Friday 12 July 2013

Geography

Florianópolis Climate chart (explanation) J F M A M J J A S O N D     176   28 21     197   28 21     186   27 20     96   25 18     96   23 15     75   20 13     94   20 13     92   20 14     126   21 15     116   22 16     98   24 18     146   26 20 Average max. and min. temperatures in °C Precipitation totals in mm Source: MSN Weather Imperial conversion J F M A M J J A S O N D     6.9   82 70     7.8   82 70     7.3   81 68     3.8   77 64     3.8   73 59     3   68 55     3.7   68 55     3.6   68 57     5   70 59     4.6   72 61     3.9   75 64     5.7   79 68 Average max. and min. temperatures in °F Precipitation totals in inches Climate

Florianópolis experiences a warm humid subtropical climate, falling just short of a true tropical climate. The seasons of the year are distinct, with a well-defined summer and winter, and characteristic weather for autumn and spring. Frost is infrequent, but occurs occasionally in the winter. Due to the proximity of the sea, the relative humidity of the atmosphere is 80% on average.

The maximum temperatures of the hottest month varies from 25 °C (77 °F) to 40 °C (104 °F) and the minimum temperatures are from 6 °C (43 °F) to 11 °C (52 °F). The lowest temperature ever recorded was −2 °C (28 °F), in 1975.

Precipitation

There is significant precipitation which is well distributed throughout the year. The annual normal precipitation for the period of 1911 through 1984 was 1,521 millimetres (59.9 in). There is no dry season, and summer generally is the rainiest season. Increased rainfall occurs from January to March, with a median of 160 millimetres (6.3 in) per month, and from April to December there is somewhat less precipitation, averaging 100 millimetres (3.9 in) per month. The driest months are from June to August.

Vegetation

Florianópolis has a native Atlantic Forest-type vegetation. This vegetation has an extremely diverse and unique mix of vegetation and forest types. The main ecoregion is the coastal Atlantic forest, the narrow strip of about 50–100 kilometers (31–62 miles) along the coast which covers about 20 percent of the region. This forests extend as far as 500–600 kilometers (310–372 miles) inland and its range is as high as 2,000 meters above sea level. Altitude determines at least three vegetation types in the Atlantic Forest: the lowland forest of the coastal plain, montane forests, and the high-altitude grassland or "campo rupestre".

Climate data for Florianópolis Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Record high °C (°F) 38.3 (100.9) 38.9 (102) 33.1 (91.6) 31.8 (89.2) 30.7 (87.3) 30 (86) 31.8 (89.2) 31.2 (88.2) 28.8 (83.8) 30 (86) 32.1 (89.8) 35.7 (96.3) 38.9 (102) Average high °C (°F) 28 (82) 28.4 (83.1) 27.5 (81.5) 25.4 (77.7) 23 (73) 20.9 (69.6) 20.4 (68.7) 20.7 (69.3) 21.2 (70.2) 22.9 (73.2) 24.8 (76.6) 26.6 (79.9) 24.15 (75.4) Daily mean °C (°F) 24.9 (76.8) 25.1 (77.2) 24.1 (75.4) 21.8 (71.2) 19.3 (66.7) 17.1 (62.8) 16.8 (62.2) 16.0 (60.8) 17.3 (63.1) 19.9 (67.8) 21.7 (71.1) 23.4 (74.1) 20.62 (69.1) Average low °C (°F) 21.4 (70.5) 21.8 (71.2) 20.7 (69.3) 18.3 (64.9) 15.6 (60.1) 13.4 (56.1) 13.3 (55.9) 14 (57) 15.1 (59.2) 16.9 (62.4) 18.6 (65.5) 20.3 (68.5) 17.45 (63.38) Record low °C (°F) 14.7 (58.5) 15.6 (60.1) 10.1 (50.2) 7.8 (46) 5.2 (41.4) 2 (36) 1.5 (34.7) 3.9 (39) 0.7 (33.3) 9 (48) 9.5 (49.1) 12.5 (54.5) 0.7 (33.3) Precipitation mm (inches) 176.2 (6.937) 197.7 (7.783) 186.3 (7.335) 96.6 (3.803) 96.9 (3.815) 75.2 (2.961) 94.6 (3.724) 92.5 (3.642) 126.8 (4.992) 126 (4.96) 129.1 (5.083) 146.2 (5.756) 1,544.1 (60.791) Avg. precipitation days (≥ 0.1 mm) 15 15 15 10 10 9 9 9 12 13 12 15 144 Source #1: World Meteorological Organization., Hong Kong Observatory (sun only 1961-1990) Source #2: BBC Weather (record highs, lows, and humidity)

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