Climate and monthly weather forecastBelmopan, Belize
Climate and monthly weather forecast
The climate of Belmopan
Belmopan, capital of Belize, falls within the Am or Tropical Monsoon category of the Köppen climate classification, establishing the city's all-year-round warm and humid weather condition. The city's geographical position in the subtropical region near the equator contributes to these prevailing weather conditions. Average monthly temperatures fluctuate moderately with a range from 17.8°C (64°F) in the cooler months to as high as 32.6°C (90.7°F) in warmer months.An interesting feature of Belmopan's climate is rainfall, which shows distinctive seasonal patterns. Total monthly rainfall varies significantly from 26mm (1.02") in the relative dry periods to a considerably hefty 127mm (5") in the wetter months. These fluctuations also bring variable rainy days, with the highest number reaching 27.3 days, whilst the driest month records just 15.5 rainy days.
Belmopan's relative humidity mirrors the tropical climate's character; it remains high throughout the year, varying from 77% to 88%. Solar radiation duration, expressed as sunshine hours, also sees slight monthly variations from 5.3 hours to almost doubling that at 9.7 hours.
The Best Time to Visit Belmopan
Visitors with preferences for milder temps and drier experiences should consider visiting Belmopan from February to April. During these months the city experiences lesser rain, averaging between 26mm (1.02") and 32mm (1.26"). Relative humidity tends to be lower on the scale as well, reaching a yearly low point of 77% in April. Highlights during these sunny months include an average of 9.7 hours of sunshine in a day in April and outdoor friendly temperatures, with daily maximums generally staying under 30°C (86°F). This period also witnesses less cloud cover, enhancing visibility over the city's landscapes.The Worst Time to Visit Belmopan
Trip planners aiming to avoid excessive rainfall should avoid the months from June to September. This period represents the peak rainy season in Belmopan, with persistent rainfall patterns reflecting the highest monthly average of 127mm (5") in June. Also, the number of rainy days shoots up to an average of 27.3 days in September. Coinciding with this, the relative humidity stays quite sticky at around 84% to 85%. Lighter winds during these periods might also reduce comfort levels for visitors used to breezier climates.Spring Weather in Belmopan
From March to May, Belmopan transitions into mild tropical heat. Maximum temperatures climb to 32.6°C (90.7°F) and nights remain pleasantly warm, bottoming out at around 21.3°C (70.3°F). Spring in the city witnesses moderate rainfall, with the monthly average ascending from 26mm (1.02") to 80mm (3.15"). Longer daylight hours, peeking at 13 hours, accompanied by slightly higher sunshine durations and lesser clouds, make this a bright season. However, visitors should be prepared for an uptick in humidity levels, settling at around 79%.Summer Weather in Belmopan
Summer in Belmopan, defined from June to August, is characterized by a mixture of tropical warmth and significant rainfall. This season sees the temperatures remaining high with average highs swinging between 31.1°C (88°F) and 31.8°C (89.2°F), while lows generally hover above 22°C (71.6°F). Changes in rainfall during these months are pronounced, shooting up to 127mm (5") in June before gradually tapering off to 92mm (3.62"). Meanwhile, daylight hours extend to 13.2 hours, creating plenty of opportunities for outside activities despite the higher rain frequency.Autumn Weather in Belmopan
Autumn months, September through November, see temperatures gradually falling from 31.4°C (88.5°F) in September to 27.9°C (82.2°F) in November. Evenings too get cooler with low temperatures declining from 22.2°C (72°F) and down to 19.1°C (66.4°F). Despite a reduction in daylight hours to about 11.3 hours, sunshine hours witness a slow decline, resulting in still considerable sunny spells. Rainfall remains high in this season, particularly in September and October with over 100mm (3.94") precipitation measures.Winter Weather in Belmopan
During the winter months of December through February, Belmopan experiences soothing temperatures and a relative respite from pervasive rainfall. The daytime temperatures drift down to pleasant levels, with averages ranging between 26.4°C (79.5°F) and 28.2°C (82.8°F), while nights get cooler with lowest temperatures falling around 18.4°C (65.1°F). The rainfall averages a manageable 43mm (1.69") in December, offering residents and visitors alike drier days to engage in outdoor activities.Weather in January
As the year begins, humidity levels are noticed to be relatively high in Belmopan, Belize. This first month of the year experiences an elevation in the outstanding average temperature, compared to the cooler conditions from December, granting residents a warmer start to the year. Weather in January »Weather in February
February brings along slightly warmer weather conditions in Belmopan, Belize. Compared to January, the city sees a mild lift in overall average temperatures. The noticeably unique factor during this second month of the year is the spike in both maximum temperature and minimum temperature, the latter rising to 18.6°C (65.5°F). Weather in February »Weather in March
March demonstrates a transition from the winter-like climate towards the hotter seasons in Belmopan, Belize. The subtle progress of temperature from February carries over to this month. Furthermore, this leads to a concurrent decrease in relative humidity levels from the prior months. Weather in March »Weather in April
April announces the arrival of warmer weather in Belmopan, Belize. This month sees temperatures continuing its gradual incline from March. Notably, it features one of the warmest average highs for the year, scaling up to an astonishing 32.6°C (90.7°F). Weather in April »Weather in May
The climate in May reflects peak summer characteristics in Belmopan, Belize. Climbing from April, temperature averages stay consistent, while the city experiences the longest daylight hours so far. May is also distinctive for having the highest rainfall volume of the year, reaching a significant total of 80mm (3.15"). Weather in May »Weather in June
Varying weather conditions mark June in Belmopan, Belize. Compared to May, the temperature averages a minor dip, implying a hint of respite from the summer high. This month is noteworthy for its culmination of the highest number of rainfall days, amounting to 26.3 days. Weather in June »Weather in July
July in Belmopan, Belize, offers weather conditions that blend elements of both summer and monsoon. The city sees a trivial increase in the average weather conditions from June. Furthermore, July witnesses a minor drop in the maximum temperature count to 31°C (87.8°F). Weather in July »Weather in August
August continues the monsoon trend in Belmopan, Belize, although with a slightly warmer temperature profile than July. The month experiences a trivial elevation in the average low temperature, making the nights slightly warmer. The monsoon rains reach their peak volume, with an impressive accumulation of 92mm (3.62"). Weather in August »Weather in September
September ushers in the last phase of significant monsoon conditions in Belmopan, Belize. The temperature structure experiences a minor decline from August, indicating the impending arrival of cooler days. An intriguing attribute of September is the highest number of cloud cover percentages, hitting 55%. Weather in September »Weather in October
October begins to see a shift in the weather pattern towards slightly cooler days in Belmopan, Belize. The retreating monsoons transition into lesser rainfall from September, allowing more sunshine hours in the day. October stands out for having one of the lower temperature highs of the latter part of the year, seeing an average of 29.7°C (85.5°F). Weather in October »Weather in November
November brings about cooler weather conditions and less frequent rain in Belmopan, Belize. The downward trend in temperatures from October is evident and continues into this month. The last month of the autumn season, November, sees one of the lowest temperatures for the latter part of the year at 19.1°C (66.4°F). Weather in November »Weather in December
December marks the onset of winter in Belmopan, Belize, bringing in a gentle drop in temperatures from November. It makes for one of the coldest months of the year, albeit fairly mild compared to harsh winters elsewhere. December sees a slightly lower minimum temperature drop to 18.4°C (65.1°F). Weather in December »Updated: Jan 30, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Belmopan's coldest month, January, registers temperatures that range from a high of 26.4°C (79.5°F) to a low of 17.8°C (64°F).
In Belmopan, during the entire year, the rain falls for 254.6 days and collects up to 808mm (31.81") of precipitation.
January has the least sunshine of the year in Belmopan, Belize, with an average of 5.3h of sunshine.
The month with the lowest UV index in Belmopan, Belize, is January, with an average maximum UV index of 5.
The month with the least rainfall in Belmopan, Belize, is March, when the rain falls for 15.8 days and typically collects 26mm (1.02") of precipitation.
April is the warmest month in Belmopan, with the temperature often reaching an average high of 32.6°C (90.7°F) and an average low of 21.3°C (70.3°F).
April is the least humid month in Belmopan, with an average relative humidity of 77%.
With an average of 9.7h of sunshine, April has the most sunshine of the year in Belmopan.
The months with the highest UV index are April, June and July, with an average maximum UV index of 7.
June is the month with the most rainfall. Rain falls for 26.3 days and accumulates 127mm (5") of precipitation.
June has the longest days of the year, with an average of 13h and 6min of daylight.
With an average relative humidity of 88%, December is the most humid month in Belmopan.
The month with the shortest days is December, with an average of 11h and 6min of daylight.
Belmopan does not observe Daylight Saving Time (DST). CST timezone is used throughout the entire year.
Average temperature
Belmopan, Belize
The warmest month (with the highest average high temperature) is April (32.6°C).
The month with the lowest average high temperature is January (26.4°C).
The month with the highest average low temperature is June (22.8°C).
The coldest month (with the lowest average low temperature) is January (17.8°C).
Average pressure
Belmopan, Belize
- Average pressure in January:
1016.6mbar - Average pressure in February:
1015.3mbar - Average pressure in March:
1014.7mbar - Average pressure in April:
1012.1mbar - Average pressure in May:
1011.4mbar - Average pressure in June:
1011.4mbar
- Average pressure in July:
1013.4mbar - Average pressure in August:
1012.1mbar - Average pressure in September:
1011mbar - Average pressure in October:
1011.6mbar - Average pressure in November:
1014.5mbar - Average pressure in December:
1015.5mbar
The month with the highest atmospheric pressure is January (1016.6mbar).
The month with the lowest atmospheric pressure is September (1011mbar).
Average wind speed
Belmopan, Belize
- Average wind speed in January:
5.1km/h - Average wind speed in February:
5.7km/h - Average wind speed in March:
6.1km/h - Average wind speed in April:
6.5km/h - Average wind speed in May:
6.3km/h - Average wind speed in June:
6.2km/h
- Average wind speed in July:
6.4km/h - Average wind speed in August:
5.8km/h - Average wind speed in September:
4.9km/h - Average wind speed in October:
4.7km/h - Average wind speed in November:
4.6km/h - Average wind speed in December:
4.8km/h
The windiest month (with the highest average wind speed) is April (6.5km/h).
The calmest month (with the lowest average wind speed) is November (4.6km/h).
Average humidity
Belmopan, Belize
The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is April (77%).
Average rainfall
Belmopan, Belize
The wettest month (with the highest rainfall) is June (127mm).
The driest month (with the least rainfall) is March (26mm).
Average rainfall days
Belmopan, Belize
- Average rainfall days in January:
18.2 days - Average rainfall days in February:
16 days - Average rainfall days in March:
15.8 days - Average rainfall days in April:
15.5 days - Average rainfall days in May:
20.4 days - Average rainfall days in June:
26.3 days
- Average rainfall days in July:
25.7 days - Average rainfall days in August:
25.7 days - Average rainfall days in September:
27.3 days - Average rainfall days in October:
25 days - Average rainfall days in November:
19.5 days - Average rainfall days in December:
19.2 days
The month with the highest number of rainy days is September (27.3 days).
The month with the least rainy days is April (15.5 days).
Average daylight / Average sunshine
Belmopan, Belize
- Average daylight in January:
11h and 12min - Average daylight in February:
11h and 36min - Average daylight in March:
12h and 6min - Average daylight in April:
12h and 30min - Average daylight in May:
12h and 54min - Average daylight in June:
13h and 6min
- Average daylight in July:
13h and 0min - Average daylight in August:
12h and 42min - Average daylight in September:
12h and 12min - Average daylight in October:
11h and 42min - Average daylight in November:
11h and 18min - Average daylight in December:
11h and 6min
The month with the longest days is June (Average daylight: 13h and 6min).
The month with the shortest days is December (Average daylight: 11h and 6min).
- Average sunshine in January:
5h and 18min - Average sunshine in February:
6h and 0min - Average sunshine in March:
8h and 18min - Average sunshine in April:
9h and 42min - Average sunshine in May:
9h and 24min - Average sunshine in June:
8h and 18min
- Average sunshine in July:
8h and 36min - Average sunshine in August:
9h and 12min - Average sunshine in September:
7h and 24min - Average sunshine in October:
6h and 12min - Average sunshine in November:
5h and 30min - Average sunshine in December:
5h and 42min
The month with the most sunshine is April (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days
Belmopan, Belize
- Average sunshine days in January:
9.4 days - Average sunshine days in February:
7.3 days - Average sunshine days in March:
9.6 days - Average sunshine days in April:
9.9 days - Average sunshine days in May:
7 days - Average sunshine days in June:
2.5 days
- Average sunshine days in July:
3.1 days - Average sunshine days in August:
3.3 days - Average sunshine days in September:
1.3 days - Average sunshine days in October:
4.4 days - Average sunshine days in November:
7.4 days - Average sunshine days in December:
8.4 days
The month with the most sunshine days is April (9.9 days).
The month with the least sunshine days is September (1.3 days).
Average UV index
Belmopan, Belize
The months with the highest UV index are April, June and July (UV index 7).
The month with the lowest UV index is January (UV index 5).
Average cloud cover
Belmopan, Belize
The month with the most cloud cover is November (Cloud cover 63).
The month with the least cloud cover is April (Cloud cover 45).
Average visibility
Belmopan, Belize
The months with the highest visibility are March, April, May and June (7km).
The months with the lowest visibility are January, February, July, August, September, October, November and December (6km).
