Last updated: August 21, 2025
In December, São Francisco, Brazil experiences warm and humid weather, with maximum temperatures soaring up to 37°C (100°F) and an average of 26°C (79°F). The evenings can be mild, dipping to a minimum of around 19°C (66°F). This month also brings notable rainfall, accumulating to 168 mm (6.6 in) over approximately 17 days, contributing to a humidity level of 54%. Visitors can expect a mix of sunny spells and refreshing showers, making it a vibrant time to explore the region.
In December, Sao Francisco experiences a warm climate that sets the stage for summer, with minimum temperatures around 19°C (66°F) and averages peaking at 26°C (79°F). As the month progresses, the thermometer can soar to a maximum of 37°C (100°F), highlighting the area's tendency for hotter days. Compared to November, where the temperatures begin to rise, December maintains much of the same warmth with similar averages, yet offers a touch more intensity in the highs, reminiscent of the approaching summer months. Overall, December in Sao Francisco is characterized by balmy evenings and sun-soaked days, making it an inviting time for both locals and visitors to embrace the vibrant atmosphere.
December in São Francisco, Brazil, marks a significant increase in precipitation, with 168 mm (6.6 in) of rainfall spread over 17 days. This surge follows the pattern established in November, where 152 mm (6.0 in) fell across 16 days, indicating a trend of heightened rainfall as the year comes to a close. In contrast to the dry months preceding it—especially June and July, which saw virtually no rain—December's climate exhibits the city's wet season at its peak. The uptick in precipitation not only enriches the local environment but also adds a sense of vibrancy as the region transitions into the warmer summer months. This notable shift underscores São Francisco's dynamic weather patterns and highlights the importance of December as a month of renewal and abundance.
As December rolls in, Sao Francisco, Brazil experiences a shift in humidity levels, settling at a comfortable 54%. This marks a significant decrease from the soaring heights of 86% in March and the relatively high 84% in February, painting a picture of a humid summer gradually giving way to a drier season. Following a trend of declining humidity from the peak of mid-year, October saw the lowest levels at 44%, but December’s slight uptick from November's 45% suggests a subtle shift back toward the moist conditions characteristic of earlier months. Overall, while December offers a respite from the more oppressive humidity of the preceding months, it still retains a touch of the atmospheric moisture that defines the region's tropical climate.
In December, Sao Francisco, Brazil, experiences a UV Index of 15, categorizing it as extreme and highlighting the necessity for protective measures against intense sun exposure. This high level of UV radiation aligns with the trend observed throughout the year, where the sun’s rays consistently demand vigilance. Notably, the burn time remains a swift 10 minutes, indicating that even brief exposure can lead to skin damage if precautions are not taken. As we transition from a year filled with similarly extreme values—peaking at 16 in January and holding strong at 15 in November—it becomes clear that December is just another reminder of the importance of sun safety in this vibrant region. For more detailed insights into the UV conditions, visit Sao Francisco UV Index.
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Basking in the delightful Brazilian sun, December brings 299 hours of sunshine to São Francisco, marking a vibrant close to the year. As the months progress, a captivating trend emerges: the city enjoys its sunniest stretch from July to September with peaks of 324 and 336 hours, driving the winter chill away. With early summer settling in by December, sunlight casts a warm glow, although it slightly dips from the highs of the previous months. This mild decrease is typical of the transition into the new year, yet residents and visitors alike can still soak in the welcoming rays, making every moment a joyous celebration of summer in Brazil.
In December, the likelihood of experiencing sunny weather in São Francisco, Brazil, is notably low at only 19%. This trend continues from November, which already sees a dismal 11% chance of sunshine, marking a sharp contrast to the more sun-drenched months that precede it. As we look at the yearly progression, there's a clear upward trajectory in sunshine opportunities during the middle of the year, peaking at an impressive 86% in July. However, the month of December, wedged between the lows of late spring and the summer brightness, appears to follow a pattern of diminishing sunlight, making it one of the least favorable months for basking in the sun.
