January Weather in Vassouras, Brazil

Last updated: August 21, 2025

In Vassouras, Brazil, January showcases a warm tropical climate, where maximum temperatures can soar to a sweltering 35°C (95°F), while the average temperature hovers around a comfortable 25°C (78°F). Nights offer a refreshing coolness, with minimums dropping to 16°C (62°F). During this month, residents can expect significant rainfall, totaling 201 mm (7.9 in) over the course of 17 wet days, contributing to the region's lush greenery. The atmosphere is notably humid, maintaining a humidity level of 85%, which can amplify the warmth and create a vibrant, tropical ambiance throughout the month.

January Temperature in Vassouras

In Vassouras, Brazil, January marks the peak of summer, showcasing a delightful range of temperatures that beautifully encapsulate the season's warmth. The month typically starts with mild evenings where temperatures dip to a comfortable 16°C (62°F), while daytime highs soar to a sizzling 35°C (95°F), creating an average of around 25°C (78°F) that invites outdoor activities and exploration. Compared to the preceding and following months, January stands out with higher maximum temperatures, indicating a gradual rise that peaks in the warmth of summer and a slight cool-down by February. This trend highlights the region's tropical climate, where humidity and heat can intensify, making early mornings and late afternoons the ideal times for enjoying the stunning landscapes and vibrant culture. Overall, January in Vassouras is a vibrant blend of sunshine and warmth, perfect for those seeking a taste of Brazilian summer.

January Weather in Vassouras: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Vassouras, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Vassouras, January typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec777675726867656671727274
Data source: Temperature data for Vassouras generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Vassouras

In January, Vassouras, Brazil, experiences substantial precipitation, with 201 mm (7.9 in) of rain falling over 17 days. This marks the beginning of the rainy season, setting the stage for a wet and vibrant start to the year. Comparatively, February witnesses an even higher deluge of 243 mm (9.6 in) across 20 days, emphasizing a pattern of increased rainfall that continues into the year. As the months progress, the rainfall gradually decreases, with April and May seeing considerably lower totals of 76 mm (3.0 in) and 59 mm (2.3 in), respectively. This trend highlights a transition toward drier conditions, culminating in July and August, where rainfall dips to just 20 mm (0.8 in) and 48 mm (1.9 in). However, the onset of October brings a resurgence, with 117 mm (4.6 in), indicating that while January begins the wet season, significant variability characterizes Vassouras' climate throughout the year.

January Precipitation Trends in Vassouras

The chart displays monthly precipitation patterns in Vassouras, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Vassouras, January typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec201243178765929204852117205228
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

January Humidity in Vassouras

In Vassouras, Brazil, January ushers in a high humidity level of 85%, mirroring the conditions experienced in February. As the months progress, there is a slight increase to 86% in March, likely influenced by the transition into the wetter season. However, the humidity begins to taper off in April to 83%, followed by a gradual decrease through the months leading to July, where it drops to 76%. From this point, humidity continues its downward trend, reaching a comfortable 61% by October, before slightly rebounding in November and December, settling at 72% and 75% respectively. This pattern illustrates a clear seasonal decline in humidity as winter approaches, making the later months of the year more pleasant compared to the muggy start in January.

January Average Humidity in Vassouras

This chart illustrates the average monthly humidity levels in Vassouras, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Vassouras is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%86%83%81%80%76%73%68%61%72%75%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Vassouras

In January, Vassouras, Brazil, experiences an extreme UV Index of 16, with a rapid burn time of just 10 minutes. This pattern continues into February and March, where the UV levels remain alarmingly high at 15 and 13, respectively, also falling into the extreme category. As the months progress towards April, the UV Index dips slightly to 11, still categorized as extreme. However, from May to July, there's a noticeable decline in UV intensity, with May reaching 8 (very high) and then stabilizing around 6-7 in June and July (high), allowing for safer sun exposure with burn times extending to 15 and 25 minutes. Yet, as summer approaches again in August, the index elevates to 9 before surging back to 11 in September and peaking at 13 again from October to November. This rhythm indicates a striking shift between extreme and very high UV exposure, underscoring the importance of sun protection throughout the year. Discover more about the UV Index trends in this region by visiting Vassouras UV Index.

Maximum UV Index Levels in Vassouras for January

The chart shows the monthly maximum UV Index (UVI) for Vassouras in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Vassouras typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec16151311867911131315
Data source: Vassouras January UVI data generated using information from the Copernicus Climate Change Service.

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.

January Sunshine in Vassouras

January in Vassouras, Brazil, welcomes visitors with 257 hours of sunshine, setting a vibrant tone for the year. As the month progresses into February, sunlight increases slightly to 264 hours, hinting at the approaching warmth of late summer. A steady climb peaks in March with 301 hours of bright days, showcasing the region's sunniest side as it transitions toward autumn. The sunshine remains generous in April, winding down to 289 hours, and continues through May and June, where it hovers around the 270s, creating an inviting atmosphere. By mid-year, July presents a return to 290 hours, ensuring that spirits stay high. The remaining months exhibit a gentle ebb and flow, with September and December experiencing 290 hours and 294 hours respectively, while August, October, and November comfortably nestle within the 260s. Overall, the sunshine patterns in Vassouras not only reflect the warmth of Brazilian summer but also create a delightful ambiance that encourages exploration and enjoyment all year round.

Monthly Sunshine Duration in Vassouras: January Highlighted

The January sunshine duration represents the total number of hours Vassouras experiences direct sunlight during the month of January, excluding cloudy or obstructed periods. This chart compares the sunshine duration of January with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec257h264h301h289h281h271h290h268h290h261h267h294h
Data source: Vassouras January Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Vassouras During January

In Vassouras, Brazil, January typically presents a 28% chance of sunny weather, making it one of the lesser sunny months when compared to the following March and April, which offer 40% and 46% respectively. As we observe the trend throughout the year, the likelihood of sunshine steadily increases, peaking in July at 60%. This upward trajectory continues into August and September, where sunny days remain favorable at 52% and 42%. Conversely, the months of October and November dip significantly, with only a 12% and 26% chance of sunshine respectively. Thus, while January may not be the sunniest month in Vassouras, the transition towards mid-year reveals a promising climb toward brighter days.

Percentage of Sunny Days in January in Vassouras

The chart illustrates the percentage of sunny days in Vassouras throughout the year, with January highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Vassouras experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec28%26%40%46%41%48%60%52%42%12%26%29%
Data source: Vassouras January chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Vassouras in January

In Vassouras, Brazil, January shines brightly with an impressive 13 hours of daylight, setting the tone for a sunlit month that invites outdoor activities and exploration. As the calendar turns to February and March, daylight slightly decreases to 12 hours, offering a more balanced, yet still generous, amount of sunshine. The trend continues with April and May dipping to 11 hours of daylight, hinting at the gradual transition towards the cooler months. This reduction persists into June and July, where daylight is at its shortest point with 10 hours, creating cozy, cooler evenings. However, as winter wanes, daylight starts to lengthen again in August and September, returning to 11 hours, before climbing back to 12 hours by October. Finally, November and December embrace the sunlight once more, matching the January high at 13 hours, allowing residents to bask in the warmth as they welcome the New Year. This rhythmic pattern of daylight reveals a vibrant interplay between sun and season, enriching life in Vassouras throughout the year.

Average Daylight Hours in Vassouras for January

The chart illustrates the variation in daylight duration in Vassouras throughout the year, with January highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec13h 19m12h 49m12h 10m11h 32m11h10h 45m10h 53m11h 21m11h 58m12h 36m13h 11m13h 28m
Data source: Vassouras daylight hours, calculated by summing the hours between sunrise and sunset for each day.

January Winds in Vassouras

In Vassouras, Brazil, the winds of January greet residents with an average speed of 2.0 m/s (5 mph), setting a gentle tone for the year ahead. This month marks the beginning of a slight upward trend in wind speeds, which gradually increase to 2.3 m/s (5 mph) by September, before settling into a more consistent pace of around 2.1 to 2.2 m/s (5 mph) as the year comes to a close. Notably, the winter months tend to be calmer, with February experiencing a dip to 1.6 m/s (4 mph), but the return to breezier conditions in the later months suggests a refreshing shift that energizes the landscape. Overall, January’s winds may be light, but they pave the way for a dynamic seasonal progression in Vassouras, keeping the environment vibrant and alive.

Average January Wind Speed in Vassouras

The chart displays monthly wind speed patterns in Vassouras, with values for each month shown alongside January's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how January's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.0 m/s1.61.71.71.51.71.82.22.32.12.22.1
Data source: Vassouras January wind data, generated using information from the Copernicus Climate Change Service.

How January Weather in Vassouras Compares to Other Months

Weather in Vassouras varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Vassouras, focusing on differences in temperature, rainfall, humidity, and UV levels.

In comparing the weather between January and February, we observe that both months experience high temperatures, with January having a minimum of 16°C (62°F) and an average of 25°C (78°F), while February sees slightly warmer conditions with a minimum of 18°C (64°F) and an average of 24°C (76°F). Interestingly, the maximum temperatures remain quite similar, hitting 35°C (95°F) in January and reaching 35°C (96°F) in February. However, February is characterized by higher precipitation levels, recording 243 mm (9.6 in) over 20 days compared to January's 201 mm (7.9 in) over 17 days. Both months maintain a consistent humidity level of 85%. For a more detailed look at February's climate, you can explore Vassouras weather in February.

In January, the weather is typically warmer, with average temperatures ranging from a minimum of 16°C (62°F) to a maximum of 35°C (95°F), while March sees slightly cooler averages, with temperatures ranging from 14°C (58°F) to 34°C (94°F). Precipitation in January is higher, totaling 201 mm (7.9 in) over 17 days, compared to March's 177 mm (7.0 in) over 19 days. Both months share similar humidity levels, with January at 85% and March slightly higher at 86%. For more details, you can check Vassouras weather in March.

In comparing the weather between January and April, January is notably warmer, with daily temperatures ranging from a minimum of 16°C (62°F) to a maximum of 35°C (95°F) and an average of 25°C (78°F). It also experiences significantly higher precipitation, with about 201 mm (7.9 in) over 17 days and humidity levels around 85%. In contrast, April sees milder temperatures, with a minimum of 13°C (55°F), an average of 22°C (72°F), and a maximum of 34°C (93°F). The rainfall in April is considerably less, totaling 76 mm (3.0 in) over 12 days, accompanied by a slightly lower humidity of 83%. For more detailed information, you can check Vassouras weather in April.

In January, the weather in Vassouras is typically hot and humid, with average temperatures ranging from a low of 16°C (62°F) to a maximum of 35°C (95°F). The month sees significant rainfall, with 201 mm (7.9 in) of precipitation over 17 days, contributing to a high humidity level of 85%. In contrast, May offers a cooler and drier experience, with temperatures averaging 20°C (68°F), peaking at 31°C (88°F) and dropping to a minimum of 7°C (45°F). The total precipitation in May is significantly lower at 59 mm (2.3 in) over just 8 days, resulting in a slightly less humid atmosphere, with humidity around 81%. For more detailed information, check out Vassouras weather in May.

In January, Vassouras experiences warm and humid weather, with temperatures ranging from a minimum of 16°C (62°F) to a maximum of 35°C (95°F), and an average of 25°C (78°F). This month also sees significant precipitation, with 201 mm (7.9 in) of rain falling over 17 days, contributing to a high humidity level of 85%. In contrast, June offers a cooler climate, with temperatures dropping to a minimum of 10°C (50°F) and a maximum of 31°C (89°F), averaging around 20°C (68°F). The rainfall is considerably less, totaling only 29 mm (1.1 in) over 7 days, and humidity decreases slightly to 80%. For more detailed insights into June weather, you can visit Vassouras weather in June.

January and July present stark contrasts in weather. In January, temperatures range from a minimum of 16°C (62°F) to a maximum of 35°C (95°F), with an average of 25°C (78°F). This month also sees significant rainfall, totaling 201 mm (7.9 in) over 17 days and high humidity levels at 85%. In sharp contrast, July experiences much cooler temperatures, with a minimum of 7°C (45°F) and an average of 18°C (65°F), peaking at 30°C (87°F). The precipitation in July is minimal at only 20 mm (0.8 in) over just 5 days and a lower humidity of 76%. For more details on Vassouras weather in July, visit Vassouras weather in July.

In January, Vassouras experiences significantly warmer weather, with temperatures ranging from a minimum of 16°C (62°F) to a maximum of 35°C (95°F) and an average of 25°C (78°F). This month is characterized by high humidity at 85% and substantial precipitation of 201 mm (7.9 in) over 17 days. In contrast, August presents a cooler climate, with temperatures dipping to a minimum of 6°C (43°F) and averaging around 19°C (66°F). The maximum temperature in August reaches 33°C (91°F), and the month sees much less rainfall, totaling only 48 mm (1.9 in) over 7 days, alongside a lower humidity level of 73%. For more details, you can check out Vassouras weather in August.

In January, the weather in Vassouras is characterized by significantly warmer temperatures, with minimums reaching 16°C (62°F) and averaging around 25°C (78°F), peaking at a hot 35°C (95°F). This month also experiences high humidity at 85% and substantial rainfall, with approximately 201 mm (7.9 in) over 17 rainy days. In contrast, September brings cooler weather, with a minimum temperature of 12°C (53°F), an average of 22°C (72°F), and a maximum of 36°C (97°F), suggesting it can still get quite warm. However, September boasts much lower precipitation, totaling 52 mm (2.0 in) across just 8 days, and the humidity decreases to 68%. For a more detailed look at what to expect, check out Vassouras weather in September.

When comparing the weather in January and October, it's evident that both months experience distinct conditions. January typically sees warmer temperatures, with average highs reaching up to 35°C (95°F) and an average humidity of 85%, making it feel quite tropical. In contrast, October offers slightly cooler temperatures, with maximums around 37°C (100°F) but lower humidity at 61%. Precipitation is also reduced in October, with only 117 mm (4.6 in) falling over 17 days, compared to January's 201 mm (7.9 in) during the same number of days. For more detailed information, you can check Vassouras weather in October.

In January, the weather is typically warmer with an average temperature of 25°C (78°F), while November sees a cooler average of 22°C (72°F). Both months can reach a high of 35°C (95°F), but January experiences slightly higher humidity at 85% compared to November's 72%. Precipitation levels are similar, with January receiving 201 mm (7.9 in) over 17 days, while November experiences a slightly higher total of 205 mm (8.1 in) over 19 days. For a detailed look at November conditions, check out Vassouras weather in November.

In comparing the weather of January and December, January tends to be slightly warmer, with average temperatures ranging from 25°C (78°F) to a peak of 35°C (95°F), while December experiences a slightly cooler average of 24°C (75°F), with maximum temperatures reaching 34°C (93°F). Precipitation levels in December are higher, totaling 228 mm (9.0 in) over 23 days, compared to January's 201 mm (7.9 in) over 17 days. Notably, January is marked by higher humidity at 85%, whereas December enjoys a more comfortable humidity level of 75%. For more details on December's weather, you can visit Vassouras weather in December.

Compare Vassouras's Climate with Cities Worldwide

Conclusion: What to Expect From January Weather in Vassouras

January in Vassouras is characterized by warm temperatures and high humidity, making it a stark contrast to the cooler and drier months that follow. With daytime highs reaching up to 35°C and an average of 85% humidity, the atmosphere can feel quite intense. Additionally, this month experiences substantial rainfall, contributing to the lush, tropical landscape that Vassouras is known for. This combination of heat and precipitation distinguishes January as a vibrant and lively month, ideal for appreciating the region's natural beauty. For a deeper insight into the overall climate trends, visit Vassouras Climate.