Sea Temperature

Chicago Sea Temperature

(Today) Dec 2019

7.8°C / 46.0°F

Current weather

7°C / 45°F
(clear sky)

Partly cloudy

7 mph



The measurements for the water temperature in Chicago, Illinois are provided by the daily satellite readings provided by the NOAA. The temperatures given are the sea surface temperature (SST) which is most relevant to recreational users.

Monthly average max / min water temperatures

The graph below shows the range of monthly Chicago water temperature derived from many years of historical sea surface temperature data.

Maximum and minimum monthly sea temperatures in Chicago
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 3 1.4 1.9 2.5 4.3 7.8 18.1 21.6 17.5 11.5 6.9 3.1
Max °C 4.8 4 4.5 7.4 9.9 20.5 24.9 24.9 23.2 18.4 12.3 8.4
Min °F 38.1 35.6 36.5 38.4 42 51.1 67.3 72.2 65.7 55.4 46.6 39.7
Max °F 39.9 38.2 39.1 43.3 47.6 63.8 74.1 75.5 71.4 62.3 52 45

Average December sea temperatures

  • Max: 8.4°C / 47°F
  • Avg: 5.7°C / 42.3°F
  • Min: 3.1°C / 37.5°F
Chicago average sea temperature chart

These average ocean temperatures for Chicago are calculated from several years of archived data.

Map showing location of Chicago (41.850030, -87.650050)

Locations nearby


Whilst sea temperatures for Chicago are as accurate as current data allows, there may be slight local and regional variations depending on conditions. Time of day and wind direction may have a temporary local effect as can water flows from neraby rivers.

Alternate names for Chicago
CHI, Chi-ka-ko, Chi-kâ-kô, Chicago, Chicagu, Chikago, Cikaga, Cikago, Cikaqo, Gorad Chykaga, Kikako, Sicagum, Sikago, Tsikago, Windy City, chikhako, cikago, cikako, shikago, shkagw, shykaghw, shykagw, shykajw, shyqgw, sikago, sikkagea, syqgw, zhi jia ge, Çikaqo, Ĉikago, Čikaga, Čikāga, Şikago, Σικάγο, Горад Чыкага, Чикаго, Чикаґо, Չիկագո, שיקאגא, שיקגו, شيكاجو, شيكاغو, شکاگو, شیکاگو, ܫܝܩܓܘ, शिकागो, শিকাগো, சிகாகோ, చికాగో, ഷിക്കാഗോ, ชิคาโก, ရှီကာဂိုမြို့, ჩიკაგო, ᓰᖄᑯ, Ṣìkágò, シカゴ, 芝加哥, 시카고

Chicago average sea temperature chart