Monthly climate averages for Belmopan. Based on 10-year ERA5 reanalysis data.
Am Tropical Monsoon
Climate OverviewBelize in September has hot conditions, with highs reaching 32.7°C (91°F) and afternoons the warmest part of the day. Rain falls on about 24 days this month, totalling around 152 mm.
This month falls at the beginning of Autumn. The combination of heat and frequent rain creates tropical monsoon conditions.
With midday temperatures reaching 33°C (91°F), schedule outdoor activities for early morning or late afternoon. Evenings remain warm enough for comfortable outdoor dining and night markets. Keep afternoons flexible as tropical showers are common — they typically clear within an hour.
Rain most often builds later in the day, so mornings are typically the driest window and afternoon showers are more likely.
Weather conditions this month are less ideal compared to other times of the year. Indoor activities or shorter outings may be more comfortable.
Light, breathable fabrics like cotton and linen are essential. Opt for loose-fitting clothing in light colors to stay cool. A waterproof jacket and shoes are non-negotiable — showers are frequent.
| Month | Temp | Feels Like | Rain | Sun | Humidity | Status | Details |
|---|---|---|---|---|---|---|---|
| January best | 29°C / 21°C | 33°C / 24°C | 16days (77 mm) Wet | 9.1h Good | 87% Very Muggy | Good | View Details |
| February best | 30°C / 21°C | 34°C / 24°C | 12days (49 mm) Wet | 10.1h Excellent | 82% Humid | Good | View Details |
| March best | 32°C / 23°C | 36°C / 26°C | 10days (45 mm) Wet | 11.2h Excellent | 79% Humid | Fair | View Details |
| April | 33°C / 24°C | 38°C / 28°C | 9days (38 mm) Wet | 11.6h Excellent | 76% Humid | Poor | View Details |
| May | 34°C / 25°C | 40°C / 30°C | 12days (66 mm) Wet | 11.3h Excellent | 77% Humid | Poor | View Details |
| June | 33°C / 25°C | 39°C / 30°C | 24days (167 mm) Wet | 9.6h Good | 82% Humid | Wet | View Details |
| July | 32°C / 25°C | 38°C / 30°C | 25days (129 mm) Wet | 10.6h Excellent | 83% Humid | Wet | View Details |
| August | 33°C / 24°C | 39°C / 30°C | 25days (139 mm) Wet | 10.5h Excellent | 83% Humid | Wet | View Details |
| September | 33°C / 24°C | 39°C / 30°C | 24days (152 mm) Wet | 10.3h Excellent | 84% Humid | Wet | View Details |
| October | 32°C / 24°C | 38°C / 28°C | 19days (137 mm) Wet | 9.6h Good | 83% Humid | Wet | View Details |
| November | 29°C / 22°C | 34°C / 26°C | 19days (222 mm) Wet | 8.5h Good | 87% Very Muggy | Wet | View Details |
| December best | 28°C / 21°C | 33°C / 24°C | 19days (96 mm) Wet | 8.8h Good | 88% Very Muggy | Wet | View Details |
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