Climate Overview
The climate in Belize City is hot. The average annual temperature is 27°C and approximately 1603mm of precipitation falls per year. Belize City receives a notable amount of rainfall throughout the year, including during its driest month. Belize City is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: May, September, August. The coldest months are January, December, February, when temperatures can drop to 21°C.
Temperature
Belize City sees moderate temperature variation throughout the year, ranging from 21°C to 32°C. The warmest month is May, when average highs reach 32°C and the mean temperature sits around 29°C. January is the coolest month, with minimum temperatures around 21°C and an average of 24°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows.
Precipitation
Belize City is a fairly wet location, receiving approximately 1603mm of precipitation annually, which averages out to around 134mm per month. The wettest month is October, averaging 257mm of rainfall. June and August also tend to see above-average precipitation. The driest month is March, with just 52mm. That's 205mm less than October, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall.
Wind
Belize City is relatively calm, with an average annual wind speed of 3km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is March, averaging 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.
Seasons
93 days until Autumn
It is currently summer in Belize City, which began on June 21, 2026. Belize City is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in May at around 32°C, while the coldest stretch bottoms out in January near 21°C. Autumn is next, beginning on September 23, 2026 — 93 days from now.
Spring
Temperatures range from 24 to 32°C. Precipitation is moderate at around 213mm for the season, averaging 71mm per month. Winds are generally light, averaging 4km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 26 to 31°C. Rainfall is heavy, totalling around 578mm across the season with a monthly average of 193mm. Winds are generally light, averaging 4km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 23 to 32°C. Rainfall is heavy, totalling around 601mm across the season with a monthly average of 200mm. Winds are generally light, averaging 3km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 21 to 29°C. Precipitation is moderate at around 211mm for the season, averaging 70mm per month. Winds are generally light, averaging 3km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Best Time to Visit
The best time to visit Belize City is during January and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 24°C with modest rainfall averaging 79mm per month. By contrast, May can be uncomfortably hot with temperatures reaching 32°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.
Monthly Climate Data
The table below shows monthly climate averages for Belize City based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
