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Unitedville Weather in September
Thinking of visiting Unitedville in September? Expect very high temperatures reaching 33°C (91°F) during the day, dropping to 23°C (73°F) at night, and note that quite a bit of rainfall is likely.
Rainfall in Unitedville in September
You can typically expect 15 days of rain this month, averaging around 168 mm (6.6 in). This month brings frequent, heavy showers. Both the number of wet days and the rainfall totals are on the high side.
Temperature in Unitedville in September
Daytime highs in Unitedville in September reach 33°C (91°F), with nights around 23°C (73°F). For most visitors, the main thing to prepare for is the heat during the day. Nights stay warm at around 23°C (73°F), so light bedding and good ventilation are worth thinking about.
Sunshine in Unitedville in September
The month brings about 175 hours of sunlight, offering a comfortable mix of sun and overcast.If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Unitedville. Our weather planner can help you explore destinations with more pleasant weather conditions.
Unitedville Temperature in September
Min Temperature
23°C (73°F)
Max Temperature
33°C (91°F)
Chance of Rain
51%
Precipitation
168 mm (6.6 in)
Rainy days
15 days
Sunshine
175 hours *
Percentage Sunshine
*
* Data from: Belmopan, Belize (18 KM, 11 Miles).
Unitedville Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Unitedville - and find the best time to visit.
Daily Historical Temperatures
41-year average (1976-2025)
Based on our historical records, temperatures in Unitedville typically stay consistent throughout September, with daily highs averaging around 33°C (91°F). Nights are warm, with lows around 24°C (75°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 Unitedville in September
Browse day-by-day weather records for Unitedville spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Unitedville historical weather extremes in September
Based on 22 years of weather observations in Unitedville between 2004 and 2026, these are the recorded extremes.
- On September 14, 2009, temperatures climbed to 38°C (100°F), marking the warmest September day on record.
- Unitedville experienced its chilliest September day on September 26, 2014, reaching only 25°C (77°F).
- Nighttime temperatures dropped to 21°C (70°F) on September 18, 2026, marking the coldest September night on record.
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 Unitedville in September
Get ready for hot weather in September! Lightweight, breathable fabrics are your best friend during this month. Cotton and linen shirts, shorts, sundresses, and sandals will keep you comfortable. Light colors help reflect the heat, avoid wearing black. Also bring a poncho, it will rain a lot! Waterproof everything you can. Bring sunglasses since you'll have some sunny periods throughout the month
What To Do in Unitedville 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
Unitedville 3-Day Forecast
More climate data for Unitedville
See the full Unitedville 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
Need travel inspiration? Check out our bucket list articles and be inspired.
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Cockscomb basin wildlife sanctuary
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River Tube in Belize
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