In São Francisco, Brazil, December marks a delightful shift in daylight duration, offering 13 hours of sunshine—the longest of the year. This increase from the consistent 12 hours in the preceding months of September through November highlights a trend of gradually diminishing daylight as the calendar year progresses, particularly from April to August, where the duration dips to 11 hours. As the year wraps up and summer approaches in the Southern Hemisphere, the return to longer days in December not only enhances the vibrant atmosphere of the city but also sets the stage for the sunny months ahead, inviting both locals and tourists to enjoy the extended daylight during festivities and exploration.
As December rolls into São Francisco, Brazil, the winds begin to mellow, bringing a gentle breeze that mirrors the festive spirit of the season. With an average wind speed dipping to 1.9 m/s (4 mph), this month experiences one of the quieter wind patterns of the year. This shift is notable when compared to the preceding months, where winds progressively increased to a peak in August at 3.2 m/s (7 mph). Following a summer of brisker gusts, December's calm offers a serene contrast, as the city embraces the warmth and celebration of the holidays, making it an ideal time for leisurely strolls along the stunning coastal vistas.
Weather in Sao Francisco varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Sao Francisco, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between December and January, December tends to be slightly cooler with minimum temperatures of 19°C (66°F) and an average of 26°C (79°F), while January sees a marginal increase with a minimum of 20°C (67°F) and an average of 27°C (81°F). Although both months can reach a maximum of 37°C (100°F), January is usually a bit more humid, boasting a humidity level of 76% compared to December's 54%. Additionally, December experiences significantly more rainfall, with 168 mm (6.6 in) over 17 days, whereas January has only 70 mm (2.7 in) of precipitation over 8 days. For more details on January weather, you can check Sao Francisco weather in January.
December and February exhibit similar average temperatures, hovering around 26°C (79°F), but February tends to be slightly warmer with a higher maximum temperature of 38°C (101°F) compared to December’s maximum of 37°C (100°F). Precipitation levels increase from December to February, with December receiving 168 mm (6.6 in) over 17 days, while February sees a total of 183 mm (7.2 in) across 16 days. Additionally, February is notably more humid, with humidity levels reaching 84%, in contrast to December's 54%. For more detailed insights, you can check Sao Francisco weather in February.
In December, the weather in Sao Francisco features warm temperatures, with a minimum of 19°C (66°F) and a maximum reaching up to 37°C (100°F). The month sees considerable rainfall, totaling 168 mm (6.6 in) over about 17 days, and a balanced humidity level of 54%. In contrast, March offers slightly cooler temperatures, with a minimum of 18°C (65°F) and a maximum of 36°C (98°F). Precipitation decreases to 122 mm (4.8 in) over approximately 12 days, but humidity rises significantly to 86%. For more detailed insights, check out the Sao Francisco weather in March.
When comparing the weather between December and April, we notice some interesting contrasts. December features higher temperatures, with a minimum of 19°C (66°F) and a maximum reaching up to 37°C (100°F), while April's temperatures are slightly cooler, with a minimum of 17°C (64°F) and a maximum of 35°C (95°F). Additionally, December experiences significantly more precipitation, totaling 168 mm (6.6 in) over 17 days, compared to April's 43 mm (1.7 in) across just 8 days. This contributes to April's higher humidity level of 81%, versus December's more comfortable 54%. For more detailed insights, you can check out Sao Francisco weather in April.
December and May offer contrasting weather experiences, with December being significantly warmer and wetter. In December, temperatures range from a minimum of 19°C (66°F) to a maximum of 37°C (100°F), with an average of 26°C (79°F) and substantial precipitation of 168 mm (6.6 in) over 17 days, coupled with relatively moderate humidity at 54%. In contrast, May presents cooler temperatures, with a minimum of 9°C (48°F) and a maximum of 35°C (95°F), averaging 25°C (76°F). The month is notably drier, with only 14 mm (0.5 in) of precipitation over just 2 days, but it is accompanied by higher humidity at 74%. For more detailed insights on the weather conditions, you can visit Sao Francisco weather in May.
In December, the weather in São Francisco showcases a warm climate, with temperatures ranging from a minimum of 19°C (66°F) to a sweltering maximum of 37°C (100°F) and an average of 26°C (79°F). This month also brings considerable rainfall, with approximately 168 mm (6.6 inches) spread over 17 days, contributing to a humidity level of 54%. In contrast, June presents a cooler atmosphere, with temperatures dipping to a minimum of 14°C (57°F) and peaking at 34°C (94°F), averaging 24°C (76°F). Remarkably dry, June receives just 1 mm of precipitation over the entire month, with no rainy days, resulting in a higher humidity level of 72%. For a detailed look at the weather conditions in June, you can check Sao Francisco weather in June.
December and July present contrasting weather patterns. In December, temperatures range from a minimum of 19°C (66°F) to a maximum of 37°C (100°F), with an average of 26°C (79°F). This month experiences significant precipitation, averaging 168 mm (6.6 in) over 17 rainy days, coupled with a moderate humidity level of 54%. In contrast, July is cooler and drier, with temperatures ranging from 13°C (56°F) to 35°C (95°F) and an average of 23°C (74°F). Notably, there is no recorded rainfall in July, resulting in 0 mm of precipitation and a higher humidity level of 69%. For more information, check out Sao Francisco weather in July.
In December, the weather is characterized by warmer temperatures, with a minimum of 19°C (66°F) and an average of 26°C (79°F), reaching highs of up to 37°C (100°F). This month also experiences significant rainfall, averaging 168 mm (6.6 in) over 17 days, with humidity at 54%. In contrast, August features milder temperatures, with a minimum of 14°C (58°F) and an average of 25°C (78°F), peaking at 36°C (97°F). Notably, August has minimal precipitation, with just 3 mm (0.1 in) and no rainy days, though the humidity is slightly higher at 64%. For more details, you can check Sao Francisco weather in August.
When comparing the weather in December and September, December tends to be slightly cooler with an average temperature of 26°C (79°F) compared to September's warmer average of 28°C (82°F). However, September can reach higher maximum temperatures of up to 40°C (104°F), while December peaks at 37°C (100°F). Rainfall is significantly more common in December, with 168 mm (6.6 in) of precipitation over 17 days, whereas September experiences almost no rain, recording only 4 mm (0.1 in) over zero days. Humidity levels are similar, with December at 54% and September slightly higher at 55%. For more detailed information on September's climate, you may visit Sao Francisco weather in September.
Comparing the weather of December and October reveals some notable differences. In December, temperatures range from a minimum of 19°C (66°F) to a maximum of 37°C (100°F), with an average temperature of 26°C (79°F). This month also experiences significantly higher precipitation, averaging 168 mm (6.6 in) over 17 days, and a humidity level of 54%. In contrast, October boasts slightly cooler average temperatures ranging from a minimum of 18°C (65°F) to a maximum of 41°C (105°F) with an average of 29°C (84°F) and considerably less rainfall at 70 mm (2.7 in) over just 8 days, alongside a lower humidity of 44%. For more detailed insights about October weather, visit Sao Francisco weather in October.
In comparing the weather of December and November, both months exhibit similar minimum and average temperatures, remaining at a consistent 19°C (66°F) and 26°C (79°F), respectively. However, November reaches a higher maximum temperature of 40°C (103°F) compared to December's peak of 37°C (100°F). Precipitation in December is slightly increased, with 168 mm (6.6 in) of rain over 17 days, compared to 152 mm (6.0 in) across 16 days in November, while December experiences a higher humidity level at 54% versus November's 45%. For more detailed information, you can visit Sao Francisco weather in November.
In December, Sao Francisco experiences a distinct transformation compared to the cooler and drier months earlier in the year. With a noticeable rise in temperatures, days can reach up to an invigorating 37°C (100°F), adding warmth to both the air and the festive spirit of the season. However, this month also brings an increase in precipitation, with nearly half the month experiencing rainfall, making it one of the wetter months. The humidity, hovering around 54%, adds a tropical flair to the air, creating a vibrant atmosphere perfect for outdoor activities. For a deeper dive into what to expect throughout the year, visit Sao Francisco Climate.