Month Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. sun hours 4 5 7 9 10 12 13 12 11 8 6 4 temperature (°C) 15 16 17 21 25 30 32 33 29 25 21 17 water (°C) 17 16 16 17 19 21 23 25 24 22 20 18 rainy days 12 10 9 8 4 2 1 1 5 8 10 12