Weather in Belém

Heading to Belém or just want to stay updated on weather conditions? In this section, you will find up-to-date weather information, including detailed forecasts and useful charts to help you plan your day.

Belém, located in Brazil, features a typical equatorial climate. This means the weather here is hot and humid throughout the year. Temperatures are very stable, with averages fluctuating mainly between 26°C and 29°C. Daytime highs usually reach 28-32°C, while nighttime lows rarely drop below 24°C, ensuring consistently warm conditions for visitors.

In Belém's climate, two main seasons are clearly distinguishable, defined primarily by the frequency and amount of rainfall. The wet season usually lasts from January to May. During this period, especially in January, March, and April, it rains very often – the number of rainy days per month can reach 30-31, indicating a high probability of precipitation almost daily. A drier season sets in from June to November. The least amount of rainfall and rainy days (7-8 per month) is observed from August to October, making these the sunniest months. December is a transitional month when the number of rainy days and rainfall begins to rise again, heralding the start of a new wet season.

A hot and humid equatorial climate reigns in Belém year-round, with very insignificant fluctuations in average monthly temperatures. The annual temperature range here is quite narrow: average temperatures hold steadily between 26.3°C (in March) and 28.9°C (in October). September and October are considered the sweltering months, when the average temperature reaches 28.7-28.9°C. During this period, daytime highs regularly rise to 32.4-32.5°C, while nights remain very warm, with average minimums around 25.0-25.2°C. The "coolest" period, if one can use that term in tropical conditions, is the time from January to April. March stands out as the "mildest" month with an average temperature of 26.3°C, average nightly lows around 24.2°C, and daytime highs around 28.5°C.

In Belém, there is no customary division into "summer" and "winter"; eternal tropical summer prevails here. Daytime temperatures are consistently high throughout the year. Even in the "coolest" months (January to April), the air warms up during the day to an average of 28.5-29.2°C. In the hotter season, which lasts approximately from June to November, daytime highs often surpass the 30°C mark, peaking at 32.5°C in October. Nights in Belém also remain very warm and humid year-round, with minimum temperatures rarely falling below 24°C. The difference between day and night temperatures (diurnal range) is relatively small, varying on average from 4.3°C in March to 7.4°C in September. This means that even after a sweltering day, nights bring only slight relief, maintaining high temperatures and humidity.

The city of Belém experiences distinct seasonality in the distribution of precipitation throughout the year. A clear rainy season and a drier period can be distinguished here. The rainy season usually lasts from December to May, reaching its peak in precipitation frequency in March. At this time, although the total amount of rainfall in millimeters is not large, it rains very often, and the number of rainy days reaches a maximum.

The wettest month in Belém, in terms of total volume, is March, when about 18 mm of precipitation falls. Notably, in March, it rains almost daily, tallying an average of 31 rainy days. February and April are also characterized by high precipitation frequency: about 15 mm falls over 28-30 rainy days respectively. January and May close this wet period with 9-11 mm of rainfall and 29-30 days with rain. Such statistics indicate that precipitation in these months is frequent but predominantly light.

The dry season falls on the period from July to October. The least amount of rainfall occurs in August, September, and October — just about 1 mm in each of these months. September also stands out as the month with the fewest rainy days — only about 7. In July and November, rainfall is slightly higher (2-3 mm), and the number of rainy days is 14 and 12 respectively. June and December are transitional months, with 4-5 mm of precipitation and 21-24 rainy days, when rains are also predominantly light in nature.

Given Belém's climatic conditions, precipitation here falls predominantly in the form of rain. Snow is uncharacteristic for this region of Brazil. In the rainy season, one should expect frequent but mainly light rains or drizzle rather than heavy downpours. In the dry season, rains become rare and even more insignificant in volume.

When planning a trip to Belém, it is important to consider its equatorial climate, characterized by high temperatures and humidity year-round. The average annual temperature fluctuates between 26-29°C, so the foundation of your wardrobe should consist of light, breathable fabrics such as cotton and linen. Loose-fitting clothing will help you tolerate the heat more easily. Even in the "coolest" months, the temperature rarely drops below 24°C, so you will hardly need warm clothing, except perhaps for a light cardigan or stole for air-conditioned spaces.

Belém has a distinct rainy season, which usually lasts from January to May and resumes in December. During these months, especially from January to April, the number of rainy days is very high, so a compact umbrella and a light waterproof jacket or raincoat will become indispensable companions. Clothing made from quick-drying materials will also be very handy. From June to November, there is significantly less precipitation, especially in August-October, but a tropical shower can happen at any time, so keeping an umbrella or raincoat with you is still recommended.

Aside from clothing, pay attention to footwear: it should be maximally comfortable for walking around the city. In the rainy season, preference should be given to waterproof or quick-drying shoes. Don't forget about sun protection: high SPF sunscreen, headwear (a hat or cap), and sunglasses are mandatory throughout the year. Given the humid climate and proximity to the Amazon, insect repellent may also prove useful, especially when visiting parks or going on nature excursions.