Belize City Weather in September
Belize City in September averages 31°C (88°F) during the day and 26°C (79°F) at night. September is part of the rainy season, so frequent rainfall is typical.
Rainfall in Belize City in September
Belize City is in the rainy season in September, with rain on around 18 days and an average of 237 mm (9.3 in). The rainy season here brings regular, substantial showers. It's worth being prepared for rain on most days you're out.
Temperature in Belize City in September
In September, Belize City gets very high temperatures, with highs of 31°C (88°F). Nights cool to around 26°C (79°F). It's usually most comfortable outside during the morning and later in the day. At 26°C (79°F) overnight, the heat doesn't let up much after dark. If you're staying somewhere without air conditioning, a cold shower before bed and keeping the air moving can help. Average temperatures can be deceiving; some days will be hotter. Wear breathable fabrics and drink plenty of water to stay cool.
Sunshine in Belize City in September
The area enjoys a moderate level of sunlight, with around 180 hours. It's a good balance between sunny and rainy days.September in Belize City has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Belize, check out our Belize City's climate page.
Belize City Temperature in September
Min Temperature
26°C (79°F)
Max Temperature
31°C (88°F)
Chance of Rain
60%
Precipitation
237 mm (9.3 in)
Rainy days
18 days
Humidity
84%
Sunshine
180 hours
Percentage Sunshine
Daily Historical Temperatures
42-year average (1976-2025)
Based on our historical records, temperatures in Belize City typically stay consistent throughout September, with daily highs averaging around 31°C (88°F). Nights are warm, with lows around 25°C (77°F).
Average temperatures in September
Daily Historical Precipitation
42-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Belize City in September
Browse day-by-day weather records for Belize City spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Belize City historical weather extremes in September
Our historical data for Belize City spans 1993 to 2025, revealing these weather extremes.
- On September 14, 2004, temperatures climbed to 35°C (95°F), marking the warmest September day on record.
- Belize City experienced its chilliest September day on September 17, 1993, reaching only 25°C (77°F).
- Belize City registered its coldest September night on September 1, 1997, with temperatures dropping to 22°C (72°F).
Best Places in Belize in September
Find out more about the weather in Belize and which places have the best travel conditions in this month. See all of Belize in September →
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What to Wear in Belize City in September
Warm but pleasant conditions in Belize City in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Belize City in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Belize, check out our Belize City's climate page.
Temperature Rainfall Sunshine Humidity
See the full Belize City climate overview or explore weather in Belize.
