Weather in Barreiras

Planning your day in the city of Barreiras? Check out the current meteorological reports and forecasts to ensure your journey is as comfortable as possible.

Barreiras is characterised by a hot tropical climate with a distinct division between dry and wet seasons. High temperatures persist throughout the year, making the city an attractive destination for lovers of heat and sunshine. Even during the coolest months, the weather remains comfortable, creating an atmosphere of eternal summer typical of this region of Brazil.

The year here can be roughly divided into two periods. From May to September, there is a pronounced dry season: during this time, rain almost completely ceases (especially in June, July, and August, when the number of rainy days approaches zero), and the sky remains clear. This time is considered one of the most stable for planning trips. From November to April comes the rainy season, when the amount of precipitation and humid days increases significantly, revitalising the local nature.

An interesting feature of the weather in Barreiras is the temperature peak, which falls not in the middle of the year, but during the transitional period — September and October. In these months, the air can warm up to 34–35°C. At the same time, in July, nights become pleasantly fresh with temperatures around 17–18°C, allowing for a comfortable rest from the daytime heat.

The climate in Barreiras is distinguished by stable warmth throughout the year, making this city an appealing destination for fans of sunny weather. The hottest period here is not the height of the calendar summer, but the spring months — especially October, when the average daytime temperature reaches its peak at 34.6°C. The coolest month is considered to be July; however, even at this time, average indicators hover around a comfortable 23.7°C, which is unlikely to force tourists to reach for warm clothes.

The summer season, which in Brazil falls between December and February, is characterised by consistently high temperatures. During the day, the air warms up to 30°C, while nights remain warm (around 21°C), which, combined with high humidity, creates a sensation of tropical heat. Winter (June-August), on the other hand, brings drier and milder weather. Daytime temperatures remain high and can reach 30-31°C, but the humidity drops significantly, making the heat more bearable.

Travellers should take into account noticeable temperature fluctuations between day and night, which are particularly evident during the dry season and early spring. For example, in September, the difference can be quite significant: after a daytime high of 33.9°C, the temperature at night drops to 20.6°C. In July, nights become the freshest of the year, with a minimum of around 17.5°C, offering pleasant coolness after a sunny day.

Barreiras has a clearly defined seasonality regarding precipitation, dividing the year into two distinct periods: wet and dry. The rainy season usually lasts from November to March. During this time, rainfall is regular: January, February, and March are the wettest months, recording an average of about 16 rainy days each month. Travellers planning a trip during this period should definitely bring an umbrella or raincoat, as tropical downpours can be frequent.

The dry season arrives in May and continues until September, reaching its peak in the winter months (for the Southern Hemisphere). June, July, and August are the driest time of the year, when the probability of precipitation is practically nil, and the number of rainy days, according to statistics, is 0. This is the ideal period for those who prefer clear skies and wish to avoid rain during excursions.

Transitional months, such as April and October, demonstrate a shift in weather patterns. In April, the intensity of precipitation begins to decrease (about 11 rainy days), while in October, conversely, nature prepares for the new wet season (about 5 days with precipitation). Given the region's hot climate, all precipitation falls exclusively as rain; snow never occurs here.

Given the warm climate of Barreiras, the foundation of your luggage should be light summer clothing made from natural, breathable fabrics such as cotton or linen. Since daytime temperatures here often exceed +30°C, especially in September and October, you will need shorts, t-shirts, and light dresses. Do not forget reliable sun protection: a wide-brimmed hat, sunglasses, and high SPF cream are mandatory at any time of year. For long walks, comfortable open shoes or light trainers are best.

When packing, it is important to consider the seasonality of rainfall. If you plan to travel between November and March, when there can be up to 16 rainy days a month, be sure to pack a compact umbrella or a light raincoat. Quick-drying shoes will also be useful during this time. In the dry season, which lasts from May to September, rain is unlikely, however, in June and July, night temperatures can drop to +17°C. For evening walks during these months, it is recommended to bring a light sweater, windbreaker, or cardigan to feel comfortable during temperature changes.