Weather in Imperatriz

Planning a trip to the city of Imperatriz? Check out the latest weather information, including current data and forecasts, to be prepared for any conditions.

Imperatriz welcomes travellers with a hot tropical climate, typical for this part of Brazil. An almost eternal summer reigns here: air temperature remains high and stable throughout the year, averaging between +26°C and +30°C. Even on the "coolest" nights, the temperature rarely drops below +22°C, so you are unlikely to need warm clothes.

The year in the region is clearly divided into two distinct seasons: wet and dry. From December to April, the city is dominated by the rainy season, when downpours can occur almost daily — up to 27 days a month. This is a period of high humidity and lush blooming nature. The transitional months, May and November, are characterised by moderate rainfall.

From June to September, a distinctly dry season sets in, when rains cease almost completely — in August, for example, there may be no precipitation at all. This time is ideal for sun lovers, however, the rising heat should be taken into account: by September and October, daytime temperatures reach their peak values, often rising to +35°C.

The climate in Imperatriz is characterised by high temperatures throughout the year, which is typical for this region of Brazil. It hardly ever gets cold here, and the concept of "seasons" is defined more by the presence of rainfall than by a sharp drop in temperature. The hottest period falls at the end of the dry season — September and October. In these months, the average temperature stays at 29.7°C, and daytime highs regularly exceed the 35°C mark, creating intense tropical heat.

The period from June to August, which is formally considered winter in the Southern Hemisphere, feels like a very warm and dry summer in Imperatriz. During the day, the air heats up to 32–34°C, although humidity is minimal at this time. A characteristic feature of these months is noticeable diurnal temperature fluctuations: after a hot day, relatively fresh nights follow, when the thermometer can drop to a pleasant 22°C.

During the rainy season, which lasts from January to May, the temperature regime becomes more stable and "mild". Due to cloud cover, the daytime heat subsides slightly, staying in the 30–31°C range, while nights become warmer (around 23°C). The difference between day and night temperatures is less pronounced at this time than in the dry season, creating a sensation of constant warmth and high humidity.

The climate in Imperatriz is characterised by distinct seasonality of precipitation, which is typical for this region of Brazil. The year is clearly divided into wet and dry periods. The rainy season lasts roughly from December to April, reaching its peak in March, when up to 27 rainy days are recorded. At this time, travellers should be prepared for frequent rainfall, so having a reliable raincoat is essential.

The dry season arrives in the middle of the year and lasts from June to September. During these months, rain becomes an exceptional rarity: for instance, in August there may be no precipitation at all, and the number of wet days in July and September is minimal (about 0–1 days). This time is excellent for planning open-air excursions, as the sky remains clear and the risk of getting wet is practically absent.

Precipitation falls exclusively in the form of rain, often having the character of warm tropical downpours. Transitional months, such as May and November, demonstrate a shift in seasons: in May, rain intensity drops sharply (about 8 wet days), and by November it begins to increase again (up to 14 days with precipitation), preparing the city for the next wet cycle.

Since Imperatriz is distinguished by a hot climate all year round with average temperatures from 26°C to 30°C, the basis of your luggage should consist of light and breathable items. Give preference to clothes made of natural fabrics, such as cotton and linen, or modern moisture-wicking synthetics. Shorts, T-shirts, summer dresses, and comfortable sandals will be the ideal choice for walks. Considering that even at night the temperature rarely drops below 22°C, you are unlikely to need warm clothes, perhaps just a light cardigan for indoor spaces with powerful air conditioning.

When packing, it is important to consider the seasonality of rainfall. If your trip falls within the period from December to April, be prepared for frequent rains: a compact umbrella or a light raincoat is mandatory, and it is better to choose waterproof or quick-drying footwear. In the dry season (from June to September), when there is almost no rain and the sun is particularly active, UV protection is critically important: be sure to take a wide-brimmed hat, sunglasses, and high SPF cream.

Do not forget to pack swimwear to cool off on hot days. We also recommend bringing a high-quality insect repellent, which will come in handy during evening walks, and comfortable closed-toe shoes if you plan excursions beyond the city streets.