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Weather extremes

How extreme does Haiphong's weather get?

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

Based on 34 years of daily weather observations (1991–present), from the Phu Lien station 9 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 Haiphong has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
112°F Jun 12, 2022

That is about 21°F hotter than a normal June afternoon in Haiphong (typical high near 90°F).

The three most extreme on record

1 112°F Jun 12, 2022recent
2 104°F May 21, 1998
3 104°F Jul 13, 2015
❄️ Coldest night
32°F Jan 22, 1994

About 26°F colder than a normal January night in Haiphong (typical low near 58°F).

The three most extreme on record

1 32°F Jan 22, 1994
2 33°F Dec 25, 1999
3 40°F Jan 24, 2016
🌧️ Most rain in one day
10.18 in Jul 21, 2018

More rain in a single day than Haiphong usually gets in the whole month of July (typical July total about 9.2 in).

The three most extreme on record

1 10.18 in Jul 21, 2018
2 8.98 in Jun 9, 2024
3 8.43 in Sep 11, 2024

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 112°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Haiphong's record heat sits well above even a hot day for the season — June's 112°F is about 21°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, Haiphong's warmest days reach the low 90s°F and its coldest nights drop to the high 50s°F. But across the record it has gone as high as 112°F and as low as 32°F. A single day has delivered over 10 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 Phu Lien, a weather station, about 9 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →