May Weather in Guaratuba, Brazil

Last updated: August 21, 2025

May in Guaratuba, Brazil is characterized by a warm yet refreshing climate, with maximum temperatures reaching up to 29°C (84°F) and an average temperature around 21°C (69°F). Visitors can expect cooler evenings, as the minimum temperature dips to 11°C (52°F). This month experiences significant rainfall, with precipitation totals of approximately 127 mm (5.0 in) spread over about 15 days, contributing to a humidity level of 86%. The combination of warmth, moisture, and occasional rain creates a lush, vibrant environment, perfect for those looking to immerse themselves in the natural beauty of this coastal gem.

May Temperature in Guaratuba

In May, Guaratuba experiences a noticeable transition in temperatures as autumn sets in. The minimum temperature dips to 11°C (52°F), providing a refreshing chill compared to the warmer months of January through April. With an average of 21°C (69°F), daytime remains pleasantly mild, while the maximum reaches a comfortable 29°C (84°F), perfect for outdoor activities. This month marks a shift, as the cooler nights set the stage for cozy evenings, offering a delightful balance to the typically warmer climate experienced earlier in the year. May in Guaratuba is an ideal time for visitors to enjoy the region's natural beauty without the heat of summer, making it a tranquil escape for those seeking comfort in their surroundings.

May Weather in Guaratuba: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Guaratuba, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Guaratuba, May 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).
JanFebMarAprMayJunJulAugSepOctNovDec797777736966646468707275
Data source: Temperature data for Guaratuba generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Guaratuba

In Guaratuba, Brazil, the month of May brings a moderate precipitation total of 127 mm (5.0 in), observed over approximately 15 days of rain. This marks a slight increase from the drier months of March and April, yet it remains significantly lower than the torrential rains typically seen earlier in the year, such as January's 237 mm. The trend in May suggests a transition towards drier conditions as winter approaches, with rainfall continuing to taper off in June to 113 mm. Despite the decrease, May's precipitation is crucial for maintaining the lush landscape that characterizes this vibrant coastal region, as it sets the stage for the drier months ahead while still nurturing the environment.

May Precipitation Trends in Guaratuba

The chart displays monthly precipitation patterns in Guaratuba, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Guaratuba, May typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec237213203115127113327291167153193
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Guaratuba

In May, Guaratuba, Brazil, experiences a humidity level of 86%, which aligns with the generally high moisture levels prevalent throughout the year. This trend of elevated humidity is a characteristic feature of the region, especially notable in the first half of the year, where values consistently hover around the mid-80s. As temperatures begin to rise, May stands as a transitional month before the gradual decline in humidity begins in July, dropping to 80%. However, the high humidity persists in the following months, with November and December returning to 86% and 88%, respectively, highlighting the region's tropical climate. Overall, May's humidity reinforces Guaratuba's reputation for lush landscapes and vibrant natural beauty, drawing in those who appreciate its warm, verdant environment.

May Average Humidity in Guaratuba

This chart illustrates the average monthly humidity levels in Guaratuba, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Guaratuba is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%83%85%85%86%85%80%79%82%82%86%88%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Guaratuba

In May, Guaratuba experiences a UV Index of 7, placing it in the high exposure category, with a burn time of just 25 minutes. This marks a noticeable shift from the extreme levels seen in the earlier months, where January to March had indices soaring to 15 and 14, necessitating a mere 10 minutes of sun exposure before burning. As the year progresses into summer, the UV levels remain noteworthy, typically peaking again in the following months. If you're planning to soak up the sun, it's crucial to stay informed about the UV Index; check out Guaratuba UV Index for the latest updates and tips on sun safety.

Maximum UV Index Levels in Guaratuba for May

The chart shows the monthly maximum UV Index (UVI) for Guaratuba in May, 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 May, the maximum UV index in Guaratuba typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec15141210766810131414
Data source: Guaratuba May 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.

May Sunshine in Guaratuba

May in Guaratuba, Brazil, brings a pleasant average of 247 sunshine hours, continuing the vibrant trend established in the earlier months of the year. Following the warmth of March's peak at 289 hours, sunshine slightly dips in April but rebounds to a commendable level in May. As the year progresses, this month maintains a delicate balance of sunny days, nestled between the lush wet season and the impending cooler winter months. Notably, the trend in Guaratuba's sunshine reveals a significant increase in the latter part of the year, with November and December shining brightly with 300 and 317 hours, respectively. Overall, May captures the essence of tropical radiance, a perfect transition before the cooler times set in.

Monthly Sunshine Duration in Guaratuba: May Highlighted

The May sunshine duration represents the total number of hours Guaratuba experiences direct sunlight during the month of May, excluding cloudy or obstructed periods. This chart compares the sunshine duration of May with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec243h278h289h281h247h219h256h241h236h242h300h317h
Data source: Guaratuba May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Guaratuba During May

In Guaratuba, Brazil, the month of May brings a promising 42% chance of sunny weather, marking a slight increase from the previous months of April and March, which saw sun chances at 38% and 30%, respectively. This trend of improving sunny prospects continues as the year progresses, especially leading into the dryer winter months, when the likelihood of sunshine peaks in July at an impressive 57%. Overall, May stands out as a favorable time for outdoor activities, as it not only benefits from a higher probability of sunshine but also serves as a transition into the sunnier days ahead.

Percentage of Sunny Days in May in Guaratuba

The chart illustrates the percentage of sunny days in Guaratuba throughout the year, with May 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 Guaratuba experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec15%41%30%38%42%35%57%30%26%13%28%31%
Data source: Guaratuba May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Guaratuba in May

In Guaratuba, Brazil, the daylight duration showcases a clear seasonal rhythm, beginning with 13 hours in January and gradually declining to 10 hours by May, where it remains through June and July. This slight dip signals the onset of winter, marking the shortest days of the year. As August arrives, daylight begins to stretch once more, moving into 11 hours and ultimately returning to 13 hours in November and December, ushering in the summer months. This cyclical pattern not only highlights the region's tropical climate but also invites residents and visitors alike to enjoy varying daylight across seasons, ensuring each month has its unique charm.

Average Daylight Hours in Guaratuba for May

The chart illustrates the variation in daylight duration in Guaratuba throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec13h 31m12h 56m12h 11m11h 26m10h 49m10h 31m10h 41m11h 13m11h 56m12h 42m13h 22m13h 42m
Data source: Guaratuba daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Guaratuba

In Guaratuba, Brazil, May typically features a gentle breeze, with an average wind speed of 2.5 m/s (6 mph). This marks a slight dip from the more robust winds of April and stands as a transitional moment before the breezier months of June and October, which see speeds of 2.8 m/s (6 mph) and 3.3 m/s (7 mph), respectively. Overall, the wind pattern from January to May reveals a gradual fluctuation, with February and March feeling the calmest at just 2.3 m/s (5 mph). As the year progresses, the return of stronger winds in the late spring and early summer suggests a shift that will invigorate the coastal atmosphere, perfect for outdoor activities and enjoying the beautiful landscapes.

Average May Wind Speed in Guaratuba

The chart displays monthly wind speed patterns in Guaratuba, with values for each month shown alongside May's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how May's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.02.32.33.02.5 m/s2.82.32.62.83.33.13.1
Data source: Guaratuba May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Guaratuba Compares to Other Months

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

When comparing the weather in May and January, it's clear that January experiences warmer temperatures, with average highs reaching up to 36°C (97°F) compared to May's maximum of 29°C (84°F). Additionally, January sees higher total precipitation, with 237 mm (9.3 in) over 21 days, while May has 127 mm (5.0 in) spread across 15 days. Interestingly, both months share similar humidity levels at 86%, but the overall climate feels markedly different due to the temperature variations. For more detailed insights, you can refer to Guaratuba weather in January.

When comparing the weather in May and February, several key differences emerge. In February, the temperature ranges from a minimum of 18°C (65°F) to a maximum of 34°C (94°F), with an average temperature of 25°C (78°F), making it generally warmer than May. The humidity is slightly lower at 83%, yet February sees more precipitation, with 213 mm (8.4 in) over 20 rainy days, compared to May's 127 mm (5.0 in) across 15 days. In May, temperatures average around 21°C (69°F), with a milder max of 29°C (84°F), creating a more temperate climate overall. For more specifics on February's weather, you can check Guaratuba weather in February.

In comparing the weather between May and March, May generally presents milder temperatures with a minimum of 11°C (52°F), an average of 21°C (69°F), and a maximum of 29°C (84°F). In contrast, March tends to be warmer, featuring minimum temperatures of 19°C (66°F), an average of 25°C (77°F), and reaching up to a maximum of 32°C (90°F). Additionally, March experiences significantly more precipitation, totaling 203 mm (8.0 in) over 24 days, compared to May's 127 mm (5.0 in) over 15 days. Humidity levels remain relatively similar in both months, with March at 85% and May at 86%. For more details, you can check Guaratuba weather in March.

In comparison to April, May experiences slightly cooler temperatures, with minimums around 11°C (52°F) and maximums reaching 29°C (84°F), whereas April ranges from a minimum of 14°C (58°F) to a maximum of 32°C (91°F). Despite the lower temperatures in May, the average humidity remains high at 86%, just slightly above April's 85%. Additionally, both months see considerable rainfall, with May receiving 127 mm (5.0 in) over 15 days, compared to April's 115 mm (4.5 in) over 17 days. For more detailed insights into April weather, you can check Guaratuba weather in April.

