Armagh Observatory and Planetarium marked a outstanding milestone this week, 230 years of day by day climate observations, with readings taken each single day since 14 July 1795. To have a good time the event, the Observatory hosted a particular gathering at its historic meteorological enclosure (“MET cage”) on Monday 14 July at 10 am, adopted by a Household Enjoyable Day on the Planetarium.

230 Years of Climate Recording 14 July 2025 Armagh Observatory and Planetarium Armagh CREDIT: LiamMcArdle.com
Meteorological measurements at Armagh started in December 1794, with an unbroken sequence of day by day climate readings beginning in July 1795, making this one of many longest steady local weather data within the British Isles.
“Reaching 230 years of uninterrupted climate data is a rare achievement,” mentioned Dr Kerem Osman Çubuk, Astronomy Communicator at Armagh Observatory and Planetarium.
“This archive is among the oldest and most constant local weather datasets globally, vital for understanding long-term local weather developments, planning our futures, and celebrating centuries of devoted observations.”

230 Years of Climate Recording 14 July 2025 Armagh Observatory and Planetarium Armagh CREDIT: LiamMcArdle.com
Since 1836, rainfall has been recorded day by day; humidity information (moist bulb) from 1838; and most and minimal day by day temperatures from 1844. Instrumentation has developed over time from primitive thermometers and barometers to a Stevenson Display (put in 1865) and a contemporary Met Workplace commonplace automated climate station, which was added in 2018. The Observatory was additionally formally recognised as a WMO Centennial Observing Station in 2018.

230 Years of Climate Recording 14 July 2025 Armagh Observatory and Planetarium Armagh CREDIT: LiamMcArdle.com
These attending the 14 July occasion had been invited to view the historic meteorological devices and study concerning the Observatory’s distinctive legacy of steady statement. The celebrations continued with a Household Enjoyable Day on the Planetarium.
Households additionally loved entry to Planetarium displays, the sensory room, and dome exhibits as a part of a full day of partaking and academic experiences.
This landmark event highlighted Armagh Observatory’s extraordinary scientific heritage and underscored its ongoing mission: to attach folks with local weather, area, and the marvel of scientific discovery.