September weather forecastLaguna, Brazil

September

Weather in September

September, the first month of the spring in Laguna, is still a pleasant month, with temperature in the range of an average high of 21°C (69.8°F) and an average low of 15.8°C (60.4°F).

Temperature

The initiation of September records an average high-temperature of a still agreeable 21°C (69.8°F), displaying a near consistency with the previous month. Laguna experiences an average low-temperature reading of 15.8°C (60.4°F) throughout September.

Humidity

The months with the highest humidity in Laguna are September and October, with an average relative humidity of 82%.

Rainfall

In Laguna, during September, the rain falls for 11.5 days and regularly aggregates up to 39mm (1.54") of precipitation. Throughout the year, in Laguna, there are 160.9 rainfall days, and 557mm (21.93") of precipitation is accumulated.

Sea temperature

In Laguna, Brazil, the average seawater temperature in September is 18.7°C (65.7°F).
Note: For most, swimming in 18.7°C (65.7°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).

Daylight

In September, the average length of the day in Laguna is 11h and 56min.
On the first day of September, sunrise is at 06:28 and sunset at 18:01. On the last day of the month, sunrise is at 05:54 and sunset at 18:15 -03.

Sunshine

The month with the least sunshine in Laguna is September, with an average of 7.2h of sunshine.

UV index

The months with the lowest UV index in Laguna are April through September and November, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum UV index of 5 in September translates into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Around midday, solar radiation is most harmful; hence, exposure should be limited. Employ a wide-brim hat for potent defense against up to 50% of UV rays.

Updated: Feb 2, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature, in September, in Laguna, records 21°C (69.8°F), while the low-temperature is 15.8°C (60.4°F). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in February is estimated at 31°C (87.8°F).

September and October, with an average relative humidity of 82%, are most humid months in Laguna, Brazil.

The average relative humidity in September in Laguna, Brazil, is 82%.

In Laguna, during September, the rain falls for 11.5 days and regularly aggregates up to 39mm (1.54") of precipitation.

In Laguna, in September, the average water temperature is 18.7°C (65.7°F). Swimming in 18.7°C (65.7°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

In September, the average day length in Laguna, Brazil, is 11h and 56min.

In September, on the first day of the month, sunrise is at 06:28 and sunset at 18:01. On the last day of the month, sunrise is at 05:54 and sunset at 18:15 -03.

The month with the least sunshine is September, with an average of 7.2h of sunshine.

In September, the average sunshine duration is 7.2h.

The months with the lowest UV index in Laguna are April through September and November, with an average maximum UV index of 5.

In September, the average daily maximum UV index in Laguna, Brazil, is 5. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

20.1°C

21°C

22.5°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

18.7km/h

17.7km/h

18.7km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

10.4

11.5

14.4

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

18.4

15.4

14.3

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Laguna, Brazil

Average high temperature in September: 21°C

The warmest month (with the highest average high temperature) is February (27.5°C).
The month with the lowest average high temperature is July (18.9°C).

Average low temperature in September: 15.8°C

The month with the highest average low temperature is February (22.2°C).
The coldest month (with the lowest average low temperature) is July (14.1°C).

Average pressure in September
Laguna, Brazil

Average pressure in September: 1017.7mbar

The month with the highest atmospheric pressure is July (1020.1mbar).
The month with the lowest atmospheric pressure is December (1012.1mbar).

Average wind speed in September
Laguna, Brazil

Average wind speed in September: 16.9km/h

The windiest month (with the highest average wind speed) is November (17.6km/h).
The calmest months (with the lowest average wind speed) are January and March (13.6km/h).

Average humidity in September
Laguna, Brazil

Average humidity in September: 82%

The months with the highest relative humidity are September and October (82%).
The months with the lowest relative humidity are April and November (79%).

Average rainfall in September
Laguna, Brazil

Average rainfall in September: 39mm

The wettest month (with the highest rainfall) is January (63mm).
The driest month (with the least rainfall) is November (32mm).

Average rainfall days in September
Laguna, Brazil

Average rainfall days in September: 11.5 days

The month with the highest number of rainy days is March (17.6 days).
The month with the least rainy days is June (10 days).

Average sea temperature in September
Laguna, Brazil

Average sea temperature in September: 18.7°C

The best months for swimming (with the highest average sea temperature) are January and February (25.7°C).
The coldest month (with the lowest average sea temperature) is August (18.2°C).

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

Average daylight in September: 11h and 54min

The month with the longest days is December (Average daylight: 13h and 54min).
The month with the shortest days is June (Average daylight: 10h and 24min).

Average sunshine in September: 7h and 12min

The month with the most sunshine is February (Average sunshine: 8h and 0min).
The month with the least sunshine is September (Average sunshine: 7h and 12min).

Average sunshine days in September
Laguna, Brazil

Average sunshine days in September: 15.4 days

The month with the most sunshine days is June (18.8 days).
The month with the least sunshine days is February (10.8 days).

Average UV index in September
Laguna, Brazil

Average UV index in September: 5

The month with the highest UV index is December (UV index 7).
The months with the lowest UV index are April, May, June, July, August, September and November (UV index 5).

Average cloud cover in September
Laguna, Brazil

Average cloud cover in September: 41

The month with the most cloud cover is October (Cloud cover 45).
The month with the least cloud cover is June (Cloud cover 34).

Average visibility in September
Laguna, Brazil

Average visibility in September: 10km

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