Climate

Climate Types:

What kinds of climates exist in Haiti? How uniform is the climate across the country? 

Map of Various Climates and Land Use in Haiti. Found at Learn from Nature.

Haiti's has both tropical and semiarid climates. Various types of climates in Haiti are savannas, forests, and marsh/swamp lands (Learn from Nature). The range of climates are attributed to Haiti's mountains and proximity to the Atlantic Ocean and Caribbean Sea. Haiti's Eastern slopes prevent tradewinds from traveling further inland, thus making the Windward coasts tropical and the Leeward coast semiarid (World Factbook). 

Seasonality: 

What is the annual range of temperature and precipitation for Port-au-Prince and  Port-de-paix? Do these cities experience large or small seasonality? 
How does the annual temperature and precipitation for both cities compare to Honolulu (Hawaii,USA)?

Port-au-Prince experiences a relatively stable annual range of temperature. The annual range of temperatures is 4°C.  The lowest temperatures occur in January and December (about 31°C), and peak in June, July, and August (about 35°C). The annual range of precipitation is 272.5 mm. The highest average levels of precipitation occurs in May (about 200mm) and the lowest average levels occurs in January (about 37.5mm). Port-au-Prince experiences a rainy season during the summer and a dry season during the winter, thereby experiencing a relatively small seasonality (World Weather and Climate Information).

Port-de-Paix also experiences a relatively stable annual range of temperature. The annual range of temperature is 3.5°C. The lowest average annual temperature occurs in January (24°C)  and the highest average annual temperature occurs in August (27.5°C).  The annual range of precipitation is 152mm. The highest average levels of precipitation occurs in November (average of 219mm), while the lowest average levels of precipitation occurs in March (average of 67 mm). The city receives a lot of rain throughout the year, experiencing small seasonality (Climate-Data.org).

Average annual range for temperature in Honolulu is 5.0°C .  The hottest month (for Downtown Honolulu) is August  with an average of 27.8 °C. The coldest month on average is February with an average of 22.8 °C (coolweather.net). The annual range of precipitation for Honolulu is 139.4 mm. The lowest levels of precipitation is in December, averaging 131.6mm. The highest levels of precipitation is in December, averaging 271.0mm (weatherdb.).
Therefore, Port-au-Prince is relatively more warmer and rainier than Honolulu, while Port-de-Paix is relatively similar to Honolulu in terms of temperature and precipitation. all three cities experience a relatively low annual range of temperature.