September · Belize
Best time to visit Belize City in September Weather, crowds & prices
Weather in Belize City in September
Average temperature 29°C, 218 mm of rain, about 21 days with 6+ hours of sunshine and 83% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
3.1/10
Ranked #10 of 12 months
- Avg temp
- 29°C
- Rainfall
- 218 mm
- Humidity
- 83%
- Days with 6h+ sun
- 21
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
September in Belize City scores 3.1/10 for sightseeing and cultural travel - ranked #10 of 12. Expect around 29°C, 218 mm of rain, and roughly 21 days with 6+ hours of sunshine this month.
Belize City is the country’s bustling coastal hub-canal streets, museums, and the launch point for cayes and inland ruins. Best window: the drier months outside peak monsoon.
September in Belize City — off-season conditions
Days in September average 29°C (84°F) and humidity near 83% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
This is the year's wettest stretch at 218 mm, but with about 21 days with 6+ hours of sunshine it is not a total loss; an indoor fallback covers the risk.
That is 3.1/10 on the same scale — 10th of 12 months, versus 6.7/10 for the best month here.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
Expect low-season pricing, and crowds are light for this destination.
If your dates are flexible, April is materially better in Belize City — 3.6 points higher on the same scale.
Frequently asked
- What is the weather like in Belize City in September?
- In September, Belize City averages 29°C, 218 mm of rain, and about 21 days with 6+ hours of sunshine. Its climate-comfort score is 3.1/10.
- Is September a good time to visit Belize City?
- September earns a 3.1/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Belize City in September?
- Expect about 218 mm of rain in September. Average humidity is 83% and there are about 21 days with 6+ hours of sunshine.
Curated in Belize City
Tickets & experiences
Things to do in Belize City
Belize City, Belize. Live activities and tours from GetYourGuide, matched to this destination.