Weather in Cruzeiro do Sul

Stay updated on weather changes when planning your trip to Cruzeiro do Sul. Below you will find current data, detailed charts, and the forecast for the near future.

The climate of the city of Cruzeiro do Sul can be described as hot and humid tropical. Here, an eternal summer reigns, and significant temperature fluctuations are absent: annual averages remain consistently high, rarely dropping below comfortable levels. Travellers should expect warm weather all year round, which is typical for this region of Brazil.

Two main seasons stand out during the year, distinguished not so much by temperature as by the amount of rainfall. The rainy season lasts quite a long time, covering the period from October to May, when precipitation can occur more than 20 days a month. During this time, humidity levels rise, and nature becomes lush with moisture.

A drier and sunnier period falls during the winter months of the Southern Hemisphere — from June to August. At this time, the number of rainy days is reduced to a minimum (about 9–10 days per month), and nights become slightly fresher, bringing a pleasant coolness. By September, daytime temperatures reach their peak values, warming up to 33°C, heralding the imminent return of the rainy season.

The climate in the city of Cruzeiro do Sul is notable for its enviable stability: an eternal summer prevails here with high temperatures year-round. The hottest period is September and October, when average figures reach 27–28°C, and the daytime heat often exceeds the 33°C mark. Even in the coolest months — June and July — the average temperature holds at 25.4–25.9°C, which can hardly be called a real winter in the traditional sense.

The summer season (December–March) is characterised by a steady temperature background: during the day, the air warms up to 30°C, and high humidity intensifies the sensation of heat. In the nominal "winter" period, especially in June and July, it becomes a little easier to breathe. Days remain hot (around 29–30°C), but the night-time coolness becomes more perceptible as the thermometer drops to 21.2°C, bringing long-awaited freshness.

Noticeable daily temperature fluctuations are observed throughout the year, which is typical for this region of Brazil. The difference between the daytime maximum and the night-time minimum averages 7–10 degrees. For example, in August and September, after the exhausting daytime heat (up to 32.5–33.0°C), comfortable evenings and nights arrive with temperatures around 22–23°C, creating ideal conditions for relaxation.

When planning a journey to Cruzeiro do Sul, it is worth noting that this region is characterised by a warm tropical climate with a clear division into wet and dry periods. Precipitation here falls exclusively as rain, and snow does not occur even in the coolest months, as the temperature rarely drops below comfortable values.

The rainy season is dominant and lasts from October to April. During this time, precipitation occurs very frequently, almost daily. The peak of humidity falls in March, when up to 28 rainy days are recorded in the month. Downpours can be intense but often give way to sunshine, maintaining high air humidity.

A drier season begins in June and lasts approximately until August-September. During this period, the amount of precipitation decreases noticeably. The most favourable month for those wishing to avoid frequent rains is July: on average, there are only about 9 days with precipitation at this time, making the middle of the year an excellent time for excursions and walks.

A trip to Cruzeiro do Sul requires a carefully selected wardrobe focused on a hot tropical climate. The basis of your luggage should be clothing made of light, natural fabrics, such as cotton and linen, which allow the skin to breathe. Since the average air temperature remains stable around +26...+28°C all year round, T-shirts, shorts, and loose summer trousers will be most appropriate. Be sure to bring comfortable open shoes, as well as a pair of closed trainers for long walks.

Given the high humidity and frequent rainfall, especially from January to April and October to December, a reliable umbrella or a compact raincoat will become your main allies. Even in the "drier" months, such as July and August, rain is not excluded, so waterproof accessories are relevant in any season. In September, when temperatures can rise to +33°C, sun protection is critical: do not forget a sun hat or cap, sunglasses, and high SPF cream.

Although nights here are warm and the temperature rarely drops below +21°C, it is recommended to pack one light long-sleeved top or shirt in your suitcase. This will be useful not so much for warmth, but for protection against insects in the evening or the chill of air conditioning in indoor spaces and transport. Due to the humidity, items may take longer than usual to dry, so it is worth taking several spare sets of undergarments and clothing.