Belize City weather in September
September in Belize City: hot, soaked, with clean air — a gamble, with 27 rainy days.
#10 of 12 months in Belize City · #770 of 897 destinations to visit in September · comfort 62/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Belize City in September
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Belize City climate normals — September
| Daytime high | 30°C / 86°F | 🥵 hot |
|---|---|---|
| Nighttime low | 26°C / 78°F | |
| Rainfall | 193 mm / 7.6 in | ⛈ soaked |
| Rainy days | 27 days | |
| Humidity | 86% | 💦 very humid |
| Dew point | 25°C / 77°F | |
| Sunshine | 10.7 h/day | |
| Daylight | 12.2 h | |
| Wind | 16 km/h / 10 mph | |
| Air quality (US AQI) | 31 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Belize City in September — FAQ
- Is September a good time to visit Belize City?
- September in Belize City: hot, soaked, with clean air — a gamble, with 27 rainy days. It ranks #10 of 12 months for Belize City on SeasonMap's comfort score (62/100).
- What is the weather like in Belize City in September?
- In September, Belize City averages a daily high of 30°C and a low of 25.7°C, with about 192.7 mm of rain over roughly 27.2 rainy days.
- What is the air quality in Belize City in September?
- Belize City has a mean US Air Quality Index of about 31 in September.