are part of the regional territory of Madeira are unique in being classified as a Desert climates (BWh) with an annual average rainfall of approximately 150 mm (5.9 in). The sea surface temperature in the archipelagos varies from 17 °C (62.6 °F)-18 °C (64.4 °F) in winter to 24 °C (75.2 °F)-25 °C (77.0 °F) in the summer occasionally reaching 26 °C (78.8 °F).
source: wikipedia / Portugal weather