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Has the climate in Halifax changed?

Halifax has warmed about 0.6°F between 1999 and 2019.

About 0.3°F per decade, measured from Halifax's official daily weather records, 1999–2019. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.

Is that a lot? Halifax's warming is broadly in line with other cities in Canada — neither unusually fast nor unusually slow.

What has actually changed

Each card compares the 1970s (the first ten years of the record) with recent years (the last ten) — the same span the headline and the chart use.

Average temperature
about the same
1970s
45.3°F
→
Recent
45.4°F
Year-round temperature has barely moved

Halifax's temperature, year by year

Average temperature for each year from 1999 to 2019.

39°41°43°45°47°49°1999: 47.5°F2000: 45.6°F2001: 45.8°F2002: 45.1°F2003: 43.6°F2004: 44.1°F2005: 45.4°F2006: 43.7°F2007: 43.2°F2008: 46.5°F2009: 45.7°F2010: 47.9°F2011: 46.8°F2012: 47.5°F2013: 46.1°F2014: 45.7°F2015: 40.9°F2016: 46.2°F2017: 45.8°F2018: 46.2°F2019: 46.8°Flong-term trend1999200020102019
a warmer-than-average year a cooler-than-average year

Each bar is one year. Most recent years sit above the older ones. Some recent years still came in cool — warming is a slope, not a straight climb.

Methodology & sources

Temperature — 1991–2020 normals computed from 17 years of daily observations at Lake Major, a weather station, about 12 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →