Cap-Haitien's climate is characterized by a relatively consistent temperature throughout the year, with minimal seasonal variation. The warmest months are May and August, with average temperatures ranging from 28-33°C, while the cooler months, January and December, have averages of 26-27°C. March and November see temperatures slightly below the annual average, with highs around 31°C and lows at 22°C. Summer-like conditions prevail during June to September, with temperatures often reaching 32°C or more. The temperature fluctuations are generally mild, with little drop in temperature from one season to another.