May, 2009 in Belize was atypical.  The first nine days were fair with only isolated showers. On the seventh, however, a low level feature supported showers over the central area of the country.  The Belize Zoo and Hummingbird Hershey stations reported over an inch of rainfall.  The international airport was the only other station to record rainfall, which was a mere millimeter.

On the tenth night, an upper level low moved over the area, bringing increased instability and moisture to the region. This supported outbreaks of showers and thunderstorms across the country. Showers continued to affect the country up until the twelfth.  The bulk of rainfall was at Hummingbird Hershey on the tenth. This bout of rainfall produced  slight flooding along the Sittee River during this period.

The weather improved on the thirteenth and generally good weather prevailed from this day until the seventeenth. On this night, a cold front moved in to the southern Gulf of Mexico and induced a pre-frontal trough east of its location. This supported increased instability and moisture to the area, which in turn supported outbreaks of showers and thunderstorms across the country on the eighteenth. Rainfall ranged from zero millimeters(mm) at Barton Creek and the Belize Zoo to 32.1mm  at Libertad in the North. The front dissipated, but a large area of low pressures developed over the Gulf of Mexico and the Northwest Caribbean. 

As from the nineteenth, these low pressures supported light and variable winds, along with cool night-time temperatures and high day-time temperatures. When a low developed in the Gulf of Mexico, west of Florida, moisture was sucked away from the area. This supported minimal rainfall up to the end of the month. Only isolated thunderstorms developed over the Maya Mountains during this period.

Conditions this month were atypical in that rainfall amounts were below normal. One can conclude that the country was experiencing a drought. Temperatures on the other hand were more or less in range, except for a couple nights and days when they were slightly cooler and higher than normal, respectively.