of the city. Downtown (Saddar) observatory in south Karachi received an accumulation of 66 mm for the month, however, the record for the highest rainfall in April stands unbroken because the record of 52.8 mm in 1935 was set at the Airport observatory, while the total rainfall recorded at the Airport in April 2013 was 29 mm. The April 2015 was very warm in Karachi, as it was 2.4 °C warmer on average compared to a standard April. May May is the hottest month in Karachi, with temperatures touching .The highest temperature was recorded on 9 May 1938, when temperatures reached while the lowest temperature was , recorded on 4 May 1989. The humidity in the month is quite high, often surpassing 60% and coupled with temperatures ranging between 35 and 37 °C, the heat indices are generally quite high, making the outdoors highly uncomfortable. Rainfall in May is a rare occurrence. Recently, a very strong thunderstorm affected the metropolis during the early hours of 2 May 1997. 40 mm rainfall was recorded at Masroor Base, while the Airport received 6 mm rain. The highest monthly rain that occurred was in May 1933, when rain lashed the city. In 1999, 2001 and 2010, three major cyclones formed that came close to Karachi. The 1999 cyclone (the fourth strongest cyclone of the Arabian Sea) hit close to Karachi, along the coast of Thatta and Keti Bandar giving massive rainfall and causing widespread damage in these areas while the city of Karachi only received very strong NE winds, with light showers (traces). 2001 Indian Ocean cyclone was the third strongest cyclone of the Arabian Sea, that made landfall near the Indian border. Cyclone Phet formed in May 2010, about 1100 km away from Karachi. It travelled along the coast, striking Oman then affecting the coast of Balochistan, giving record-breaking rain amounts there. Gwadar, for instance, got 372 mm rainfall in 36-hours. In May 1902, a cyclonic storm struck the coast in the vicinity of Karachi. June The temperatures of June are almost identical to May, with just a slight decrease. The highest temperature of June was , recorded on 18 June 1979, and the lowest was , recorded on 3 June 1997. On 6 June 2010, Cyclone Phet came close to the coast of Karachi as a tropical depression, at about 50 km away from the city after a week-long journey. About