Climate averages 1991–2020
Belmopan weather
by month.
See how the year changes. April has the highest average daily maximum; March (tied with February) has the lowest average monthly rainfall.
Long-term climate patterns, not a forecast for a particular trip.
Across the year Belmopan averages a daytime high of 29.4°C and a nighttime low of 22.2°C, with about 1,208 mm of rain on roughly 212 days. April is the warmest month (average high 32.1°C) and January the coolest (26.3°C). October is the wettest month with 169 mm; March (tied with February) is the driest with 38 mm.
The annual picture
A year in Belmopan
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Belmopan climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 26.3°C19.6°C | 19.6°C | 68 | 14.6 | 11.211 h |
| February | 27.9°C20.3°C | 20.3°C | 38 | 10.7 | 11.612 h |
| March | 29.9°C21.2°C | 21.2°C | 38 | 9.5 | 12.012 h |
| April | 32.1°C22.9°C | 22.9°C | 39 | 8.4 | 12.513 h |
| May | 32.0°C23.8°C | 23.8°C | 95 | 16.1 | 12.913 h |
| June | 30.3°C24.0°C | 24.0°C | 162 | 24.8 | 13.113 h |
| July | 30.1°C23.6°C | 23.6°C | 126 | 24.0 | 13.113 h |
| August | 30.8°C23.7°C | 23.7°C | 126 | 23.7 | 12.713 h |
| September | 30.5°C23.5°C | 23.5°C | 150 | 24.9 | 12.212 h |
| October | 28.8°C22.5°C | 22.5°C | 169 | 22.1 | 11.812 h |
| November | 27.2°C20.8°C | 20.8°C | 121 | 17.1 | 11.311 h |
| December | 26.5°C20.0°C | 20.0°C | 76 | 16.3 | 11.111 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
Nearby cities
- ChetumalMexico · 149 kmHigh 29.6°C · Low 23.3°C · 1,224 mm rain a year
- Puerto BarriosGuatemala · 171 kmHigh 28.3°C · Low 22.9°C · 2,962 mm rain a year
- Puerto CortezHonduras · 182 kmHigh 28.2°C · Low 23.3°C · 2,377 mm rain a year
- CholomaHonduras · 202 kmHigh 29.3°C · Low 22.8°C · 1,924 mm rain a year
- San Pedro SulaHonduras · 210 kmHigh 29.1°C · Low 22.0°C · 1,924 mm rain a year
- PanzosGuatemala · 227 kmHigh 28.8°C · Low 21.7°C · 2,207 mm rain a year
- El ProgresoHonduras · 230 kmHigh 29.4°C · Low 21.9°C · 2,179 mm rain a year
- CobánGuatemala · 262 kmHigh 22.7°C · Low 15.7°C · 2,993 mm rain a year
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsWhat do the high and low temperatures mean?
We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.
How is a rain day counted?
A local calendar day (standard time, UTC-6, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.
Where do the numbers come from?
ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at 17.30°, -88.80° (6 km from the city centre), adjusted down by 0.1°C for the difference between the city's elevation (56 m) and the cell's (47 m). Rain comes from the 0.25° cell at 17.25°, -88.75°. These are model estimates, not weather-station readings; coast, hills and city streets can differ.
Does this page show sunshine, humidity or sea temperature?
No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.