How extreme does İzmit's weather get?

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

Based on 22 years of daily weather observations (2003–present), from the Cengiztopel station 10 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 İzmit has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day

105°F Jul 23, 2025

The three most extreme on record

1 105°F Jul 23, 2025recent

2 104°F Jul 9, 2025

3 104°F Jul 27, 2025

❄️ Coldest night

3°F Jan 2, 2016

The three most extreme on record

1 3°F Jan 2, 2016

2 7°F Jan 19, 2021

3 10°F Jan 20, 2021

🌧️ Most rain in one day

4.31 in Sep 30, 2015

The three most extreme on record

1 4.31 in Sep 30, 2015

2 4.13 in Oct 27, 2014

3 4.09 in Dec 30, 2016

In plain terms

Across the record, İzmit has reached as high as 105°F and as low as 3°F. A single day has delivered over 4 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 Ataturk, a weather station, about 96 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →

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