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File: atlantic-temperatures-seasonal-cycle-event-tracker.jpg

Line graph showing how equatorial Atlantic temperatures peak in spring and cool off in summer

Image caption

Monthly average sea surface temperature in the eastern equatorial Atlantic between 1982-2023 (black) and during 2024 (red and blue markers). Red colors indicate warmer than normal waters, while blue colors indicate colder than normal waters. The gray area represents the ±0.5 degrees Celsius (±0.9 degrees Fahrenheit) threshold that needs to be exceeded in order to qualify as an Atlantic Niño/Niña. Image by Franz Philip Tuchen.