September weather forecast
Ubatuba, Brazil

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Weather in September

September marks the end of Ubatuba's dry season, with a noticeable increase in rainfall to 51mm (2.01"). This initiates the city's transition into the wetter half of the year. However, favorable temperatures persist, reflecting Ubatuba's perennial warm climate. The steady climb in sea temperature, paired with longer sunshine hours, sugests a return of the beach season. Absence of heavy cloud cover ensures ample daylight for various outdoor activities, whilst, the ascending wind speed adds a hint of crispness to the balmy weather.

Temperature

The initiation of September sees an average high-temperature of a warm 24°C (75.2°F), showing minor variations from the previous month. Ubatuba observes an average nighttime low-temperature of 14.5°C (58.1°F) during the month of September.

Humidity

The months with the lowest humidity in Ubatuba are August and September, with an average relative humidity of 79%.

Rainfall

In Ubatuba, in September, it is raining for 15.7 days, with typically 51mm (2.01") of accumulated precipitation. In Ubatuba, Brazil, during the entire year, the rain falls for 223.3 days and collects up to 1225mm (48.23") of precipitation.

Sea temperature

The month with the coldest seawater is September, with an average sea temperature of 21.3°C (70.3°F).
Note: For most people, swimming in water at 21.3°C (70.3°F) is not a pleasurable experience. Breathing control gets harder as the water temperature descends from 21°C (69.8°F) to 15°C (59°F).

Daylight

In Ubatuba, the average length of the day in September is 11h and 58min.
On the first day of the month, sunrise is at 06:10 and sunset at 17:50. On the last day of September, sunrise is at 05:40 and sunset at 17:59 -03.

Sunshine

The month with the most sunshine is September, with an average of 8.1h of sunshine.

UV index

January through December, with an average maximum UV index of 5, are months with the highest UV index. The months with the lowest UV index are January through December, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: In September, a regular UV index of 5 translates into these guidelines:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Heads up! Sand and water reflection magnifies the UV exposure from the Sun.
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Frequently asked questions

What is the temperature in September in Ubatuba?

Ubatuba in September has an average high-temperature of 24°C (75.2°F) and an average low-temperature of 14.5°C (58.1°F).

What is the least humid month in Ubatuba?

The months with the lowest humidity are August and September, with an average relative humidity of 79%.

What is the average humidity in September in Ubatuba?

In Ubatuba, the average relative humidity in September is 79%.

How much does it rain in Ubatuba in September?

In Ubatuba, in September, it is raining for 15.7 days, with typically 51mm (2.01") of accumulated precipitation.

What month is the sea coldest in Ubatuba?

September is the month with the coldest seawater in Ubatuba, Brazil, with an average sea temperature of 21.3°C (70.3°F).

What is the sea water temperature in September in Ubatuba?

In September, the average sea temperature in Ubatuba, Brazil, is 21.3°C (70.3°F). For most, swimming in 21.3°C (70.3°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

What is the average length of the day in September in Ubatuba?

In Ubatuba, the average day length in September is 11h and 58min.

What time are sunrise and sunset in September in Ubatuba?

In September, on the first day of the month, sunrise is at 06:10 and sunset at 17:50. On the last day of the month, sunrise is at 05:40 and sunset at 17:59 -03.

What month has the most sunshine in Ubatuba?

September has the most sunshine of the year, with an average of 8.1h of sunshine.

How many hours of sunshine does Ubatuba have in September?

The average sunshine duration in September in Ubatuba, Brazil, is 8.1h.

When is the highest UV index in Ubatuba?

The months with the highest UV index in Ubatuba are January through December, with an average maximum UV index of 5.

What is the month with the lowest UV index in Ubatuba?

January through December, with an average maximum UV index of 5, are months with the lowest UV index in Ubatuba.

How high is the UV index in September in Ubatuba?

In September, the average daily maximum UV index in Ubatuba is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to the Sun's UV radiation.

Average temperature in September
Ubatuba, Brazil

Average temperature in September - Ubatuba, Brazil
  • Average high temperature in September: 24°C

The warmest month (with the highest average high temperature) is February (26.1°C).
The month with the lowest average high temperature is June (20.8°C).

  • Average low temperature in September: 14.5°C

The month with the highest average low temperature is January (18.3°C).
The coldest month (with the lowest average low temperature) is July (12.6°C).

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Average pressure in September
Ubatuba, Brazil

Average pressure in September - Ubatuba, Brazil
  • Average pressure in September: 1017.6mbar

The month with the highest atmospheric pressure is July (1020.4mbar).
The month with the lowest atmospheric pressure is December (1012.2mbar).

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Average wind speed in September
Ubatuba, Brazil

Average wind speed in September - Ubatuba, Brazil
  • Average wind speed in September: 7.7km/h

The windiest month (with the highest average wind speed) is September (7.7km/h).
The calmest month (with the lowest average wind speed) is February (6km/h).

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Average humidity in September
Ubatuba, Brazil

Average humidity in September - Ubatuba, Brazil
  • Average humidity in September: 79%

The months with the highest relative humidity are March and April (89%).
The months with the lowest relative humidity are August and September (79%).

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Average rainfall in September
Ubatuba, Brazil

Average rainfall in September - Ubatuba, Brazil
  • Average rainfall in September: 51mm

The wettest month (with the highest rainfall) is January (221mm).
The driest month (with the least rainfall) is June (27mm).

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Average rainfall days in September
Ubatuba, Brazil

Average rainfall days in September - Ubatuba, Brazil
  • Average rainfall days in September: 15.7 days

The month with the highest number of rainy days is December (28.9 days).
The month with the least rainy days is June (10.1 days).

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Average sea temperature in September
Ubatuba, Brazil

Average sea temperature in September - Ubatuba, Brazil
  • Average sea temperature in September: 21.3°C

The best month for swimming (with the highest average sea temperature) is March (26.5°C).
The coldest month (with the lowest average sea temperature) is September (21.3°C).

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Average daylight in September /
Average sunshine in September
Ubatuba, Brazil

Average daylight in September / Average sunshine in September - Ubatuba, Brazil
  • Average daylight in September: 12h and 0min

The month with the longest days is December (Average daylight: 13h and 36min).
The month with the shortest days is June (Average daylight: 10h and 42min).

  • Average sunshine in September: 8h and 1min

The month with the most sunshine is September (Average sunshine: 8h and 6min).
The month with the least sunshine is November (Average sunshine: 6h and 36min).

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Average sunshine days in September
Ubatuba, Brazil

Average sunshine days in September - Ubatuba, Brazil
  • Average sunshine days in September: 11.4 days

The month with the most sunshine days is July (18.4 days).
The month with the least sunshine days is December (1.1 days).

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Average UV index in September
Ubatuba, Brazil

Average UV index in September - Ubatuba, Brazil
  • Average UV index in September: 5

The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 5).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 5).

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Average cloud cover in September
Ubatuba, Brazil

Average cloud cover in September - Ubatuba, Brazil
  • Average cloud cover in September: 39

The month with the most cloud cover is November (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 34).

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Average visibility in September
Ubatuba, Brazil

Average visibility in September - Ubatuba, Brazil
  • Average visibility in September: 8km

The months with the highest visibility are February, June, July, August and September (8km).
The month with the lowest visibility is April (6km).

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Ubatuba, Brazil

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