September · Belize
Best time to visit Belmopan in September Weather, crowds & prices
Weather in Belmopan in September
Average temperature 27°C, 214 mm of rain, about 21 days with 6+ hours of sunshine and 91% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
3.7/10
Ranked #7 of 12 months
- Avg temp
- 27°C
- Rainfall
- 214 mm
- Humidity
- 91%
- Days with 6h+ sun
- 21
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
September in Belmopan scores 3.7/10 for sightseeing and cultural travel - ranked #7 of 12. Expect around 27°C, 214 mm of rain, and roughly 21 days with 6+ hours of sunshine this month.
Belmopan is Belize’s inland capital-planned government core and a practical stop between coast and Cayo. Best window: the drier months outside peak monsoon.
September in Belmopan — the hardest end of the year
September averages 27°C (81°F) and humidity near 91%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
214 mm makes this the wettest stretch of the year, though about 21 days with 6+ hours of sunshine still appear — keep an indoor fallback ready.
It scores 3.7/10 here, 7th of 12 months, against 6.8/10 in the destination's best month.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
Figure on low-season pricing, with crowds are light for this destination.
Flexible dates? February scores 3.1 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Belmopan in September?
- In September, Belmopan averages 27°C, 214 mm of rain, and about 21 days with 6+ hours of sunshine. Its climate-comfort score is 3.7/10.
- Is September a good time to visit Belmopan?
- September earns a 3.7/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Belmopan in September?
- Expect about 214 mm of rain in September. Average humidity is 91% and there are about 21 days with 6+ hours of sunshine.
Curated in Belmopan
Tickets & experiences
Things to do in Belmopan
Belmopan, Belize. Live activities and tours from GetYourGuide, matched to this destination.