Climate
The Falkland Islands have a maritime climate in the transition region between the temperate and subarctic zones (Köppen classifications Cfb and Cfc respectively) which is characterised by both low seasonal and diurnal temperature ranges and no marked wet and dry season while in the sub-arctic zone the average monthly maximum temperature exceeds 10 °C (50 °F) for no more than four months of the year and the average monthly minimum does not drop below −3 °C (27 °F). The Falkland Islands climate is very much influenced by both the cool ocean currents and the shielding effect of the Andes.
The cold Antarctic Coastal Current flows in an easterly direction around Cape Horn where part of it is diverted northwards as the Falklands Current. Subsurface temperatures in the vicinity of the Falklands are of the order of 6°C. The Falklands Current meets the warm South Brazilian Current at about 40°S, some 1,000 km (620 mi) north of the islands. The prevailing winds at the Falklands' latitude are the westerlies that gather moisture across the Pacific Ocean, but the Andes form a 4,000 m (13,000 ft) barrier causing a rain shadow across the Patagonia and to a lesser extent, the Falkland Islands.
The January average maximum temperature is about 13°C (55°F), and the July maximum average temperature is about 4°C (39°F). The rainfall varies between 300 mm in parts of Lafonia to 1400 mm in the mountain ranges with an average annual rainfall of 573 mm. Humidity and winds, however, are constantly high. Snow is rare but can occur at almost any time of year. Gales are very frequent, particularly in winter.
In addition to parts of the Falklands, a maritime subarctic climatic zone is found in parts of coastal Iceland, Faroe Islands, north western coastal Norway, southern islands of Alaska and parts of the Alaskan Panhandle, the southern tip of South America and mountainous areas of Europe including the Scottish Highlands and south-western Norway.
| Climate data for Stanley, Falkland Islands | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °C (°F) | 24 (75) |
23 (73) |
21 (70) |
17 (63) |
14 (57) |
11 (52) |
10 (50) |
11 (52) |
15 (59) |
18 (64) |
22 (72) |
22 (72) |
24 (75) |
| Average high °C (°F) | 13 (55) |
13 (55) |
12 (54) |
9 (48) |
7 (45) |
5 (41) |
4 (39) |
5 (41) |
7 (45) |
9 (48) |
11 (52) |
12 (54) |
8.9 (48.1) |
| Average low °C (°F) | 6 (43) |
5 (41) |
4 (39) |
3 (37) |
1 (34) |
−1 (30) |
−1 (30) |
−1 (30) |
1 (34) |
2 (36) |
3 (37) |
4 (39) |
2.2 (35.9) |
| Record low °C (°F) | −1 (30) |
−1 (30) |
−3 (27) |
−6 (21) |
−7 (19) |
−11 (12) |
−9 (16) |
−11 (12) |
−11 (12) |
−6 (21) |
−3 (27) |
−2 (28) |
−11 (12) |
| Precipitation mm (inches) | 71 (2.8) |
58 (2.28) |
64 (2.52) |
66 (2.6) |
66 (2.6) |
53 (2.09) |
51 (2.01) |
51 (2.01) |
38 (1.5) |
41 (1.61) |
51 (2.01) |
71 (2.8) |
681 (26.81) |
| % humidity | 78 | 79 | 82 | 86 | 88 | 89 | 89 | 87 | 84 | 80 | 75 | 77 | 82.8 |
| Source: BBC Weather | |||||||||||||
Read more about this topic: Geography Of The Falkland Islands
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