Belmopan climate
Belmopan (Belize) has a tropical savanna (dry summer) climate (Köppen As). The average temperature over the year is 26 °C78 °F, and about 1,644 mm65 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Belmopan climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2780 | 1966 | 2373 | 1014.0 |
| Feb | 2984 | 2068 | 2476 | 552.2 |
| Mar | 3289 | 2169 | 2679 | 451.8 |
| Apr | 3493 | 2272 | 2883 | 341.3 |
| May | 3392 | 2474 | 2883 | 1184.7 |
| Jun | 3086 | 2475 | 2781 | 2309.1 |
| Jul | 3085 | 2475 | 2780 | 1495.9 |
| Aug | 3086 | 2475 | 2781 | 1746.9 |
| Sep | 3085 | 2475 | 2780 | 1987.8 |
| Oct | 2883 | 2373 | 2578 | 2439.6 |
| Nov | 2781 | 2069 | 2475 | 1706.7 |
| Dec | 2780 | 2067 | 2374 | 1265.0 |
| Year | 3493 | 1966 | 2678 | 1,64465 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 84% | 56% | 3.9 | 11:12 |
| Feb | 78% | 46% | 4.8 | 11:34 |
| Mar | 70% | 39% | 5.7 | 11:00 |
| Apr | 67% | 40% | 6.2 | 12:31 |
| May | 71% | 57% | 5.7 | 12:56 |
| Jun | 85% | 69% | 5.2 | 13:09 |
| Jul | 86% | 62% | 5.4 | 13:04 |
| Aug | 85% | 60% | 5.6 | 12:42 |
| Sep | 89% | 65% | 5.2 | 12:12 |
| Oct | 91% | 63% | 4.5 | 11:43 |
| Nov | 89% | 54% | 4.1 | 11:18 |
| Dec | 87% | 54% | 3.8 | 11:06 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Belmopan is like
The warmest month is May, with an average high of 33 °C92 °F and a low of 24 °C74 °F. The coldest is January, when highs average 27 °C80 °F and lows 19 °C66 °F. Seasonal differences are small — just 5.6 °C10.1 °F between the warmest and the coolest month.
It is wet, with about 1,644 mm65 in of precipitation per year. The wettest three-month stretch is August–October, which brings 37% of the annual total. The wettest month is October (243 mm9.6 in), the driest is April (34 mm1.3 in).
Relative humidity ranges from 67% in April to 91% in October. The clearest skies (lowest average cloud amount, 39%) are typical of March. Average wind speed near the ground ranges from 0 km/h (0 mph) in June to 1 km/h (0 mph) in January. Daylight lasts from about 11.1 hours in December to 13.2 hours in June.
Best time to visit Belmopan
Based on these averages, the most comfortable months for sightseeing and outdoor activities are February: average highs of 29 °C84 °F to 29 °C84 °F with 55 mm2.2 in to 55 mm2.2 in of precipitation per month.
The most challenging month is October, which is very wet (243 mm9.6 in) and humid (91% relative humidity).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Belmopan
- Wetter months (June–November) — highs 2781 to 30 °C86 °F, lows 2069 to 24 °C75 °F, about 194 mm7.6 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
- Drier months (December–May) — highs 2780 to 34 °C93 °F, lows 1966 to 24 °C74 °F, about 80 mm3.1 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
How Belmopan compares
Compared with Chetumal, about 149 km to the north, Belmopan is on average 1 °C1.8 °F cooler and receives 18% more precipitation (1,644 mm65 in vs 1,392 mm55 in). The difference is largest in November (1.6 °C3 °F cooler).
Places in other countries with the most similar temperature and rainfall pattern: San Pedro Sula (Honduras, Am), Puerto Barrios (Guatemala, Am) and Choloma (Honduras, Am).
Nearby places
- Chetumal 149 km · 27 °C80 °F · 1,392 mm55 in
- Puerto Barrios 171 km · 26 °C80 °F · 1,739 mm68 in
- Puerto Cortez 182 km · 27 °C80 °F · 1,783 mm70 in
- Choloma 202 km · 26 °C80 °F · 1,547 mm61 in
- San Pedro Sula 210 km · 26 °C79 °F · 1,547 mm61 in
- El Progreso 230 km · 27 °C80 °F · 1,624 mm64 in
- Cobán 262 km · 19 °C67 °F · 1,469 mm58 in
- La Ceiba 269 km · 27 °C81 °F · 2,069 mm81 in
Frequently asked questions
What is the warmest month in Belmopan?
May is the warmest month in Belmopan, with an average high of 33 °C (92 °F) and an average low of 24 °C (74 °F).
What is the coldest month in Belmopan?
January is the coldest month, with an average high of 27 °C (80 °F) and an average low of 19 °C (66 °F).
When does it rain the most in Belmopan?
October is the wettest month with about 243 mm (9.6 in) of precipitation; April is the driest with about 34 mm (1.3 in).
What is the best time to visit Belmopan?
Judging by long-term averages, the most comfortable months are February.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.