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Has the climate in Nanaimo changed?

Nanaimo has cooled about 0.8°F between 1992 and 2020.

About 0.3°F per decade, measured from Nanaimo's official daily weather records, 1992–2020. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.

Is that a lot? Nanaimo's climate has warmed more slowly than most other cities in Canada.

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
−0.3°F
1970s
52.7°F
Recent
52.4°F
A small downward drift

Nanaimo's temperature, year by year

Average temperature for each year from 1992 to 2020.

44°46°48°50°52°54°56°1992: 55.4°F1993: 52.6°F1994: 53.3°F1995: 52.7°F1996: 50.6°F1997: 52.9°F1998: 54.4°F1999: 51.4°F2000: 51.5°F2001: 51.4°F2002: 51.7°F2003: 51.9°F2004: 53.4°F2005: 50.4°F2006: 53.7°F2007: 45.2°F2008: 48.6°F2009: 51.3°F2010: 52.0°F2011: 50.9°F2012: 50.0°F2013: 52.7°F2014: 52.9°F2015: 53.8°F2016: 53.2°F2017: 52.0°F2018: 52.8°F2019: 52.2°F2020: 52.3°Flong-term trend1992200020102020
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 25 years of daily observations at Entrance Island, a weather station, about 11 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →