Climate and monthly weather forecastTeresina, Brazil

The climate of Teresina

Teresina, situated in Brazil, is classified as having an Aw, or Tropical wet and dry climate according to the Köppen climate classification. This predominate climate indicates a weather pattern where a dry winter accompanies a very wet summer. Throughout the year, Teresina experiences temperatures that fluctuate slightly from 31.3°C (88.3°F) to 36.7°C (98.1°F) at the pinnacle of the day, while during the twilight hours, these temperatures tend to fall between 22°C (71.6°F) to 23.9°C (75°F).

Rainfall varies drastically throughout the year in Teresina. Months from May to August register the least rain with figures ranging from 8mm (0.31") to 26mm (1.02"). However, the scenario changes dramatically in the first quarter with a steep increase in rainfall from 224mm (8.82") to 285mm (11.22") between January to March. The city therefore remains relatively dry from May to August with an average rainfall of around 10mm (0.39") and becomes significantly water-soaked at the start of the year.

The daylight duration in Teresina remains considerably constant, with an annual range from 11.8 hours to 12.4 hours. The insignificant variation in sunlight hours, along with the consistent UV index of 7 throughout the year, suggests prolonged sun exposure almost all year round. The cloud cover ranges from 22% to 56%, with less dense cloud cover during July to September and denser coverage from January to April.

The best time to visit Teresina

Tourists can enjoy the pleasant weather and explore the city from May to August. These months witness low rainfall from 10mm (0.39") to 26mm (1.02") coupled with refreshing wind speed ranging from 10.1km/h (6.3mph) to10.3km/h (6.4mph). The temperature during these months ranges from 31.3°C (88.3°F) to 32.8°C (91°F), making the days warm for indulging in sightseeing. Though the nights may feel slightly muggy with temperatures falling between 22°C (71.6°F) to 23.1°C (73.6°F), the evenings are quite enjoyable, thanks to the gentle breeze.

The worst time to visit Teresina

The period from January to March can be quite challenging for travelers with a marked increase in rainfall levels from 224mm (8.82") to 285mm (11.22") and high humidity levels ranging from 78% to 83%. The temperatures during the daytime soar up to 31.5°C (88.7°F) to 31.7°C (89.1°F), making it uncomfortably humid and warm, and thus not suitable for outdoor activities.

Spring weather in Teresina

While Teresina's tropical climate does not mirror the conventional spring as found in temperate regions, the months from September to November can be considered moderately spring-like. Daytime temperatures range from 35.2°C (95.4°F) to 36.7°C (98.1°F) during this period, while night temperatures drop slightly, staggering between 23.1°C (73.6°F) to 23.9°C (75°F). Rainfall increases from 8mm (0.31") in September to 62mm (2.44") in November signaling the onset of the wet season.

Summer weather in Teresina

Teresina does not experience a traditional summer season due to its proximity to the equator, but for the purpose of classification, the months from December to February can be considered summer months. The temperatures during these months range from 33.5°C (92.3°F) to 36.7°C (98.1°F) during the day and between 22.8°C (73°F) to 23.9°C (75°F) at night. Rainfall rises drastically from 62mm (2.44") in December to 254mm (10") in February, turning the landscape lush and green.

Autumn weather in Teresina

In a tropical climate like that of Teresina, autumn isn't observed in the traditional sense. For examination purposes, though, the months between March and May can be regarded as an autumnal period. The temperature fluctuates between 31.3°C (88.3°F) to 31.5°C (88.7°F) throughout the day and between 22.7°C (72.9°F) to 22.9°C (73.2°F) during the night. Rainfall starts to decline from 285mm (11.22") in March to 87mm (3.43") in May, signaling the end of the wet season.

Winter weather in Teresina

June to August are the driest months in Teresina with recorded rainfall as low as 10mm (0.39"), and can be compared to a winter season. Despite being the driest, these months are warm, with temperature ranges between 31.8°C (89.2°F) to 35.1°C (95.2°F) throughout the day and dropping to between 22°C (71.6°F) to 22.2°C (72°F) during the night. Amid this period, the wind speed also increases, making the weather relatively comfortable despite the high temperatures.

Weather in January

As the year begins in Teresina, Brazil, January is characterized by warm temperatures, continuous light showers, and slightly reduced sunshine hours. There is a significant amount of rainfall, with January experiencing a generous 235mm (9.25") spread across an average of 28.3 days. Weather in January »

Weather in February

The weather in Teresina in February slightly escalates the warm and damp climate observed in January. Rainfall and temperatures record slightly higher, while the sunshine hours decrease a bit compared to the preceding month. February stands out due to its increased precipitation volumes that reach 254mm (10"), making it a relatively wet month. Weather in February »

Weather in March

There is a transition in Teresina's climate from February to March. While the latter witnesses the highest volumes of rainfall in the year, at 285mm (11.22"), temperatures and humidity stabilize similar to February. Sunshine hours take a slight dip, thus creating a slightly more subdued ambiance compared to the earlier months. Weather in March »

Weather in April

In April, Teresina witnesses a significant reduction in rainfall, turning the city into a slightly drier place compared to the preceding months. Temperatures remain warm but steady, while a moderate decrease in daylight hours sets in. Weather in April »

Weather in May

The month of May sees a considerable shift in Teresina's weather, as the city transitions to a remarkably drier and less cloudy period. Rainfall drops off sharply in comparison to April, highlighting the onset of the dry season. The clear sky results in increased sunshine hours, despite a marginal decrease in overall daylight hours. Weather in May »

Weather in June

June brings about further changes to Teresina's climate. The weather continues growing drier, while the temperature plateaus, maintaining comfortable warmth throughout the month. The cloud cover reduces substantially, thus facilitating increasing sunshine hours and overall visibility. Weather in June »

Weather in July

July marks the middle of the dry season in Teresina. The city enjoys relatively stable temperatures, reduced rainfall, and increased sunshine hours. The already minimal rainfall amount recorded in June drops further in July, reaching just 10mm (0.39"). Weather in July »

Weather in August

August in Teresina carries forward the dry and sunny conditions observed in July. This month sees a slight increase in the day temperatures marking a hint of the approaching wet season. Teresina maintains the reduced 10mm (0.39") August rainfall observed in July, hence cementing the dry season. Weather in August »

Weather in September

As Teresina moves into September, it prepares to shift back to a wetter climate. However, the rainfall volume remains low, while temperatures start to creep upward, indicating the incoming transition to the wet season. The September precipitation falls to a low 8mm (0.31"), creating the driest conditions in the yearly cycle. Weather in September »

Weather in October

October marks the end of the dry season and the beginning of increased precipitation in Teresina. Rainfall starts to climb, yet temperatures remain high, almost at the year's peak. The city notes a noticeable jump in precipitation levels to 32mm (1.26"), signaling the onset of the rainy spell. Weather in October »

Weather in November

The month of November marks a prominent transition phase for Teresina's climate. Rainfall scales up considerably while the temperatures maintain their high levels from the preceding month. November in Teresina brings along an added jump in rainfall values to 62mm (2.44"), showing a marked return of the wet season. Weather in November »

Weather in December

Closing out the year, December in Teresina carries forward the re-established wet climate from November. The month witnesses an upward surge in rainfall, while the temperature begins to dip slightly compared to the previous months. Weather in December »