East Timor Meteorology and Geophysics established firstly in Dili at 1861,there was Reading manual weather station about Air Pressure and Air Temperature only. December 9th, 1910 some instruments for meteorology necessary distributed to Dili. In 1914 four rainfall station fungtioned in East Timor, Dili, Ermera, Raimera and Hatolia. The number of rainfall station increase to 20 station in 1916, it was estableshed by Portuguese Army and Religion Mission. Since 1914 up to 1974 meteorology in east Timor has one observation meteorology office, located in Dili and Dili was the center of meteorology. Tow meteorology primer class (24 hours observation time) located in Bacau and Oecusi (Half day observation), some places had manual observation equipment but no office there and these equipments controlled by local people. At the time almost equipments were manual equipments. All data collection sent to central office in Dili then sent to Lisbon.
In 1975 East Timor war effected all meteorology services and activities and no activities or meteorology services by the time, but after one year later in Indonesia time at 1977 some off the station service activated by Indonesian army and re-active the meteorology services in this country and start to develop meteorology to be more modern and some station had modern equipments like Dili airport, dili heliport station, Baucau and Oecusi.
In Indonesian time all data collection sent to Jakarta to make forecast. Data collection at the time is climatology data, meteorology data for aviation and agro meteorology data. Since the referendum held on September 1999 all Meteorology Services were destroyed in Dili Capital and other districts in Timor-Leste. During the UNTAET period Timor-Leste meteorology service were provided by Bureau of Meteorology Australia (BoM) in Darwin (just for aviation) and since 2000 to early 2003 Meteorology and Geophysics under the National Directorate of aviation during.