In comparing the weather between May and June, we notice a slight decline in temperatures as June features a minimum of 9°C (48°F) compared to May's 11°C (52°F). The average daily temperature also drops, with May averaging 21°C (69°F) while June sees a slightly cooler 19°C (67°F). Maximum temperatures remain quite similar, with June reaching 28°C (83°F) and May peaking at 29°C (84°F). Precipitation is fairly comparable too, with May experiencing 127 mm (5.0 in) over 15 days, whereas June records 113 mm (4.5 in) over 12 days. Humidity levels are also similar, at 86% in May and 85% in June. For more specific insights into the climate during June, you can visit Guaratuba weather in June.

May typically brings warmer temperatures compared to July, with averages around 21°C (69°F) and a maximum reaching up to 29°C (84°F). In contrast, July experiences a cooler average temperature of 18°C (64°F) and a minimum of 7°C (44°F). Additionally, May is characterized by significantly higher precipitation, totaling 127 mm (5.0 in) over 15 days, while July sees much less rainfall at 32 mm (1.2 in) over just 7 days. Humidity levels are slightly elevated in May at 86%, compared to July's 80%. For more detailed information, you can check Guaratuba weather in July.

May and August in Guaratuba present distinct weather patterns that reflect the transition from late spring to early autumn. In May, temperatures range from a minimum of 11°C (52°F) to a maximum of 29°C (84°F), with an average of 21°C (69°F). This month sees higher rainfall, with 127 mm (5.0 in) spread over 15 days, and humidity levels are relatively high at 86%. In contrast, August offers cooler temperatures, with a minimum of 8°C (46°F) and an average of 18°C (65°F), peaking at 28°C (82°F). Precipitation decreases to 72 mm (2.8 in) over 11 days, and humidity drops to 79%. Overall, while May is warmer and wetter, August offers a more moderate climate with less rain. For more details, you can check Guaratuba weather in August.

May and September present a transition in weather patterns, with May generally being warmer and more humid than September. In May, temperatures range from a minimum of 11°C (52°F) to a maximum of 29°C (84°F), with an average of 21°C (69°F) and a notable 127 mm (5.0 in) of precipitation over 15 days. Conversely, September features slightly higher minimum temperatures of 12°C (54°F) and a similar maximum of 28°C (82°F), but with a lower average of 20°C (68°F) and reduced precipitation of 91 mm (3.6 in) across 14 days. The humidity also diminishes slightly from 86% in May to 82% in September, making the latter month feel a bit more comfortable. For more details, you can check the Guaratuba weather in September.

In comparing the weather between May and October, both months exhibit mild average temperatures, with October slightly warmer, showcasing a minimum of 16°C (60°F) and a maximum of 31°C (89°F), compared to May's minimum of 11°C (52°F) and maximum of 29°C (84°F). While May experiences a higher humidity level at 86%, October offers a slightly drier atmosphere at 82%. Additionally, October tends to be wetter, with 166 mm (6.6 in) of precipitation over 19 days, compared to May’s 127 mm (5.0 in) across 15 days. For more specific details about October weather, you can check Guaratuba weather in October.

May and November showcase distinct yet relatively mild weather patterns. In May, temperatures range from a minimum of 11°C (52°F) to a maximum of 29°C (84°F), with an average of 21°C (69°F). This month experiences about 127 mm (5.0 in) of precipitation over 15 days, contributing to a humid environment with an average humidity of 86%. In contrast, November features slightly warmer conditions, with minimum temperatures at 15°C (60°F) and maximums reaching 32°C (89°F), while the average sits at 22°C (72°F). Precipitation increases to 153 mm (6.0 in), spread over about 20 days, maintaining the same humidity level of 86%. Thus, while both months are humid, November tends to be warmer and wetter than May. For a more detailed look at November weather, visit Guaratuba weather in November.

May and December present distinct weather patterns. In May, temperatures range from a cool 11°C (52°F) to a warm 29°C (84°F), with an average of 21°C (69°F). The month sees about 127 mm (5.0 in) of precipitation over 15 days, accompanied by a humidity level of 86%. In contrast, December boasts a milder minimum temperature of 18°C (64°F) and can reach a maximum of 32°C (89°F), averaging 24°C (76°F). Precipitation increases to 193 mm (7.6 in) spread across 20 days, with humidity slightly higher at 88%. For more insights, check Guaratuba weather in December.

Compare Guaratuba's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Guaratuba

May in Guaratuba ushers in a cooler ambiance compared to the warmer months, with a pleasant average temperature that invites outdoor exploration. While the days remain comfortably warm, the nights can be crisp, perfect for cozy gatherings. This month also sees an increase in precipitation, contributing to the region's lush greenery. With humidity levels peaking, May stands out as a transitional month that balances the vibrancy of spring with the cooler whispers of the approaching winter. For a detailed insight into the climate, check out Guaratuba Climate.