Climate The Slovak climate lies between the temperate and continental climate zones with relatively warm summers and cold, cloudy and humid winters. Temperature extremes are between although temperatures below are rare. The weather differs from the mountainous north to the plains in the south. The warmest region is Bratislava and Southern Slovakia where the temperatures may reach in summer, occasionally to in Hurbanovo. During night, the temperatures drop to . The daily temperatures in winter average in the range of to . During night it may be freezing, but usually not below . In Slovakia, there are four seasons, each season (spring, summer, autumn and winter) lasts three months. The dry continental air brings in the summer heat and winter frosts. In contrast, oceanic air brings rainfalls and reduces summer temperatures. In the lowlands and valleys, there is often fog, especially in winter. Spring starts with 21 March and is characterised by colder weather with an average daily temperature of in the first weeks and about in May and in June. In Slovakia, the weather and climate in the spring are very unstable. Summer starts on 22 June and is usually characterised by hot weather with daily temperatures exceeding . July is the warmest month with temperatures up to about , especially in regions of southern Slovakia - in the urban area of Komárno, Hurbanovo or Štúrovo. Showers or thunderstorms may occur because of the summer monsoon called Medardova kvapka (Medard drop - 40 days of rain). Summer in Northern Slovakia is usually mild with temperatures around (less in the mountains). Autumn in Slovakia starts on 23 September and is mostly characterised by wet weather and wind, although the first weeks can be very warm and sunny. The average temperature in September is around , in November to . Late September and early October is a dry and sunny time of year (so-called Indian summer). Winter starts on 21 December with temperatures around . In December and January, it is usually snowing, these are the coldest months of the year. At lower altitudes, snow does not stay the whole winter, it changes into the thaw and frost. Winters are colder in the mountains, where the snow usually lasts until March or April and the night temperatures fall to and colder. Examples Biodiversity Slovakia signed the Rio Convention on Biological Diversity on 19 May 1993, and became a party to the