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Has the climate in Suzhou changed?

Suzhou has warmed about 3°F since 1991.

About 0.9°F per decade, measured from Suzhou's official daily weather records, 1991–2025. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.

Is that a lot? Suzhou's climate has warmed faster than most other cities in China.

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.

Freezing nights
5 more nights
1970s
19 / yr
Recent
24 / yr
Colder winters — more frosts
Average temperature
+2.0°F
1970s
62.1°F
Recent
64.1°F
A steady upward drift
Hot days above 90°F
7 more days
1970s
33 / yr
Recent
40 / yr
More days of serious heat
Rainy days
15 more days
1970s
114 / yr
Recent
129 / yr
Wetter on average

Suzhou's temperature, year by year

Average temperature for each year from 1991 to 2025.

59°61°63°65°67°1991: 61.1°F1992: 60.9°F1993: 60.6°F1994: 63.1°F1995: 61.5°F1996: 61.3°F1997: 62.6°F1998: 64.0°F1999: 62.1°F2000: 63.0°F2001: 63.1°F2002: 63.8°F2003: 62.8°F2004: 63.5°F2005: 62.9°F2006: 64.4°F2007: 64.8°F2008: 63.1°F2009: 63.4°F2010: 63.1°F2011: 62.6°F2012: 62.4°F2013: 63.7°F2014: 62.7°F2015: 62.7°F2016: 63.8°F2017: 64.0°F2018: 63.9°F2019: 63.3°F2020: 64.1°F2021: 64.7°F2022: 64.5°F2023: 63.7°F2024: 65.2°F2025: 65.6°Flong-term trend19912000201020202025
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.

When in the year the change shows up

How much warmer each month is now than in the 1970s. Useful if you garden or care about a particular season — otherwise the headline above already has the answer.

-1.0°-0.5°0.0°+0.5°+1.0°+1.5°+2.0°January: +0.3°F+0.3JFebruary: +0.7°F+0.7FMarch: +1.6°F+1.6MApril: +1.1°F+1.1AMay: +0.8°F+0.8MJune: +1.1°F+1.1JJuly: +1.2°F+1.2JAugust: +0.9°F+0.9ASeptember: +0.6°F+0.6SOctober: +0.6°F+0.6ONovember: +0.5°F+0.5NDecember: -0.7°F-0.7D

March has warmed the most — about 1.6°F. The warming runs across the whole year, not just one season.

Methodology & sources

Temperature — 1991–2020 normals computed from 24 years of daily observations at Shanghai, a weather station, about 83 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →