Goiás Climate

Last updated: January 18, 2025

Goiás, Brazil, exhibits a Köppen-Geiger climate classification of Aw, characterizing it as a tropical savanna climate. The region experiences a temperature range that underscores its climatic variability, with minimum temperatures dropping to 3°C (37°F) in July and soaring to maximums of 42°C (108°F) in October. On average, the annual temperature hovers around 24°C (76°F), reflecting a warm and predominantly humid environment that shapes both the local ecosystem and human activities in this vibrant Brazilian state.

Goiás temperature by month

The temperature patterns in Goiás, Brazil, showcase distinct seasonal variations throughout the year. January and February mark the warmest months, with average temperatures around 24°C to 25°C (76°F to 77°F), accompanied by maximums reaching up to 38°C (101°F). As the year progresses into March and April, slight cooling occurs, although average temperatures remain stable at 24°C (76°F). May and June bring a more noticeable drop, especially with minimums dipping to 4°C (40°F) in May and 8°C (47°F) in June, while averages settle around 22°C to 23°C (72°F to 73°F). July is the coolest month, with minimums falling to 3°C (37°F), before temperatures begin to rise again in August. The transition into the dry season is evident during September and October, where average temperatures rebound to around 27°C (81°F), pushing maximums to a sweltering 42°C (108°F) in October. By late November and December, the temperature patterns stabilize once more, reflecting averages of 24°C to 25°C (76°F to 77°F), with maximums consistently hitting the high 30s (°F), indicating a return to the earlier warmth of the year.

Monthly Temperatures in Goiás, Brazil

The chart illustrates Goiás's temperature patterns throughout the year, with values aggregated from various locations across the region. It highlights seasonal variations and temperature changes across the months.
JanFebMarAprMayJunJulAugSepOctNovDec767576757372717580807676
Data source: Goiás temperature data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

In Brazil's Goiás state, the cities of Anapolis, Caldas Novas, and Goiania experience significant temperature variations throughout the year. Anapolis records a minimum of 5°C (42°F) in May and peaks at 37°C (99°F) in October, while Caldas Novas also has a minimum of 5°C (41°F) in May and slightly higher maximums reaching 38°C (101°F) in October. Similarly, Goiania shows a consistent minimum of 5°C (42°F) in May and a maximum of 39°C (103°F) in October. For more detailed monthly temperatures, visit monthly temperatures in Anapolis, monthly temperatures in Caldas Novas, and monthly temperatures in Goiania.

Precipitation Patterns in Goiás

Goiás, Brazil, experiences a distinct precipitation pattern characterized by a concentrated rainy season from November to March. January is marked by substantial rainfall, averaging 145 mm (5.7 in) over approximately 15 days, while February intensifies the wet conditions with 233 mm (9.2 in) across 22 days. The trend continues into March, where 159 mm (6.3 in) of rain falls in 20 days, before gradually tapering off in the subsequent months. April sees a significant reduction to 84 mm (3.3 in) over 12 days, signaling the transition towards the drier season.

As the region moves into May and June, precipitation reaches minimal levels, with May recording a mere 14 mm (0.6 in) and June almost negligible at just 1 mm (0.0 in). The dry conditions persist through July and August, during which no measurable rainfall is recorded. While September sees a slight uptick with 9 mm (0.4 in) over 1 day, it is not until October that significant rainfall returns, amounting to 99 mm (3.9 in) over 13 days. The cycle recommences in November and December, with 198 mm (7.8 in) and 227 mm (8.9 in), respectively, each encompassing roughly 21 days of rain, reinforcing Goiás’s reputation for a pronounced wet season followed by a prolonged dry period.

Monthly Average Precipitation in Goiás, Brazil

The average monthly precipitation in Goiás, providing insights into seasonal rainfall patterns and the region's precipitation trends throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec1452331598414102999198227
Data source: Goiás precipitation data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.
Choose your preferred precipitation unit

Sunshine Duration in Goiás

In Goiás, Brazil, sunshine duration exhibits a clear seasonal trend, showcasing a steady increase from the cooler winter months to the warmer summer season. Starting off in January, the region enjoys a substantial 254 hours of sunshine, which gradually climbs to 262 hours in February. However, the peak occurs in the latter months of the summer, particularly in March and April, where sunshine hours reach 302 and 304 hours, respectively. This upward trajectory continues through May, achieving an impressive 322 hours, positioning it as one of the sunniest months of the year.

Moving into the drier period of mid-year, sunshine hours remain consistently high, with June recording 314 hours and July slightly increasing to 330 hours. The trend persists into August and September, with 331 hours and 327 hours, respectively, marking them as among the sunniest periods. As the year draws to a close, sunshine hours begin to decline, with November seeing 283 hours and December at 289 hours. This pattern underscores Goiás's vibrant climatic conditions, characterized by an abundance of sunshine, particularly during the summer months, coupled with a slight reduction as the region transitions back to the wet season.

Monthly Sunshine in Goiás, Brazil

Monthly sunshine duration represents the total hours of direct sunlight Goiás receives each month, excluding periods when the sun is obscured by clouds or other obstructions.
JanFebMarAprMayJunJulAugSepOctNovDec254h262h302h304h322h314h330h331h327h321h283h289h
Data source: Goiás sunshine duration data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.

Goiás UV Index Trends

In Goiás, Brazil, the UV Index demonstrates notably high levels year-round, with particularly extreme readings during the summer months. January and February lead the charge with a UV Index of 17, categorized as extreme, where even brief exposure can lead to skin damage in just 10 minutes. This extreme level continues through March and April, with values of 15 and 14, respectively, indicating a persistent risk for sunburn. Even in May, the UV Index maintains an extreme level of 11, emphasizing the need for protective measures against intense solar radiation as temperatures rise.

As the year progresses into the winter months, a slight reduction in UV radiation is observed. In June, the UV Index drops to 9, categorized as very high, allowing for a marginally longer safe exposure time of 15 minutes. July sees a minor increase to 10, while August climbs back to 12, indicating a resurgence of extreme conditions. The trend reverts to extremes by September and October, peaking at 14 and 15, and further reaching 16 in November, before concluding the year at 17 again in December. This consistent high UV Index throughout the year underscores the importance of sun safety measures for residents and visitors alike in Goiás.

Monthly Maximum UV Index for Goiás, Brazil

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Goiás. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec17171514119101214151617
Data source: Goiás UV Index data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

Daylight Hours in Goiás

In Goiás, Brazil, daylight duration remains relatively consistent throughout much of the year, with approximately 12 hours of daylight each day during the summer months of January, February, and March. This consistency highlights the subtropical climate of the region, where longer days prevail, allowing ample time for outdoor activities and agricultural practices. As the autumn months approach, daylight hours begin to gradually decrease, settling at 11 hours from April through September. This shift reflects the transition toward winter, although the change is subtle.

As the year comes to a close, daylight duration gradually increases once again. In October and November, daylight reverts to 12 hours, signaling a return to longer days. Notably, December marks the peak with 13 hours of daylight, coinciding with the height of summer in the Southern Hemisphere. This annual pattern of relatively stable daylight, punctuated by slight fluctuations, contributes to Goiás's vibrant ecosystem and seasonal activities, demonstrating the harmonious balance between light and climate in this Brazilian region.

Average Monthly Daylight Hours in Goiás, Brazil

This chart shows the total daylight hours Goiás receives each month, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec776h755h728h701h679h669h674h694h719h747h771h783h
Data source: Goiás daylight hours, calculated based on aggregated data for various regional locations, determined by the times between sunrise and sunset.

Climate Highlights of Goiás's Popular Destinations

Abadiania, Brazil experiences a tropical climate characterized by warm temperatures year-round and distinct wet and dry seasons. The average temperatures range from a mild 17°C (63°F) in January to around 5°C (41°F) in May, with peaks reaching up to 37°C (98°F) in October. Precipitation is heaviest from December to March, particularly in February with 261 mm (10.3 in), while the dry months from June to July see very little rain. Notably, the region enjoys abundant sunshine, with July receiving the highest at 330 hours. For more details, visit Abadiania climate.

Anápolis, Brazil, experiences a tropical climate characterized by warm temperatures and distinct wet and dry seasons. January and February are the wettest months, with significant rainfall of 158 mm and 278 mm respectively, while July sees virtually no precipitation. Temperatures range from a mild minimum of 5°C (42°F) in May to a hot maximum of 37°C (99°F) in October. The city enjoys ample sunshine throughout the year, with July boasting the highest sunshine hours at 330. For more detailed climate information, visit Anapolis climate.

Caldas Novas, Brazil, experiences a tropical climate characterized by warm temperatures year-round. January and February are the hottest months, with maximum temperatures reaching up to 35°C (96°F) and substantial precipitation, particularly in February with 213 mm (8.4 in). The cooler months from May to July see minimum temperatures drop to as low as 5°C (41°F) but remain mild, averaging around 21-22°C (69-72°F). Rainfall is minimal during the dry season (June and July), while monthly sunshine exceeds 300 hours, ensuring plenty of bright days. For more detailed information, visit Caldas Novas climate.

Goiania, Brazil experiences a tropical savanna climate characterized by warm temperatures throughout the year. January to March are typically the hottest months, with maximum temperatures reaching up to 39°C (103°F) in October, while minimums can drop to around 5°C (42°F) in May and July. Rainfall is heaviest from December to February, particularly in February with 225 mm (8.9 in), leading to a marked dry season from June to August. The city enjoys abundant sunshine, with July often recording up to 330 hours. For more details on the weather trends, visit Goiania climate.

The climate in Goiás, Brazil, features warm temperatures year-round, with average highs ranging from 23°C (74°F) in July to 41°C (106°F) in October. The wet season occurs from January to March, with February experiencing the highest precipitation at 223 mm (8.8 in), while the dry months of June and July see virtually no rainfall. Sunshine is abundant, especially in May and June, with over 300 hours of sunlight each month. Overall, Goiás enjoys a tropical climate with a distinct wet and dry season, making it an attractive destination Goias climate.

Pirenópolis, Brazil, experiences a tropical climate with a distinct wet and dry season. Temperatures range from a minimum of 7°C (44°F) in May to a maximum of 38°C (101°F) in October, with average highs typically around 24-26°C (75-79°F). The wettest months are February and December, featuring significant rainfall of 257 mm (10.1 in) and 291 mm (11.4 in), respectively. Sunshine is abundant, particularly from May to August, where it often exceeds 330 hours per month. For more detailed information, visit Pirenopolis climate.

Trindade, Brazil, experiences a tropical climate characterized by warm temperatures year-round. The average temperature ranges from a minimum of 5°C (42°F) in May to a maximum of 40°C (103°F) in October. Rainfall is concentrated in the beginning and end of the year, peaking in February (215 mm) and November (201 mm), while the driest months are June and July with negligible precipitation. The region enjoys abundant sunshine, particularly from April to July, with over 300 hours of sun each month. For more details, visit Trindade climate.

Conclusion

In conclusion, Goiás, Brazil, presents a unique climatic profile characterized by its tropical savanna climate, marked temperature fluctuations, significant precipitation patterns, high sunshine duration, and elevated UV Index values. The region experiences a distinct rhythm throughout the year, with pronounced wet and dry seasons that influence both local ecosystems and human activities. The abundance of sunlight and prolonged daylight hours during the summer months further enhance the liveliness of this area, making it vital for agriculture and outdoor pursuits. These climatic conditions necessitate awareness and preparation for the intense UV exposure, particularly in the summer. Understanding these elements is essential for residents and visitors alike, ensuring they can fully appreciate and enjoy the rich natural beauty and vibrant culture of Goiás while prioritizing their safety and well-being.

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