Belize City Temperature by Month

The average annual maximum temperature in Belize City, Belize Province, Belize is 30°C (86°F), with little variation between seasons. This page covers monthly averages, day-night differences, and how Belize City compares to cities worldwide.

With little seasonal fluctuation, Belize City offers a predictable and steady climate. Maximum daytime temperatures reach a very warm 31°C (88°F) in August and a comfortable 28°C (82°F) in January. At night, lows range from 26°C (79°F) to 23°C (73°F) throughout the year.

The chart below illustrates the average maximum day and minimum night temperatures in Belize City by month:

From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak. August, the warmest month, averages 240 hours of sunshine.

The chart below shows the average temperature throughout the year:

Belize City's average annual maximum temperature is 30°C (86°F). To put that in context, here's how it compares to a few well-known destinations:

Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.

Queenstown, New Zealand averages 10°C (50°F) annually, remember seasons are flipped, so its coldest months fall in June and July.

Seoul, South Korea averages 18°C (64°F) a year, with four clear seasons, cold winters, and hot humid summers.

Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.

Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.

In Belize City, January is the coolest month, with average highs of 28°C (82°F) and humidity around 83%, considered very high. In August, the warmest month, temperatures average 31°C (88°F) with 84% humidity, conditions that feel very high. For a full picture, see our humidity page.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Global average temperatures have risen by around 1.2°C since the pre-industrial era, and the effects are visible across many regions. Winters are milder on average, with fewer frost days and less snow in many parts of the world. Heatwaves are more frequent and more intense, and Europe's summers of 2018, 2019, and 2020 all set records.

Summers are also getting drier in some areas, while winter rainfall has increased in others. This contributies to higher river levels and more flooding. In many countries, spring arrives earlier and autumn lasts longer. It has knock-on effects for wildlife, agriculture, and local ecosystems.

For more on Belize City's weather, including monthly rainfall, sunshine hours, and humidity, visit our Belize City climate page.