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Belmopan Weather in September
September in Belmopan typically sees daytime highs of 33°C (91°F) and nighttime lows of 24°C (75°F). Rainfall is also possible this month, so it's worth packing an umbrella.
Rainfall in Belmopan in September
You can typically expect 16 days of rain this month, averaging around 166 mm (6.5 in). This month brings frequent, heavy showers. Both the number of wet days and the rainfall totals are on the high side.
Temperature in Belmopan in September
September in Belmopan brings typical temperatures with highs around 33°C (91°F) and lows of 24°C (75°F). The hottest part of the day is usually in the afternoon, so lighter clothing can help you stay comfortable. With lows around 24°C (75°F), the nights are warm enough that a sheet is usually all you need for bedding.
Sunshine in Belmopan in September
You can expect a moderate amount of sunlight, with approximately 175 hours. This means a pleasant mix of sun and overcast.Our weather planner can help you find worldwide destinations with pleasant weather during this period. January and December typically offer the best weather for Belmopan.
Belmopan Temperature in September
Min Temperature
24°C (75°F)
Max Temperature
33°C (91°F)
Chance of Rain
53%
Precipitation
166 mm (6.5 in)
Rainy days
16 days
Sunshine
175 hours
Percentage Sunshine
Belmopan Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Belmopan - and find the best time to visit.
Daily Historical Temperatures
41-year average (1976-2025)
Based on our historical records, temperatures in Belmopan typically stay consistent throughout September, with daily highs averaging around 33°C (91°F). Nights are warm, with lows around 25°C (77°F).
Average temperatures in September
Daily Historical Precipitation
41-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for Belmopan in September
Browse day-by-day weather records for Belmopan spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Belmopan historical weather extremes in September
According to our 22 years of weather records for Belmopan, the following extremes were recorded between 2004 and 2026.
- On September 14, 2009, temperatures climbed to 37°C (99°F), marking the warmest September day on record.
- The coldest September day was on September 26, 2014, with a maximum of 26°C (79°F).
- Belmopan registered its coldest September night on September 9, 2016, with temperatures dropping to 21°C (70°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 →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Belmopan in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Sunglasses could come in handy during the sunnier parts of your trip.
What To Do in Belmopan in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming7/10 -
Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
Belmopan 3-Day Forecast
More climate data for Belmopan
See the full Belmopan climate overview or explore weather in Belize.
Popular in September
Where to go in September - average daytime high across popular destinations.
San Ignacio
33°C (91°F) Dangriga31°C (88°F) Belize City31°C (88°F) Hopkins31°C (88°F) Maya Beach31°C (88°F) Caye Caulker30°C (86°F) Placencia Village31°C (88°F) San Pedro30°C (86°F) Bucket list
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