To assist in planning your visit here is a brief weather calendar. As with anything involving the weather it will not be 100% accurate for any given year, but it does provide a snapshot of Belizean weather.
January in Belize features mild temperatures and varying amounts of rainfall. This is the beginning of the dry season – not too dry and not yet wet, and is a very popular month for visitors both inland and on the coast.
January temperatures in Belize range from an average monthly low of 70°F (21°C) to a high of 80°F (27°C).
Now we’re moving into the dry season, and February temperatures in Belize average between 70°F (21°C) and 80°F (27°C). Days are generally mild, and with the cooler nights it is a very pleasant time of year.
March weather in Belize is as pleasant as February’s. Right in the middle of the dry season, the day and nights are clear and uninterrupted by rain.
Belize temperatures for March fall between 83°F (28°C) during the day and 74°F (23°C) at night.
April in Belize brings rising temperatures and the welcome “Iguana Rains”, the brief, cooling showers appearing up and down along the coast. Expect average highs of 85°F (29°C) and lows of 76°F (24°C) with an overall monthly average of about 80°F (27°C).
May temperatures in Belize climb to an average high of 87°F (31°C) and fall to around 79°F (26°C), with an overall monthly average of 82°F (28°C). If there is rain, it will most likely be in the morning, with the occasional thunderstorm at night.
This is another warm month, with June temperatures in Belize averaging 86°F (30°C) to 82°F (28°C). However, fresh easterly breezes off the Caribbean Sea and more frequent short afternoon showers moderate the temperatures and make June a generally pleasant month.
July temperatures in Belize range from an average high of 86°F (30°C) to lows of 79°F (26°C) with an overall monthly average of 82°F (28°C). The weather is much the same as June with increasing rainfall, especially in the mornings, and the easterly breezes providing relief from the heat. Thunderstorms may begin appearing at night.
During August temperatures in Belize begin to change as drier winds from the west replace the easterly sea breezes. August marks the “Little Dry”, as it is known, with a decrease in rainfall and rise in temperatures, which range from 86°F (30°C) highs to average lows of 78°F (26°C). Overall average temperature for August is still a pleasant 82°F (28°C).
September temperatures in Belize average around 81°F (27°C), with highs of 86°F (30°C) and lows of 77°F (25°C). There is increasing rainfall, especially in early mornings and at night, but most days are sunny with warm temperatures.
Northerly breezes bring heavier rainfall, and October temperatures in Belize cool down to a monthly average of 79°F (26°C). Daytime highs of around 84°F (29°C) and lows of 75°F (24°C) are common, as are occasional “northers”, two or three day storms often centred around the Maya Mountains.
November temperatures in Belize are some of the lowest and most variable of the year, but the monthly average is still an enjoyable 76°F (24°C), with common daytime highs of 82°F (28°C) and evening lows of 73°F (23°C). While this heralds in winter for the people of Belize visitors coming from northern climes find it quite warm and sunny.
December usually arrives wet and leaves drier as the wet season begins to wind down. December temperatures in Belize fall to an average low of 71°F (22°C) with highs of 80°F (27°C) for a monthly average of around 75°F (24°C) – the perfect weather to enjoy a comfortable Christmas holiday, warm enough for swimming and with pleasantly cool evenings.