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Weather extremes

How extreme does Dongguan's weather get?

The hottest, coldest, wettest and snowiest days Dongguan has recorded — the outer limits of what its weather can do, and how far they sit beyond a normal day.

Based on 50+ years of daily weather observations (1971–present), from the Guangzhou station 35 km away. Updated through August 2025 — an all-time extreme only changes when a more extreme day actually occurs, so some dates are old. That is normal, not stale data.

The four kinds of extreme

The hottest, coldest, wettest and snowiest single days Dongguan has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
102°F Jun 30, 2004

That is about 13°F hotter than a normal June afternoon in Dongguan (typical high near 89°F).

The three most extreme on record

1 102°F Jun 30, 2004
2 102°F Jul 1, 2004
3 102°F Jul 18, 2005
❄️ Coldest night
32°F Dec 23, 1999

About 22°F colder than a normal December night in Dongguan (typical low near 54°F).

The three most extreme on record

1 32°F Dec 23, 1999
2 33°F Jan 6, 1971
3 33°F Dec 29, 1991
🌧️ Most rain in one day
9.41 in Aug 23, 1999

About 94% of a typical August's rain in a single day (Dongguan averages roughly 10.0 in across the month).

The three most extreme on record

1 9.41 in Aug 23, 1999
2 8.92 in Jun 8, 2018
3 8.62 in May 21, 2020

How hot and cold it gets, month by month

The shaded band is the normal range of daily temperatures for each month. The dots show the most extreme it has ever been — so you can see how far beyond a normal day the records really sit.

10°30°50°70°90°110°130° all-time high 102°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Dongguan's record heat sits well above even a hot day for the season — June's 102°F is about 13°F beyond a normal hot afternoon. Its record cold is just as far below a normal winter night — the dots mark how rare each extreme really is.

In plain terms

In a normal year, Dongguan's warmest days reach the low 90s°F and its coldest nights drop to the low 50s°F. But across the record it has gone as high as 102°F and as low as 32°F. A single day has delivered over 9 inches of rain. Those are the outer edges worth knowing if you are moving here, planning a trip, or thinking about a house.
Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Baoan Intl, a weather station, about 43 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →