Climate and monthly weather forecast
São Gonçalo, Brazil

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The climate of São Gonçalo

São Gonçalo, located in Brazil, a country known for its vast geographical diversity, experiences an Aw climate, also known as the Tropical Wet and Dry or Savanna Climate, according to the Köppen climate classification. The city experiences variations in temperature and rainfall throughout the year.

Noticeable climatic variations occur during distinct segments of the year. The highest average temperatures range from 24.1°C (75.4°F) in June to 29.4°C (84.9°F) in February, while the lowest average temperatures fluctuate between 18.1°C (64.6°F) in August and 23.2°C (73.8°F) in February. On the other side of the spectrum, rainfall is unevenly spread throughout the year, with the highest monthly average rainfall of 135mm (5.31") in November and a low of 25mm (0.98") in July. These variations create a multifaceted combination of temperature and precipitation.

Humidity levels are relatively consistent throughout the year, with a variance between 77% in August and 82% in November. The mean annual daylight hours vary between 10.7 hours in June to 13.5 hours in December. Sunshine hours also show slight changes, hitting a peak of 9 hours in February and a low of 7.6 hours in October. The UV index oscillates between the highest value of 7 in January and December and a low of 5 in July.

Wind patterns show noticeable peaks and dips. While average wind speed varies from 8.4km/h (5.2mph) in March to 11km/h (6.8mph) in September, gusts can reach up to 16.4km/h (10.2mph) during the same month.

The best time to visit São Gonçalo

A determining factor for the best time to visit São Gonçalo depends highly on the preferences of individual visitors. For those seeking warm temperatures and low rainfall, February brings the warmest weather, with a high average temperature at 29.4°C (84.9°F), coupled with a relatively low rainfall of 74mm (2.91"). Furthermore, the city enjoys a generous amount of sunshine during this period, averaging at 9 sunshine hours per day, providing an ideal setting for outdoor activities.

The worst time to visit São Gonçalo

It appears that November could pose some challenges for visitors, considering the high rainfall. During this period, the average rainfall reaches its peak at 135mm (5.31") spread over 22.5 days of the month. So, if avoiding the rain is a priority, you might want to skip this month.

Spring weather in São Gonçalo

Spring months in São Gonçalo, from September to November, offer a combination of moderate temperatures and increased rainfall. During this period, the high temperatures range from 24.9°C (76.8°F) to 26.2°C (79.2°F) and low temperatures fluctuate between 19.2°C (66.6°F) to 21.2°C (70.2°F). Rainfall also sees an uptick during these months, starting at 51mm (2.01") in September and skyrocketing to 135mm (5.31") by November.

Summer weather in São Gonçalo

In São Gonçalo, summer spans from December to February, characterized by high temperatures and substantial rainfall. During this period, high temperatures average between 26.1°C (79°F) to 29.4°C (84.9°F), while low temperatures vary from 21.2°C (70.2°F) to 23.2°C (73.8°F). Rainfall during summer months remains considerable with an average of 93mm (3.66") in December, 74mm (2.91") in February, but dips to 60mm (2.36") in January.

Autumn weather in São Gonçalo

Autumn in São Gonçalo comes with milder temperatures and a decreasing trend in rainfall. From March to May, high temperatures reduce from 28.2°C (82.8°F) to 24.8°C (76.6°F), while low temperatures drop from 22.3°C (72.1°F) to 19.4°C (66.9°F). Correspondingly, rainfall decreases as well, reducing from 60mm (2.36") in March, to a notably lower 37mm (1.46") by May.

Winter weather in São Gonçalo

Typical of a tropical climate, winters in São Gonçalo are warm and mild. High temperatures during winter months of June to August range from 23.8°C (74.8°F) to 24.2°C (75.6°F) and lows from 18.2°C (64.8°F) to 18.3°C (64.9°F). Rainfall also reduces significantly during these months, reaching a yearly low of 25mm (0.98") in July, making winter the driest period in São Gonçalo.

Weather in January

Starting the year off in São Gonçalo, Brazil, January brings the heat with the highest humidity level, registering at 80%. The tropical climate of the city offers an ideal beach-loving atmosphere considering the rise in both temperature and daylight hours. Weather in January »

Weather in February

February in São Gonçalo continues January's tropical trend albeit with a slight decrease in humidity to 79%. Travellers interested in visiting during this month can expect warm temperatures along with considerable sunshine hours. Weather in February »

Weather in March

March ushers in the fall in São Gonçalo with weather conditions shifting bit by bit. While still warm, the city experiences a drop in temperature and slight increase in relative humidity, measuring at 82%. As daylight hours start to decrease, more overcast skies appear. Weather in March »

Weather in April

April's weather in São Gonçalo sees a continuation of the transition towards milder temperatures. The city experiences further drops in both temperature and daylight hours compared to March's weather conditions. Local flora flourish as April showers bring refreshment from the typically hot climate. Weather in April »

Weather in May

In May, São Gonçalo experiences further cooling as winds pick up speed, blowing at an average of 9.1km/h (5.7mph). This month is marked by noticeable reductions in both rainfall and daytime temperatures. Given the onset of cooler temperatures, local fauna begins to adapt to these conditions. Weather in May »

Weather in June

June's weather conditions in São Gonçalo represent mid-year climatic patterns. The city experiences continued cooling trends with the coldest temperatures of the year setting in. Despite these cool conditions, São Gonçalo receives an ample amount of sunshine. Weather in June »

Weather in July

In São Gonçalo, July offers continued cool conditions with a slight increase in average wind speed from 9.6km/h (6mph) to 10.9km/h (6.8mph). The dry season is at its peak, boasting the least rainfall throughout the year. Sunshine-filled days remain, offering a balanced environment for both adventure and relaxation. Weather in July »

Weather in August

August represents the transitioning period from winter to spring in São Gonçalo, and brings an increase in temperature. The city also experiences a rise in both rainfall and cloud coverage. Despite these changes, the amount of sunshine remains consistent, perfect for beach lovers. Weather in August »

Weather in September

September in São Gonçalo signals the full onset of spring, along with wind gusts peaking at 16.4km/h (10.2mph). The city bears witness to an increase in temperature coupled with the return of longer daylight hours. The arrival of vibrant flora and blossoming landscapes make the city a living canvas. Weather in September »

Weather in October

October's weather conditions in São Gonçalo continue showcasing spring's full bloom, but with growing cloud cover of 41%. The increase in rainfall creates a soothing atmosphere against the backdrop of the warming temperatures. Weather in October »

Weather in November

November in São Gonçalo brings temperatures reminiscent of the start of the year, culminating in the highest rainfall total, reaching 135mm (5.31"). This increase aligns with a rise in both cloud cover and humidity. The city becomes a showcase of contrasting warm, humid days and cool, soothing evenings. Weather in November »

Weather in December

In December, weather conditions in São Gonçalo signal the full effects of the summer season. While temperature levels remain stable, the amount of rainfall decreases from November's high but still remains relatively high at 103mm (4.06"). Weather in December »
Updated: Feb 2, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

How many days does it rain in São Gonçalo?

In São Gonçalo, during the entire year, the rain falls for 179.5 days and collects up to 747mm (29.41") of precipitation.

When is the highest UV index in São Gonçalo?

The months with the highest UV index in São Gonçalo are January and December, with an average maximum UV index of 7.

What time of the year is the hottest in São Gonçalo?

During the warmest month in São Gonçalo, February, temperatures average a high of 29.4°C (84.9°F) and a low of 23.2°C (73.8°F).

What month has the most sunshine in São Gonçalo?

February has the most sunshine of the year, with an average of 9h of sunshine.

What is the most humid month in São Gonçalo?

The months with the highest humidity in São Gonçalo are March, November and December, with an average relative humidity of 82%.

What is the month with the shortest days in São Gonçalo?

The month with the shortest days is June, with an average of 10h and 48min of daylight.

What month is the coldest in São Gonçalo?

July, with its high-temperature average of 23.8°C (74.8°F) and a low-temperature average of 18.2°C (64.8°F), is the coldest month in São Gonçalo.

What is the driest month in São Gonçalo?

The month with the least rainfall in São Gonçalo is July, when the rain falls for 8.9 days and typically collects 25mm (0.98") of precipitation.

What are the months with the lowest UV index in São Gonçalo?

The months with the lowest UV index in São Gonçalo, Brazil, are July and September, with an average maximum UV index of 5.

What is the least humid month in São Gonçalo?

August is the least humid month in São Gonçalo, with an average relative humidity of 77%.

What is the month with the least sunshine in São Gonçalo?

The month with the least sunshine is October, with an average of 7.6h of sunshine.

What is the wettest month in São Gonçalo?

The month with the most rainfall is November, when the rain falls for 22.5 days and typically aggregates up to 135mm (5.31") of precipitation.

When are the longest days in São Gonçalo?

The month with the longest days in São Gonçalo is December, with an average of 13h and 30min of daylight.

Is there Daylight Saving Time (DST) in São Gonçalo?

São Gonçalo, Brazil, does not observe Daylight Saving Time (DST). -03 timezone is used over the entire year.

Average temperature
São Gonçalo, Brazil

Average temperature - São Gonçalo, Brazil

The warmest month (with the highest average high temperature) is February (29.4°C).
The month with the lowest average high temperature is July (23.8°C).

The months with the highest average low temperature are January and February (23.2°C).
The coldest month (with the lowest average low temperature) is August (18.1°C).

Average pressure
São Gonçalo, Brazil

Average pressure - São Gonçalo, Brazil

The month with the highest atmospheric pressure is July (1020.5mbar).
The month with the lowest atmospheric pressure is December (1011.9mbar).

Average wind speed
São Gonçalo, Brazil

Average wind speed - São Gonçalo, Brazil

The windiest month (with the highest average wind speed) is September (11km/h).
The calmest month (with the lowest average wind speed) is March (8.4km/h).

Average humidity
São Gonçalo, Brazil

Average humidity - São Gonçalo, Brazil

The months with the highest relative humidity are March, November and December (82%).
The month with the lowest relative humidity is August (77%).

Average rainfall
São Gonçalo, Brazil

Average rainfall - São Gonçalo, Brazil

The wettest month (with the highest rainfall) is November (135mm).
The driest month (with the least rainfall) is July (25mm).

Average rainfall days
São Gonçalo, Brazil

Average rainfall days - São Gonçalo, Brazil

The month with the highest number of rainy days is November (22.5 days).
The month with the least rainy days is July (8.9 days).

Average daylight / Average sunshine
São Gonçalo, Brazil

Average daylight / Average sunshine - São Gonçalo, Brazil

The month with the longest days is December (Average daylight: 13h and 30min).
The month with the shortest days is June (Average daylight: 10h and 48min).

The month with the most sunshine is February (Average sunshine: 9h and 0min).
The month with the least sunshine is October (Average sunshine: 7h and 36min).

Average sunshine days
São Gonçalo, Brazil

Average sunshine days - São Gonçalo, Brazil

The month with the most sunshine days is July (20.2 days).
The month with the least sunshine days is November (5.5 days).

Average UV index
São Gonçalo, Brazil

Average UV index - São Gonçalo, Brazil

The months with the highest UV index are January and December (UV index 7).
The months with the lowest UV index are July and September (UV index 5).

Average visibility
São Gonçalo, Brazil

Average visibility - São Gonçalo, Brazil

The months with the highest visibility are February, May, June, July and August (10km).
The months with the lowest visibility are January, March, April, September, October, November and December (9km).

São Gonçalo, Brazil

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