Explore historical and projected climate data, climate data by sector, impacts, key vulnerabilities and what adaptation measures are being taken. Explore the overview for a general context of how climate change is affecting Belize.

Climate Data Historical

Belize is characterized by a moist tropical climate with a seasonal variation slightly different than other Caribbean countries. Its wet season occurs during the months of May to October and its dry season occurs during the months of November to April. The mean annual temperature ranges from 23-27°C, providing some variation throughout the country, with the coast generally exhibiting hotter temperatures than the interior. The El Niño Southern Oscillation (ENSO) heavily influences Belize’s climate, in addition to the intensification of the Inter-Tropical Convergence Zone (ITCZ). The El Niño phenomenon generally produces warmer conditions during the months of June to August, whereas La Niña produces wetter conditions typically associated with the tropical Atlantic cyclones. During the wet season, Belize usually receives mean monthly rainfall of 150-400 mm in the south of the country. The rest of the country receives less than 100 mm of rainfall per month, where precipitation is limited. Belize is prone to hurricane impacts since it lies in the direct path of the majority of Atlantic storms.


  • Mean annual temperatures have increased by 0.45°C at an average rate of 0.10°C per decade since 1960. 
  • The frequency of hot days and hot nights has increased by 67 days per year, respectively, between 1960 and 2003.
  • The frequency of cold days and cold nights has decreased by 21 days per year, respectively between 1960 and 2003. 


  • Mean annual rainfall over Belize has decreased at an average rate of 3.1 mm per month per decade since 1960, but this trend is not statistically significant. While all seasons appear to have shown decreasing precipitation trends since 1960, only February, March and April have a statistically significant trend.  
  • There is insufficient daily observational data to identify trends in all expects of rainfall extremes in Belize. The magnitude of maximum 5-day rainfall shows an increasing trend of 5.37 mm per decade over the period 1960 - 2006. 

This section provides the options to visualize historical climate data for different timeframes via map and annual cycle chart.


Click on map to change chart data from country aggregated to site-specific data.